\n\n \n \n\n\n[DTN](https://www.dtn.com/) Marine Weather API is an all-in-one solution to integrate our marine weather data and analytics services into your systems. Utilising the latest cloud technology, we are able to tune our global suite of Metocean forecast models to match your needs. Models and forecast data are continuously validated, calibrated, and tuned to the latest observations, using satellite, buoy, and observation networks.\n\nUse DTN Marine Weather API to unlock a library of maritime weather data, integrating high-resolution models from global and regional forecast runs on the fly. As additional capabilities launch in the DTN Marine Weather API solution, you can access these features without changing workflow, approach or product by automatically onboarding new product features into your existing account.\n\nIntegrated weather data can help you reduce the impact of weather. Improved access to accurate weather data also means faster decisions and streamlined internal communications. We offer an advanced API portfolio for marine, shipping, and offshore sectors. Get the weather data you need into your systems\n\n# Marine Weather API\n\nMarine Weather API is a DTN product produced by DTN Utrecht and the Manta Team.\n\nThe API provides access to DTN [Marine Content Services](https://www.dtn.com/weather/shipping/marine-data-services/) portfolio of products.\n\n## Datasets\n\nThe datasets available include\n\n### Manta Models\n\nManta is DTN new marine proprietary forecast engine, which utilises the latest cloud technology to run a global suite of marine forecast models with the ability to integrate high resolution models into global and regional forecast runs. We continuously verify output from our weather models using satellite, buoy and observation networks.\n\n#### Manta Datasources\n\nManta dataset has an additional datasource property. You can specify different datasources when requesting information. The default used whenever the property is not specified is Global 6 minute resolution, our most comprehensive datasource. However for some specific use cases it may be better to use a specialized datasource. To know which datasources are available please contact your sales representative. Please note specialized datasources contain only certain parameters and cover only certain areas, therefore they should not be used unless your request has very specific requirements.\n\n#### Manta Parameters\n\nPlease note that the availability flag states which parameters are available(A) or not available(NA). In case the parameters you are looking for figure as not available(NA), please contact your sales representative to request more information.\n\n\n| parameter | description | units | category | Available as Hindcast Parameter |\n| ------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------- | --------------------- | ------------------------------ |\n| precipitation_probability | The probability of any precipitation at a given moment | 1 | precipitation | |\n| precipitation_amount_1h | The amount of precipitation in the past hour | mm | precipitation | |\n| precipitation_amount_3h | The amount of precipitation in the past 3 hours | mm | precipitation | |\n| precipitation_amount_6h | The amount of precipitation in the past 6 hours | mm | precipitation | |\n| air_pressure_mean_sea_level | - | Pa | pressure | ✓ |\n| relative_humidity_2m | - | 1 | humidity | |\n| significant_wave_height_risk_p90 | Total wave risk Upper limit of expected significant wave height, with 10% excess probability (90-percentile) | m | wave_windwave_swells | ✓ |\n| windwave_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | ✓ |\n| windwave_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| windwave_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | ✓ |\n| windwave_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | ✓ |\n| windwave_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| windwave_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| windwave_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | ✓ |\n| windwave_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | ✓ |\n| windwave_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| windwave_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| windwave_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| windwave_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| windwave_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| windwave_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| windwave_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| windwave_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| windwave_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| windwave_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_1_of_1_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | ✓ |\n| swell_1_of_1_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_1_of_1_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | ✓ |\n| swell_1_of_1_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | ✓ |\n| swell_1_of_1_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_1_of_1_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_1_of_1_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | ✓ |\n| swell_1_of_1_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | ✓ |\n| swell_1_of_1_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_1_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_1_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_1_of_1_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_1_of_1_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_1_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_1_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_1_of_1_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_1_of_1_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_1_of_1_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_1_of_2_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | |\n| swell_1_of_2_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_1_of_2_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_1_of_2_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_2_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_2_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_1_of_2_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_2_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_2_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_1_of_2_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_1_of_2_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_1_of_2_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_2_of_2_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | |\n| swell_2_of_2_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_2_of_2_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_2_of_2_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_2_of_2_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_2_of_2_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_2_of_2_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_2_of_2_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_2_of_2_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_2_of_2_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_2_of_2_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_2_of_2_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_1_of_3_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | |\n| swell_1_of_3_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_1_of_3_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_1_of_3_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_3_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_1_of_3_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_1_of_3_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_3_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_1_of_3_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_1_of_3_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_1_of_3_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_1_of_3_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_2_of_3_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | |\n| swell_2_of_3_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_2_of_3_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_2_of_3_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_2_of_3_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_2_of_3_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_2_of_3_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_2_of_3_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_2_of_3_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_2_of_3_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_2_of_3_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_2_of_3_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| swell_3_of_3_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_windwave_swells | |\n| swell_3_of_3_maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_windwave_swells | |\n| swell_3_of_3_peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_windwave_swells | |\n| swell_3_of_3_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_directional_spreading | Directional focus of waves | deg | wave_windwave_swells | |\n| swell_3_of_3_peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_windwave_swells | |\n| swell_3_of_3_peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_windwave_swells | |\n| swell_3_of_3_mean_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_3_of_3_maximum_wave_steepness | null | m m-1 | wave_windwave_swells | |\n| swell_3_of_3_negative_first_frequency_moment | null | m2 s | wave_windwave_swells | |\n| swell_3_of_3_zeroth_frequency_moment | null | m2 | wave_windwave_swells | |\n| swell_3_of_3_first_frequency_moment | null | m2 s-1 | wave_windwave_swells | |\n| swell_3_of_3_second_frequency_moment | null | m2 s-2 | wave_windwave_swells | |\n| negative_first_frequency_moment | null | m2 s | wave_spectral_moments | |\n| zeroth_frequency_moment | null | m2 | wave_spectral_moments | |\n| first_frequency_moment | null | m2 s-1 | wave_spectral_moments | |\n| second_frequency_moment | null | m2 s-2 | wave_spectral_moments | |\n| total_cloud_cover | - | 1 | cloud | |\n| cloud_base_height | - | m | cloud | |\n| visibility | The visibility is the distance at which something can be seen. | m | visibility | ✓ |\n| fog_probability | The probability of the visibility below 1000m | 1 | visibility | |\n| air_temperature_2m | - | K | temperature | |\n| air_temperature_10m | - | K | temperature | |\n| air_temperature_50m | - | K | temperature | |\n| air_temperature_100m | - | K | temperature | |\n| sea_temperature_0m | - | K | temperature | ✓ |\n| dew_point_temperature_2m | - | K | temperature | |\n| freezing_level | The altitude in which the temperature is at 0 °C in a free atmosphere | m above ground | temperature | |\n| wind_u_component_10m | - | ms-1 | wind | |\n| wind_v_component_10m | - | ms-1 | wind | |\n| wind_speed_10m | - | ms-1 | wind | ✓ |\n| wind_speed_30m | - | ms-1 | wind | |\n| wind_speed_50m | - | ms-1 | wind | |\n| wind_speed_80m | - | ms-1 | wind | |\n| wind_speed_110m | - | ms-1 | wind | |\n| wind_speed_100m | - | ms-1 | wind | ✓ |\n| wind_speed_gust_10m | - | ms-1 | wind | ✓ |\n| wind_speed_gust_30m | - | ms-1 | wind | |\n| wind_speed_gust_50m | - | ms-1 | wind | |\n| wind_speed_gust_100m | - | ms-1 | wind | |\n| wind_speed_10m_risk_p90 | Upper limit of expected 10m average wind speed, with 10% excess probability (90-percentile) | ms-1 | wind | |\n| wind_direction_10m | - | deg | wind | ✓ |\n| wind_direction_50m | - | deg | wind | |\n| wind_direction_100m | - | deg | wind | ✓ |\n| significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_total | ✓ |\n| maximum_wave_height | Mean of 1% highest waves or 1.67 * Hm0 according to deep water Rayleigh distribution | m | wave_total | ✓ |\n| mean_wave_period_tmm10 | Tmm10 is usally meant when Tm is not fully specified and is particularly sensitive to energy in the lower frequency range | s | wave_total | ✓ |\n| mean_wave_period_tm02 | Spectral approximation of the observed zero upcrossing wave period | s | wave_total | ✓ |\n| mean_wave_period_tm01 | Tm01 is another candidate when Tm is not fully specified | s | wave_total | |\n| peak_frequency | discrete or smoothed frequency of the group of waves with the highest energy | s-1 | wave_total | |\n| peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_total | ✓ |\n| mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_total | ✓ |\n| mean_wave_directional_spreading | Directional focus of waves | deg | wave_total | |\n| peak_wave_directional_spreading | Peak directional focus of waves | deg | wave_total | |\n| peak_wave_direction | Wave direction where dominant waves are arriving from | deg | wave_total | |\n| mean_wave_length | On deep water(>500m) the mean wave length can be computed as 1.56*Tmm10**2. Account for the dispersion relation on shallow water | m | wave_total | |\n| mean_wave_steepness | null | m m-1 | wave_total | |\n| maximum_wave_steepness | null | m m-1 | wave_total | |\n| negative_first_frequency_moment | null | m2 s | wave_total | |\n| zeroth_frequency_moment | null | m2 | wave_total | |\n| first_frequency_moment | null | m2 s-1 | wave_total | |\n| second_frequency_moment | null | m2 s-2 | wave_total | |\n| partition_1_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | ✓ |\n| partition_1_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | ✓ |\n| partition_1_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | ✓ |\n| partition_1_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| partition_2_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | |\n| partition_2_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | |\n| partition_2_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | |\n| partition_2_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| partition_3_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | |\n| partition_3_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | |\n| partition_3_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | |\n| partition_3_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| partition_4_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | |\n| partition_4_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | |\n| partition_4_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | |\n| partition_4_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| partition_5_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | |\n| partition_5_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | |\n| partition_5_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | |\n| partition_5_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| partition_6_of_6_significant_wave_height | Spectral approximation of the observed mean wave height of the largest 33% of the waves within a 20 minute window | m | wave_partitions | |\n| partition_6_of_6_peak_period | discrete or smoothed inverse frequency of the group of waves with the highest energy | s | wave_partitions | |\n| partition_6_of_6_mean_wave_direction | Mean direction where waves are arriving from. Mind the combination of multiple wavetrains | deg | wave_partitions | |\n| partition_6_of_6_mean_wave_directional_spreading | Directional focus of waves | deg | wave_partitions | |\n| geopotential_height_500hpa | Geopotential height at 500 hpa | hPa | atmospheric | |\n| northward_current | - | m s-1 | oceanographic | |\n| eastward_current | - | m s-1 | oceanographic | |\n| sea_surface_height | - | m | oceanographic | |\n| total_current_velocity | total current velocity from tidal and general ocean circulation | m.s-1 | - | ✓ |\n| total_current_to_direction | total current direction (oceanographic convention) from tidal and general ocean circulation | degrees | - | ✓ |\n\n### Nautical MeteoBase\n\nDTN Nautical MeteoBase [NMB] is the processor of Manta data. NMB is recognized as the most reliable system on the market and has formed the basis of all our products and services. The NMB technique uses a unique approach to blending global forecast models according to weighted algorithms with continuing verification. An optimized validated model mix is applied to improve forecast quality – where any inconsistences between the different wind and wave data sets are eliminated by harmonizing the data.\n\n#### NMB Parameters\n\n\n| parameter | description | unit |\n| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------ |\n| mwd1 | 1 st swell direction The direction the dominant or primary swell component is coming from, reference True North | deg |\n| swh1 | 1 st swell height Significant height of primary swell component | m |\n| mwp1 | 1 st swell Tm mean period Mean period of the primary swell component | s |\n| mwpp1 | 1 st swell Tp peak period Peak spectral period of the primary swell component | s |\n| mwd2 | 2 nd swell direction The direction the secondary component is coming from, reference True North | deg |\n| swh2 | 2 nd swell height Significant height of secondary swell component | m |\n| mwp2 | 2nd swell mean period Mean period of the secondary swell component | m |\n| mwpp2 | 2 nd swell Tp peak period Peak spectral period of the secondary well component | s |\n| tt10 | Air temperature at 10, 50, 100 m | C |\n| tt50 | Air temperature at 10, 50, 100 m | C |\n| tt100 | Air temperature at 10, 50, 100 m | C |\n| nlc | Cloudbase (Low cloud fraction) Height of lowest cloud base with cover > 25% | classes |\n| conf | Confidence Confidence level of the forecast in L (low), M (medium), H (high) | L, M, H dewpoint |\n| frzlev | Freezing level The altitude in which the temperature is at 0 °C (the freezing point of water) in a free atmosphere | ft |\n| p_th | Lightning probability (probability of thunder) | % and NIL, L, M, H ppp |\n| pvv | Probability of fog | % |\n| p_rrr | Probability of precipitation | % |\n| rh | Relative humidity at 10m (RH) | % |\n| ffrisk10x | Risk 10m wind speed Upper limit of expected 10m average wind speed, with 10% excess probability (90-percentile) | kt |\n| ttw | Sea surface temperature | C |\n| icing | Spray ice growth rate | enum(NIL, L, M, S, E) |\n| curr_dir | Surface current direction The mean direction the surface current is going to, reference True North; the current is a combination of global ocean current and tidal current | deg to |\n| curr_spd | Surface current speed The average surface current speed | kt |\n| ds | Swell direction The mean direction the swells are coming from, reference True North | deg |\n| hs | Swell height Significant swell height | m |\n| ps | Swell Tm mean period Mean swell period, defined as the square root of the ratio of the inverse and zero wave moments, TM0,-1 (also known as mean wave period based on inverse moment) | s |\n| tpswell | Swell Tp peak period Peak spectral period of the wind waves - period of wave with maximum wave energy, applied to wind wave spectrum | s |\n| p2sw | Swell Tz zero crossing period Mean zero crossing period of swell - average time interval between similar direction crossings of mean water level, applied to the swell spectrum. Also referred to as \"mean spectral period\" or \"mean wave period based on second moment\" | s |\n| ntot | Total cloud fraction (N) | Octa to % |\n| htw | Total wave height Significant total wave height (Hs) | m |\n| hmax_rayleigh | Total wave maximum height Rayleigh Largest expected single total wave height (equal to 1.86 multiplied by Hs) within 1000 wave cycles | m |\n| htwx | Total wave maximum height Largest expected single total wave height (equal to 1.667 multiplied by Hs), with 1% excess probability (99-percentile) | m |\n| mwd | Total wave mean direction The mean direction the wind waves are coming from, reference True North | deg |\n| htwrisk | Total wave risk Upper limit of expected significant wave height, with 10% excess probability (90-percentile) | m |\n| mwp | Total wave Tm mean period Mean wind wave period, defined as the square root of the ratio of the inverse and zero wave moments, TM0,-1 (also known as mean wave period based on inverse moment) | s |\n| tp | Total wave Tp peak period Peak spectral period of total waves - period of wave with maximum wave energy, applied to entire wave spectrum | s |\n| tz | Total wave Tz zero crossing period Mean zero crossing period of total waves - average time interval between similar direction crossings of mean water level, applied to the entire wave spectrum. Also referred to as \"mean spectral period\" or \"mean wave period based on second moment\" | s |\n| unc | Uncertainty code | enum |\n| vv | Visibility Horizontal visibility at 10m | classes |\n| ww | Weather type | text |\n| dd10 | Wind direction Mean direction the wind is blowing from) at 10, reference True North | deg |\n| dd50 | Wind direction Mean direction the wind is blowing from) at 50, reference True North | deg |\n| dd100 | Wind direction Mean direction the wind is blowing from) at 100m reference True North | deg |\n| ffg10 | Wind gusts Highest 3 seconds duration wind speed) at 10m | kt |\n| ffg50 | Wind gusts Highest 3 seconds duration wind speed) at 50m | kt |\n| ffg100 | Wind gusts Highest 3 seconds duration wind speed) at 100m | kt |\n| ff10 | Wind speed 10 minutes average wind speed at 10m | kt |\n| ff50 | Wind speed 10 minutes average wind speed at 50m | kt |\n| ff100 | Wind speed 10 minutes average wind speed at 100m | kt |\n| dw | Wind wave direction The mean direction the wind waves are coming from, reference True North | deg |\n| hw | Wind wave height Significant wind wave height | m |\n| pw | Wind wave Tm mean period Mean wind wave period, defined as the square root of the ratio of the inverse and zero wave moments, TM0,-1 (also known as mean wave period based on inverse moment) | s |\n| tpsea | Wind wave Tp peak period Peak spectral period of the wind waves - period of wave with maximum wave energy, applied to wind wave spectrum | s |\n| p2sea | Wind wave Tz zero crossing period Mean zero crossing period of swell - average time interval between similar direction crossings of mean water level, applied to the wind wave spectrum. Also referred to as \"mean spectral period\" or \"mean wave period based on second moment\" | s |\n\n### [Nautical](https://www.dtn.com/weather/shipping/spos)\n\nA lower resolution version of DTN NMB database, used for lower bandwidth requirements.\n\n#### Nautical Parameters\n\n\n| parameter | description | unit |\n| ------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- | ------ |\n| windSpeedInKnots | The speed of the wind at 10 meters above sea level (in knots), averaged over 10 minutes. | kt |\n| windDirectionInDegrees | The direction from which the wind is blowing at 10 meters above sea level (in degrees). | deg |\n| riskWindSpeedInKnots | Wind speed with a 10% exceedance probability (at 10 meters above sea level, in knots). | kt |\n| windGustInKnots | The highest speed of the wind at 10 meters above sea level during the given hour, averaged over 3 seconds (in knots). | kt |\n| windSpeedAt50MetersInKnots | Equivalent of windSpeedInKnots, but at 50 meters above sea level. | kt |\n| windDirectionAt50MetersInDegrees | Equivalent of windDirectionInDegrees, but at 50 meters above sea level. | deg |\n| windGustAt50MetersInKnots | Equivalent of windGustInKnots, but at 50 meters above sea level. | kt |\n| seaHeightInMeters | The significant height of the wind waves (in meters). | m |\n| seaPeriodInSeconds | The mean period of the wind waves (in seconds). | s |\n| swellDirectionInDegrees | The mean direction from which swell waves are coming (in degrees). | deg |\n| swellHeightInMeters | The significant height of swell waves (in meters). | m |\n| swellPeriodInSeconds | The mean period of swell waves (in seconds). | s |\n| totalWaveDirectionInDegrees | The mean direction from which all waves are coming (in degrees). | deg |\n| totalWaveHeightInMeters | The total significant wave height, i.e. of all waves (in meters). | m |\n| riskWaveHeightInMeters | The total significant wave height with a 10% exceedance probability (in meters). | m |\n| seaCurrentSpeedInKnots | The mean speed with which water is moving at sea surface level (in knots). | kt |\n| seaCurrentDirectionInDegrees | The mean direction into which water is moving at sea surface level (in degrees). | deg |\n| seaTemperatureInCelsius | The water temperature at sea or lake surface (in degrees Celsius). | Cel |\n| airTemperatureInCelsius | The air temperature at 2 meters height above surface level (in degrees Celsius). | Cel |\n| airPressureInHectoPascal | The air pressure reduced to mean sea level (in hectoPascal). | hPa |\n| heightOf500HectoPascalLevelInMeters | The height of the 500 hPa pressure level (in geopotential meters). | hPa |\n| precipitationProbabilityInPercent | The likelihood that precipitation will occur during the given hour (percentage) | % |\n| visibilityCode | Index of severity of visibility loss for a ship in this area. Possible values are: Good, Moderate/Good, Moderate, Poor/Moderate, Poor | text |\n| visibility | The textual description of the visibility code. | nm |\n| weatherCode | Index of the weather type in the area. Possible values are:Clear, Partly cloudy, Cloudy, Fog, Drizzle, Rain, Snow, Rain, Freezing rain | nmb |\n| weather | The textual description of the weather code. | nmb |\n| icingClass | Index of the severity of the growth of ice on a ship in this area. | text |\n| icing | The textual description of the Icing class. | text |\n\n## Layers Endpoint\n\nRaster data tile available as a web service for Data visualisation.\n\nAvailable layers include,\n\n\n| Layers | Technical name |\n| ----------------------------------------------------- | ------------------------------------------------------------------------------------------ |\n| Manta - Mean Sea level Pressure (every 2 hPa) | ISOLINE.mg-manta-production-output/air_pressure_mean_sea_level.default |\n| Manta -Mean Sea level Pressure (every 4 hPa) | ISOLINE.mg-manta-production-output/4_mb_air_pressure_mean_sea_level.default |\n| Manta -Visibility | VECTOR.mg-manta-production-output/dtn/manta/global/6min/visibility.default |\n| Manta -Visibility values | GRID.mg-manta-production-output/dtn/manta/global/6min/visibility.default |\n| Manta -Current speed | VECTOR.mg-manta-production-output/dtn/manta/global/6min/current_speed.default |\n| Manta -Current speed values | GRID.mg-manta-production-output/dtn/manta/global/7p5min/current_speed.default |\n| Manta -Current direction | WIND_SYMBOL.mg-manta-production-output/dtn/manta/global/7p5min/current_direction.default |\n| Manta -Mean Wave Direction | WIND_SYMBOL.mg-manta-production-output/dtn/manta/global/6min/mean_wave_direction.default |\n| Manta -Peak Wave period | VECTOR.mg-manta-production-output/dtn/manta/global/6min/peak_period.default |\n| Manta -Significant wave height | VECTOR.mg-manta-production-output/dtn/manta/global/6min/significant_wave_height.default |\n| Manta -Significant wave height values | GRID.mg-manta-production-output/dtn/manta/global/6min/significant_wave_height.default |\n| Manta -Wind speed | VECTOR.mg-manta-production-output/dtn/manta/global/6min/wind_speed_10m.default |\n| Manta -Wind speed values | GRID.mg-manta-production-output/dtn/manta/global/6min/wind_speed.default |\n| Manta -Wind direction | WIND_SYMBOL.mg-manta-production-output/dtn/manta/global/6min/wind_symbol.default |\n| Satellite - global infrared (GOES) | RASTER.obs-sat.mg.global-composite/data/ir.default |\n| Satellite - North America visible (GOES) | RASTER.obs-sat.noaa.goes-east-75w.sh.s3.mg/north_america/vis.default |\n| Satellite - North America infrared (GOES) | RASTER.obs-sat.noaa.goes-east-75w.sh.s3.mg/north_america/ir.default |\n| Satellite - Europe visible (MeteoSat) | RASTER.obs-sat.ems.meteosat-0e/europe/proj/hrv.default |\n| Satellite - Europe fog (MeteoSat) | RASTER.obs-sat.ems.meteosat-0e/europe/proj/eumetsat-rgb-composite-fog.default |\n| Satellite - Europe infrared (MeteoSat) | RASTER.obs-sat.ems.meteosat-0e/europe/proj/ir108.default |\n| Satellite - Europe water vapor (MeteoSat) | RASTER.obs-sat.ems.meteosat-0e/europe/proj/wv062.default |\n| Precipitation - NASA global precipitation intensity | VECTOR.obs-radar.nasa.global-imerg/01x01/intensity.default |\n\n# How it works?\n\nIt's a rest api, described with swagger and authenticated with [oauth](http://auth.weather.mg).\n\n# Overview\n\n- All users require DTN oauth clientid.\n- Swagger definition end point available\n- Dev json-ld support.\n\n## Authentication\n\nRequired auth token can be generated with client credentials via auth.weather.mg service.\n\n## Response Format\n\nThe service allows the default \"Accept\" header to specify which type of response is required.\nThe accepted values are:\n\n- application/json the response will be returned in JSON format\n- application/xml the response will be returned in xml format\n\nif no Accept header is specified, the default response format is application/json.\n\n## Rate limit\n\nThrottle presets based on client credentials.\n\n## Error Codes\n\n\n| Error Code Name | DTN Error Code | HTTP Status Code | ClientText |\n| ----------------------- | ---------------- | ------------------ | ------------------------------------------------------- |\n| ErrNotImplemented | MDS-NI | 202 | not implemented yet |\n| ErrInvalidBody | MDS-IB | 400 | invalid json provided |\n| ErrInvalidInput | MDS-II | 400 | no forecast_time added in parameter |\n| ErrInvalidInput | MDS-II | 400 | forecast_time' not validly parsed in query parameters |\n| ErrInvalidInput | MDS-II | 400 | no geo_shape added in parameter |\n| ErrInvalidInput | MDS-II | 400 | geo_shape' not validly parsed in query parameters |\n| ErrNotFound | MDS-404 | 404 | provided dataset was not found |\n| ErrForbidden | MDS-403 | 403 | access denied |\n| ErrBackendUnavailable | MDS-BU | 502 | Unable to retrieve NMB forecast |\n| ErrBackendUnavailable | MDS-BU | 502 | Unable to retrieve Nautical forecast |\n| ErrNoRID | MDS-NORID | 500 | |\n| ErrThrottled | MDS-TMR | 429 | Too many requests |\n| ErrGetRawPermissions | MDS-T-001 | 500 | |\n| ErrCastPermissions | MDS-T-002 | 500 | |\n| ErrDatabaseFail | MDS-T-003 | 500 | |\n\n# Get Started\n\n### 1. Acquire a client id.\n\nDTN customer support team will provide your unique client ID through email. Testing the client id can occur immediately:\n\n1. Start by accessing the Postman Collection in the top right of this web page.\n2. Edit the collection by selecting the three dots\n3. Click on Authorization\n4. Select the bearer token and add your client id.\n5. Request a token and click the update button.\n6. Your collection is now active, by using the first GET request at the api/forecast endpoint you will receive a valid response for authorized access.\n\n### 2. Choose a programming language\n\nFor programmatic access to the API we provide Postman API collection or alternatively you may choose from the developer examples shown below. The language you wish to use can be selected from a list of programming languages at the center top of the screen. See the Language dropdown menu: C#, Java, Python, etc.\n\n### 3. Authenticate your API request\n\nOur OAUTH 2.0 inspired authorization approach requires a Bearer token attached to all API requests based on your client id.\n\nBy using your client id and customer secret token send a simple REST post request, to DTN Auth Server, https://auth.weather.com\n\nREST example for oauth token request:\n\n```\nPOST https://auth.weather.mg/oauth/token\n\nRequest Headers\n\tContent-Type: application/x-www-form-urlencoded\n\tAuthorization: Basic <>\n\tUser-Agent: PostmanRuntime/7.24.1\n\tAccept: */*\n\tCache-Control: no-cache\n\tPostman-Token: c8053c0e-6944-4e95-9a9b-9f6b516936f4\n\tHost: auth.weather.mg\n\tAccept-Encoding: gzip, deflate, br\n\tConnection: keep-alive\n\tContent-Length: 36\nRequest Body\n\tgrant_type: \"client_credentials\"\n\tscope: \"\"\n```\n\nPython example for oauth token request:\n\n```python\nimport requests, json\nimport subprocess\nimport sys\n\n# python 3.6\n\n# DTN Authorization Server providing token.\ntoken_url = \"https://auth.weather.mg/oauth/token\"\n\n# DTN Marine Forecast API.\ntest_api_url = \"https://api.production.prd.marineds.zones.dtn.com/forecast\"\n\n# Customer (application) credentials\nclient_id = ''\nclient_secret = ''\n\n# Auth post request.\ndata = {'grant_type': 'client_credentials',\n 'scope': ''}\n\nprint(\"requesting access token\")\naccess_token_response = requests.post(token_url, data=data, verify=False, allow_redirects=False, auth=(client_id, client_secret))\n\n# Response received from auth server.\nprint(\"response\")\nprint(access_token_response.headers)\nprint('body: ' + access_token_response.text)\n\n# we can now use the access_token as much as we want to access protected resources.\ntokens = json.loads(access_token_response.text)\naccess_token = tokens['access_token']\nprint(\"access token: \" + access_token)\n\n# Testing authorised request from DTN server.\napi_call_headers = {'Authorization': 'Bearer ' + access_token}\napi_call_response = requests.get(test_api_url, headers=api_call_headers, verify=False)\n\nprint(api_call_response.text)\n```\n\nJAVA example for oauth token request:\n\n```java\nHttpClient client= new DefaultHttpClient();\n\nHttpPost requestAuth = new HttpPost(\"https://auth.weather.mg/oauth/token\");\n// add request headers\nrequestAuth.addHeader(\"Authorization\", \"Basic \");\nrequestAuth.setEntity(\"{'grant_type': 'client_credentials','scope': ''}\");\nclient.execute(requestAuth);\n\nHttpGet request = new HttpGet(\"https://api.production.prd.marineds.zones.dtn.com/forecast\");\n// add request headers\nrequest.addHeader(\"Authorization\", \"Bearer \");\nclient.execute(request);\n```\n\n### 4. Validate access to the forecast api.\n\nValidation endpoint is https://api.production.prd.marineds.zones.dtn.com/forecast. Auth token is required for this endpoint.\n\n### 5. Postman Usage\n\nDirect API access is available via the postman collection. Single click request examples are provided, including authentication, given that 4 enviromental variables are set.\n\n1. {{api_url}}\n2. {{client_id}}\n3. {{client_secret}}\n4. {{auth_server}}\n\n### 6. Release Notes\n\nv3.0 added new Manta parameters\n\nv2.1 We released support for Spectra and Spectra images requests\n\nv2.0 of the Marine Weather API, we released three key features: * Multiple poists: request forecasts for a line or a route or any form of multiple points within a single API request.\n\n* Area requests: request gridded data within an area bounded by Lat/Lon points. The response is a NetCDF file containing all the data.\n\n* Map layers: request map layer tiles that can be directly embedded within any mapping solutions like Mapbox or ArcGIS.\n\n### 7. 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