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#

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