POLDER/PARASOL Earth Radiation Budget, Water Vapor and Cloud Parameters - Level-2
The geophysical parameters shown in table given below are computed from the level-1 product for each superpixel (3x3 pixels), by orbit segment. These Level-2 parameters are non-directional.Version history:
RB2 Version 19.20: Released September 2015RB2 Version 21.22: Released September 2016
RB2-HDF5 Version 1.00: First release March 2016
RB2-HDF5 Version 1.01: Released September 2016
File description: POLDER3_L2B-RGB
Product file format: HDF5
Product datasets
Dataset | DataType | Dimensions | units | valid_range | scale_factor | add_offset | _FillValue | Missing_Output | long_name |
Beginning of group : Data_Directional_Fields | |||||||||
Nclear_directional | uint8 | [?, ?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of clear-sky pixels (15: no observation) |
Ncloudy_directional | uint8 | [?, ?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of cloudy pixels (15: no observation) |
albedo_SW_directional | uint16 | [?, ?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | shortwave broadband albedo retrieved from visible narrowband directional albedo |
albedo_VIS_directional | uint16 | [?, ?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | visible narrowband albedo (670 nm: land /865 nm: sea) |
cloud_fraction_directional | uint8 | [?, ?, ?] |
no unit | NONE | 0.005 | 0.0 | 255 | NONE | cloud fraction |
cloud_spherical_albedo_VIS_directional | uint8 | [?, ?, ?] |
no unit | NONE | 0.004 | 0.0 | 255 | NONE | cloud spherical visible narrowband albedo (670 nm: land /865 nm: sea) |
corrected_polarized_radiance_865_directional | uint8 | [?, ?, ?] |
no unit | NONE | 0.0008 | -0.05 | 255 | NONE | corrected polarized radiance at 865 nm (geometric multiplying factor: 1+cos(thetav)/cos(thetas)) |
phi | uint8 | [?, ?, ?] |
degrees | NONE | 1.5 | -180.0 | 255 | NONE | relative azimuth angle (defined for the central pixel) |
reflectance_SW_directional | uint16 | [?, ?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | shortwave broadband reflectance retrieved from visible narrowband reflectance |
reflectance_VIS_directional | uint16 | [?, ?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | visible narrowband reflectance corrected for gaseous absorption (670 nm: land /865 nm: sea) |
thetav | uint8 | [?, ?, ?] |
degrees | NONE | 0.5 | 0.0 | 255 | NONE | view zenith angle (defined for the central pixel) |
End of group : Data_Directional_Fields | |||||||||
Beginning of group : Data_Fields | |||||||||
AOT_strato | uint8 | [?, ?] |
no unit | NONE | 0.001 | 0.0 | 255 | NONE | stratospheric aerosol optical thickness (exogeneous data) |
Ndir_Rayleigh | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of directions used for Rayleigh pressure retrieval [0-15] |
No_first_dir_glint | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | first direction potentially within sunglint [0-15] |
No_last_dir_glint | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | last direction within sunglint [0-15] |
Npixels | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of valid pixels in the 3x3 superpixel [0-11] |
Nreclassified_to_clear | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of pixels reclassified from indeterminate to clear-sky in the 3x3 superpixel |
Nreclassified_to_cloudy | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | number of pixels reclassified from indeterminate to cloudy in the 3x3 superpixel |
Nviews | uint8 | [?, ?] |
no unit | NONE | 1.0 | 0.0 | 255 | NONE | number of available view directions [1-16] |
albedo_SW | uint16 | [?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | shortwave broadband albedo derived from the 443, 670, 865 nm albedos |
albedo_SW_clear_sky_model | uint8 | [?, ?] |
no unit | NONE | 0.004 | 0.0 | 255 | NONE | modeled clear-sky shortwave broadband albedo (independant from POLDER measurements) |
albedo_VIS | uint16 | [?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | visible narrowband albedo (670 nm: land /865 nm: sea) |
albedo_VIS_clear_sky_model | uint8 | [?, ?] |
no unit | NONE | 0.004 | 0.0 | 255 | NONE | modeled clear-sky visible narrowband albedo (670 nm: land /865 nm: sea; independant of POLDER measurements) |
albedo_VIS_quality_index | uint8 | [?, ?] |
no unit | NONE | 0.004 | 0.0 | 255 | NONE | visible narrowband albedo quality index |
albedo_VIS_scene | uint16 | [?, ?] |
no unit | NONE | 0.0001 | 0.0 | 65535 | NONE | visible narrowband albedo retrieved under homogeneous scene assumption (670 nm: land /865 nm: sea) |
albedo_VIS_scene_std_dev_angular | uint8 | [?, ?] |
percent | NONE | 0.2 | 0.0 | 255 | NONE | relative angular standard deviation of visible narrowband albedo retrieved under homogeneous scene assumption |
albedo_VIS_std_dev_angular | uint8 | [?, ?] |
percent | NONE | 0.2 | 0.0 | 255 | NONE | relative angular standard deviation of the visible narrowband albedo retrieved for each pixel and each direction (670 nm: land /865 nm: sea) |
albedo_VIS_std_dev_spatial | uint8 | [?, ?] |
percent | NONE | 0.2 | 0.0 | 255 | NONE | relative spatial standard deviation of the visible narrowband albedo retrieved for each pixel and each direction (670 nm: land /865 nm: sea) |
cloud_Rayleigh_pressure | uint8 | [?, ?] |
hPa | NONE | 5.0 | 0.0 | 255 | NONE | cloud Rayleigh pressure (expected to be close of the cloud top pressure) |
cloud_Rayleigh_pressure_std_dev_angular | uint8 | [?, ?] |
hPa | NONE | 2.5 | 0.0 | 255 | NONE | angular standard deviation of the cloud Rayleigh pressure retrieved for each direction |
cloud_fraction | uint8 | [?, ?] |
no unit | NONE | 0.005 | 0.0 | 255 | NONE | cloud fraction (number of cloudy pixels divided by the total number of pixels) |
cloud_fraction_quality_index | uint8 | [?, ?] |
no unit | NONE | 0.01 | 0.0 | 255 | NONE | quality index for cloud detection |
cloud_geometrical_thickness | uint16 | [?, ?] |
m | NONE | 1.0 | 0.0 | 65535 | NONE | cloud geometrical thickness estimated from cloud top oxygen pressure and cloud middle oxygen pressure |
cloud_geometrical_thickness_std_dev_angular | uint16 | [?, ?] |
m | NONE | 1.0 | 0.0 | 65535 | NONE | cloud geometrical thickness estimated from angular standard deviation of the cloud oxygen pressure (only on liquid clouds) |
cloud_multi_layer_flag | uint8 | [?, ?] |
percent | NONE | 1.0 | 0.0 | 255 | NONE | cloud multi-layer flag |
cloud_optical_thickness | uint16 | [?, ?] |
no unit | NONE | 0.01 | 0.0 | 65535 | NONE | cloud optical thickness (670 nm: land /865 nm: sea) |
cloud_optical_thickness_std_dev_spatial | uint8 | [?, ?] |
percent | NONE | 0.4 | 0.0 | 255 | NONE | relative spatial standard deviation of the cloud optical thickness retrieved for each pixel |
cloud_optical_thickness_variability | uint8 | [?, ?] |
no unit | NONE | 0.01 | 0.0 | 255 | NONE | variability of the cloud optical thickness distribution |
cloud_oxygen_pressure | uint8 | [?, ?] |
hPa | NONE | 5.0 | 0.0 | 255 | NONE | cloud oxygen pressure relie on radiances at 763 and 765 nm (expected to be close of the cloud middle pressure) |
cloud_oxygen_pressure_middle | uint16 | [?, ?] |
hPa | NONE | 1.0 | 0.0 | 65535 | NONE | cloud middle pressure estimated from cloud oxygen pressure and cloud optical thickness |
cloud_oxygen_pressure_std_dev_angular | uint8 | [?, ?] |
hPa | NONE | 2.5 | 0.0 | 255 | NONE | angular standard deviation of the cloud oxygen pressure retrieved for each direction |
cloud_oxygen_pressure_top | uint16 | [?, ?] |
hPa | NONE | 1.0 | 0.0 | 65535 | NONE | cloud top pressure estimated from cloud oxygen pressure, angular standard deviation of the cloud oxygen pressure and cloud optical thickness |
cloud_phase | uint8 | [?, ?] |
no unit | NONE | 1.0 | 0.0 | 255 | NONE | cloud thermodynamic phase (0-99: liquid clouds (0-19: high confidence liquid); 100-199: ice clouds (100-119: high confidence ice); 200-229 mixed phase clouds (200-215: high confidence mixed); 230-239: uncertain (no decision made); (230-235: high confidence); 240: clear sky; 255: no observation) |
cloud_spherical_albedo_VIS | uint8 | [?, ?] |
no unit | NONE | 0.004 | 0.0 | 255 | NONE | cloud spherical visible narrowband albedo (670 nm: land /865 nm: sea) |
mus | uint8 | [?, ?] |
no unit | NONE | 0.004 | 0.2 | 255 | NONE | cosine of solar zenith angle (defined for the central pixel) |
ozone_total_column | uint8 | [?, ?] |
cm atm | NONE | 0.002 | 0.1 | 255 | NONE | total column ozone (exogeneous data) |
surface_pressure | uint8 | [?, ?] |
hPa | NONE | 4.0 | 100.0 | 255 | NONE | meteorological surface pressure (exogeneous data) |
surface_wind_direction | uint8 | [?, ?] |
degrees | NONE | 1.5 | 0.0 | 255 | NONE | meteorological surface wind direction (exogenous data) |
surface_wind_speed | uint8 | [?, ?] |
m/s | NONE | 0.5 | 0.0 | 255 | NONE | meteorological surface wind speed (exogeneous data) |
temperature_1000hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 1000hPa (exogeneous data) |
temperature_150hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 150hPa (exogeneous data) |
temperature_200hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 200hPa (exogeneous data) |
temperature_250hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 250hPa (exogeneous data) |
temperature_300hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 300hPa (exogeneous data) |
temperature_400hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 400hPa (exogeneous data) |
temperature_500hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 500hPa (exogeneous data) |
temperature_700hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 700hPa (exogeneous data) |
temperature_850hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 850hPa (exogeneous data) |
temperature_925hPa | uint8 | [?, ?] |
K | NONE | 1.0 | 150.0 | 255 | NONE | temperature at 925hPa (exogeneous data) |
utc_hour | uint8 | [?, ?] |
hour | NONE | 1.0 | 0.0 | 255 | NONE | utc hour for central pixel [0-23] |
utc_minute | uint8 | [?, ?] |
minute | NONE | 1.0 | 0.0 | 255 | NONE | utc minute for central pixel [0-59] |
water_vapor_1000hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 1000hPa (exogeneous data) |
water_vapor_150hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 150hPa (exogeneous data) |
water_vapor_200hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 200hPa (exogeneous data) |
water_vapor_250hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 250hPa (exogeneous data) |
water_vapor_300hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 300hPa (exogeneous data) |
water_vapor_400hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 400hPa (exogeneous data) |
water_vapor_500hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 500hPa (exogeneous data) |
water_vapor_700hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 700hPa (exogeneous data) |
water_vapor_850hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 850hPa (exogeneous data) |
water_vapor_925hPa | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | water vapor at 925hPa (exogeneous data) |
water_vapor_column | uint8 | [?, ?] |
g/cm2 | NONE | 0.03 | 0.0 | 255 | NONE | total column precipitable water vapor (clear-sky pixel only) |
water_vapor_column_std_dev_spatial | uint8 | [?, ?] |
g/cm2 | NONE | 0.01 | 0.0 | 255 | NONE | spatial standard deviation of water vapor retrieved for each pixel |
End of group : Data_Fields | |||||||||
Beginning of group : Geolocation_Fields | |||||||||
Latitude | float64 | [?, ?] |
degrees | NONE | 1.0 | 0.0 | -99999.0 | NONE | pixel center latitude |
Longitude | float64 | [?, ?] |
degrees | NONE | 1.0 | 0.0 | -99999.0 | NONE | pixel center longitude |
column_number | uint16 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 65535 | NONE | column number of the pixel in the POLDER grid [1-2160] |
land_sea_flag | uint8 | [?, ?] |
percent | NONE | 1.0 | 0.0 | 255 | NONE | land sea flag (0:sea, 100:land, 50:mixed) |
row_number | uint16 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 65535 | NONE | row number of the pixel in the POLDER grid [1-1080] |
surface_altitude | int16 | [?, ?] |
meters | NONE | 1.0 | 0.0 | 32767 | NONE | pixel center surface altitude |
End of group : Geolocation_Fields | |||||||||
Beginning of group : Quality_Flags_Fields | |||||||||
Quality_Flags_01 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid water vapor |
Quality_Flags_02 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid cloud pressure |
Quality_Flags_03 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid Rayleigh cloud pressure |
Quality_Flags_04 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Liquid cloud |
Quality_Flags_05 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Ice cloud |
Quality_Flags_06 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Mixed-phase cloud |
Quality_Flags_07 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid cloud optical thickness |
Quality_Flags_08 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Possibility for snow or ice on ground in 3x3 superpixel |
Quality_Flags_09 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | No sunglint |
Quality_Flags_10 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Clear pixel |
Quality_Flags_11 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Cloudy pixel |
Quality_Flags_12 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | good temporal coincidence of input surface reflectance |
Quality_Flags_13 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | good spatial homogeneity of input surface reflectance |
Quality_Flags_14 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid visble narrowband albedo |
Quality_Flags_15 | uint8 | [?, ?] |
no units | NONE | 1.0 | 0.0 | 255 | NONE | Valid shortwave broadband albedo |
End of group : Quality_Flags_Fields |
Product global attributes
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