Dataset: Global Ocean - Wind - METOP-B ASCAT - 25km daily Ascending V2#
Dataset identifier: KNMI-GLO-WIND_L3-REP-OBS_METOP-B_ASCAT_25_ASC
Data store: cmems
How to open this dataset in AVL JupyterLab
cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('KNMI-GLO-WIND_L3-REP-OBS_METOP-B_ASCAT_25_ASC')
Basic information#
cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('KNMI-GLO-WIND_L3-REP-OBS_METOP-B_ASCAT_25_ASC')
| Parameter | Value |
|---|---|
| Bounding box longitude (°) | 0 to 360 |
| Bounding box latitude (°) | -90 to 90 |
| Time range | 2019-01-01 to 2022-12-31 |
| Time period | 1D |
Click here for full dataset metadata.
Variable list#
Click on a variable name to jump to the variable’s full metadata.
| Variable | Long name | Units |
|---|---|---|
| air_density | air density at 10 m | kg m-3 |
| bs_distance | backscatter distance | 1 |
| eastward_model_stress | model stress u component | N m-2 |
| eastward_stress | wind stress u component | N m-2 |
| eastward_wind | stress equivalent wind u component at 10 m | m s-1 |
| measurement_time | measurement acquisition time | [none] |
| model_stress_curl | model rotation of ocean surface stress | N m-3 |
| model_stress_divergence | model divergence of ocean surface stress | N m-3 |
| model_stress_magnitude | model stress | N m-2 |
| model_wind_to_dir | model wind direction at 10 m | degree |
| northward_model_stress | model stress v component | N m-2 |
| northward_stress | wind stress v component | N m-2 |
| northward_wind | stress equivalent wind v component at 10 m | m s-1 |
| se_eastward_model_wind | stress equivalent model wind u component at 10 m | m s-1 |
| se_model_speed | stress equivalent model wind speed at 10 m | m s-1 |
| se_model_wind_curl | model rotation of stress equivalent wind at 10 m | s-1 |
| se_model_wind_divergence | model divergence of stress equivalent wind at 10 m | s-1 |
| se_northward_model_wind | stress equivalent model wind v component at 10 m | m s-1 |
| stress_curl | rotation of ocean surface stress | N m-3 |
| stress_divergence | divergence of ocean surface stress | N m-3 |
| wind_curl | rotation of stress equivalent wind at 10 m | s-1 |
| wind_divergence | divergence of stress equivalent wind at 10 m | s-1 |
| wind_speed | stress equivalent wind speed at 10 m | m s-1 |
| wind_stress_magnitude | wind stress | N m-2 |
| wind_to_dir | wind direction at 10 m | degree |
| wvc_index | cross track wind vector cell number | 1 |
| wvc_quality_flag | wind vector cell quality | [none] |
Full variable metadata#
air_density#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 2000 |
| standard_name | air_density |
| long_name | air density at 10 m |
| units | kg m-3 |
| air_density_source | ECMWF (ERA5) |
bs_distance#
| Field | Value |
|---|---|
| valid_min | -500 |
| valid_max | 500 |
| standard_name | backscatter_distance_to_modelfunction |
| long_name | backscatter distance |
| units | 1 |
eastward_model_stress#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | surface_downward_eastward_stress |
| long_name | model stress u component |
| units | N m-2 |
| background_wind_source | ECMWF (ERA5) |
eastward_stress#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | surface_downward_eastward_stress |
| long_name | wind stress u component |
| units | N m-2 |
eastward_wind#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | eastward_wind |
| long_name | stress equivalent wind u component at 10 m |
| units | m s-1 |
measurement_time#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 2147483647 |
| standard_name | time |
| long_name | measurement acquisition time |
model_stress_curl#
| Field | Value |
|---|---|
| valid_min | -500000000 |
| valid_max | 500000000 |
| standard_name | vertical_component_of_surface_downward_stress_curl |
| long_name | model rotation of ocean surface stress |
| units | N m-3 |
| background_wind_source | ECMWF (ERA5) |
model_stress_divergence#
| Field | Value |
|---|---|
| valid_min | -500000000 |
| valid_max | 500000000 |
| standard_name | divergence_of_surface_downward_stress |
| long_name | model divergence of ocean surface stress |
| units | N m-3 |
| background_wind_source | ECMWF (ERA5) |
model_stress_magnitude#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 5000 |
| standard_name | magnitude_of_surface_downward_stress |
| long_name | model stress |
| units | N m-2 |
| background_wind_source | ECMWF (ERA5) |
model_wind_to_dir#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 3600 |
| standard_name | wind_to_direction |
| long_name | model wind direction at 10 m |
| units | degree |
| background_wind_source | ECMWF (ERA5) |
northward_model_stress#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | surface_downward_northward_stress |
| long_name | model stress v component |
| units | N m-2 |
| background_wind_source | ECMWF (ERA5) |
northward_stress#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | surface_downward_northward_stress |
| long_name | wind stress v component |
| units | N m-2 |
northward_wind#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | northward_wind |
| long_name | stress equivalent wind v component at 10 m |
| units | m s-1 |
se_eastward_model_wind#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | eastward_wind |
| long_name | stress equivalent model wind u component at 10 m |
| units | m s-1 |
| background_wind_source | ECMWF (ERA5) |
se_model_speed#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 5000 |
| standard_name | wind_speed |
| long_name | stress equivalent model wind speed at 10 m |
| units | m s-1 |
| background_wind_source | ECMWF (ERA5) |
se_model_wind_curl#
| Field | Value |
|---|---|
| valid_min | -500000 |
| valid_max | 500000 |
| standard_name | atmosphere_relative_vorticity |
| long_name | model rotation of stress equivalent wind at 10 m |
| units | s-1 |
| background_wind_source | ECMWF (ERA5) |
se_model_wind_divergence#
| Field | Value |
|---|---|
| valid_min | -500000 |
| valid_max | 500000 |
| standard_name | divergence_of_wind |
| long_name | model divergence of stress equivalent wind at 10 m |
| units | s-1 |
| background_wind_source | ECMWF (ERA5) |
se_northward_model_wind#
| Field | Value |
|---|---|
| valid_min | -5000 |
| valid_max | 5000 |
| standard_name | northward_wind |
| long_name | stress equivalent model wind v component at 10 m |
| units | m s-1 |
| background_wind_source | ECMWF (ERA5) |
stress_curl#
| Field | Value |
|---|---|
| valid_min | -500000000 |
| valid_max | 500000000 |
| standard_name | vertical_component_of_surface_downward_stress_curl |
| long_name | rotation of ocean surface stress |
| units | N m-3 |
stress_divergence#
| Field | Value |
|---|---|
| valid_min | -500000000 |
| valid_max | 500000000 |
| standard_name | divergence_of_surface_downward_stress |
| long_name | divergence of ocean surface stress |
| units | N m-3 |
wind_curl#
| Field | Value |
|---|---|
| valid_min | -500000 |
| valid_max | 500000 |
| standard_name | atmosphere_relative_vorticity |
| long_name | rotation of stress equivalent wind at 10 m |
| units | s-1 |
wind_divergence#
| Field | Value |
|---|---|
| valid_min | -500000 |
| valid_max | 500000 |
| standard_name | divergence_of_wind |
| long_name | divergence of stress equivalent wind at 10 m |
| units | s-1 |
wind_speed#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 5000 |
| standard_name | wind_speed |
| long_name | stress equivalent wind speed at 10 m |
| units | m s-1 |
wind_stress_magnitude#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 5000 |
| standard_name | magnitude_of_surface_downward_stress |
| long_name | wind stress |
| units | N m-2 |
wind_to_dir#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 3600 |
| standard_name | wind_to_direction |
| long_name | wind direction at 10 m |
| units | degree |
wvc_index#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 999 |
| standard_name | across_swath_cell_index |
| long_name | cross track wind vector cell number |
| units | 1 |
wvc_quality_flag#
| Field | Value |
|---|---|
| valid_min | 0 |
| valid_max | 8388607 |
| standard_name | status_flag |
| long_name | wind vector cell quality |
| flag_masks | 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304 |
| flag_meanings | distance_to_gmf_too_large data_are_redundant no_meteorological_background_used rain_detected not_usable_for_visualisation small_wind_less_than_or_equal_to_3_m_s large_wind_greater_than_30_m_s wind_inversion_not_successful some_portion_of_wvc_is_over_ice some_portion_of_wvc_is_over_land variational_quality_control_fails knmi_quality_control_fails product_monitoring_event_flag product_monitoring_not_used any_beam_noise_content_above_threshold poor_azimuth_diversity not_enough_good_sigma0_for_wind_retrieval |
Full dataset metadata#
| Field | Value |
|---|---|
| title | Global Ocean - Wind - METOP-B ASCAT - 25km daily Ascending V2 |
| title_short_name | ASCATB-L3-25km |
| Conventions | CF-1.6 |
| institution | EUMETSAT/OSI SAF/KNMI |
| source | MetOp-B ASCAT |
| software_identification_level_1 | 1103 |
| instrument_calibration_version | 0 |
| software_identification_wind | 3301 |
| pixel_size_on_horizontal | 25.0 km |
| service_type | N/A |
| processing_type | O |
| contents | ovw |
| granule_name | GLO-WIND_L3-OBS_METOP-B_ASCAT_25_ASC_20221231.nc |
| processing_level | L3 |
| orbit_number | 53352 |
| start_date | 2022-12-31 |
| start_time | 00:00:00 |
| stop_date | 2022-12-31 |
| stop_time | 23:59:56 |
| equator_crossing_longitude | 323.223 |
| equator_crossing_date | 2022-12-30 |
| equator_crossing_time | 23:57:34 |
| rev_orbit_period | 6081.7 |
| orbit_inclination | 98.7 |
| history | N/A |
| references | ASCAT Wind Product User Manual, https://osi-saf.eumetsat.int/, https://scatterometer.knmi.nl/ |
| comment | Orbit period and inclination are constant values. All wind directions in oceanographic convention (0 deg. flowing North) |
| creation_date | 2023-04-14 |
| creation_time | 04:15:40 |