Product Documentation

POLDER/PARASOL monthly aerosol product over land - Level-3

The geophysical parameters shown in table given below are computed from the level-2 product for each superpixel (3x3 pixels) for a given month. These Level-3 parameters are non-directional.

Version history:

AC3 Version 10.11: Released September 2015
AC3-HDF5 Version 1.00: First release March 2016
AC3-HDF5 Version 1.01: Released September 2016

File description: POLDER3_M3-LGC


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_Fields
AI uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean aerosol index
AI_1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean aerosol index over decade no.1
AI_2 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean aerosol index over decade no.2
AI_3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean aerosol index over decade no.3
AI_max uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE maximun of aerosol index
AI_median uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE median of aerosol index
AI_min uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE minimum of aerosol index
AI_q1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE first quartile of aerosol index distribution
AI_q3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE third quartile of aerosol index distribution
AOT_865_fine uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness at 865nm
AOT_865_fine_1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness at 865nm over decade no.1
AOT_865_fine_2 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness at 865nm over decade no.2
AOT_865_fine_3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness at 865nm over decade no.3
AOT_865_fine_fixed_model uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness using fixed model
AOT_865_fine_fixed_model_1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness using fixed model over decade no.1
AOT_865_fine_fixed_model_2 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness using fixed model over decade no.2
AOT_865_fine_fixed_model_3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE mean fine mode aerosol optical thickness using fixed model over decade no.3
AOT_865_fine_fixed_model_max uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE maximun of aerosol optical thickness using fixed model
AOT_865_fine_fixed_model_median uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE median of fine mode aerosol optical thickness using fixed model
AOT_865_fine_fixed_model_min uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE minimum of fine mode aerosol optical thickness using fixed model
AOT_865_fine_fixed_model_q1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE first quartile of fine mode aerosol optical thickness using fixed model distribution
AOT_865_fine_fixed_model_q3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE third quartile of fine mode aerosol optical thickness using fixed model distribution
AOT_865_fine_max uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE maximun of fine mode aerosol optical thickness
AOT_865_fine_median uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE median of fine mode aerosol optical thickness
AOT_865_fine_min uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE minimum of fine mode aerosol optical thickness
AOT_865_fine_q1 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE first quartile of fine mode aerosol optical thickness distribution
AOT_865_fine_q3 uint16 [?,
?]		 no unit NONE 0.002 0.0 65535 NONE third quartile of fine mode aerosol optical thickness distribution
Angstrom_exponent_fine uint8 [?,
?]		 no unit NONE 0.014 0.0 255 NONE mean fine mode aerosol Angstrom exponent
Angstrom_exponent_fine_1 uint8 [?,
?]		 no unit NONE 0.014 0.0 255 NONE mean fine mode aerosol Angstrom exponent over decade no.1
Angstrom_exponent_fine_2 uint8 [?,
?]		 no unit NONE 0.014 0.0 255 NONE mean fine mode aerosol Angstrom exponent over decade no.2
Angstrom_exponent_fine_3 uint8 [?,
?]		 no unit NONE 0.014 0.0 255 NONE mean fine mode aerosol Angstrom exponent over decade no.3
Angstrom_exponent_fine_class1 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol Angstrom exponent class no.1: [0. - 2.15]
Angstrom_exponent_fine_class2 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol Angstrom exponent class no.2: ]2.15 - 2.5 ]
Angstrom_exponent_fine_class3 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol Angstrom exponent class no.3: ]2.5 - 2.85]
Angstrom_exponent_fine_class4 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol Angstrom exponent class no.4: ]2.85 - 3.2 ]
Nobs uint8 [?,
?]		 no unit NONE 1.0 0.0 255 NONE total number of valid observations
Nobs_1 uint8 [?,
?]		 no unit NONE 1.0 0.0 255 NONE number of valid observations over decade no.1
Nobs_2 uint8 [?,
?]		 no unit NONE 1.0 0.0 255 NONE number of valid observations over decade no.2
Nobs_3 uint8 [?,
?]		 no unit NONE 1.0 0.0 255 NONE number of valid observations over decade no.3
refractive_index_fine_class1 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol refractive index class no.1: [0. - 1.34]
refractive_index_fine_class2 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol refractive index class no.2: ]1.34 - 1.41]
refractive_index_fine_class3 uint8 [?,
?]		 no unit NONE 0.01 0.0 255 NONE occurence for fine mode aerosol refractive index class no.3: ]1.41 - 1.51]
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 Less than 4 valid observations during the month
Quality_Flags_02 uint8 [?,
?]		 no units NONE 1.0 0.0 255 NONE At least one decade with no observation
End of group : Quality_Flags_Fields



Product global attributes

Global attribute DataType Dimensions Value
Product_Description: Data Format and User Manual string 1 http://www.icare.univ-lille1.fr/projects_data/parasol/docs/POLDER-Parasol_Level-3_format.pdf
File_Name string 1 POLDER3_M3-LGC-100115M_2010-01_V1-01.h5
Geographic_Projection string 1 sinusoidal equal area projection (Sanson-Flamsted)
HDF_Version string 1 1.8.13
Nadir_Pixel_Size float64 1 18.5400009155
ICARE_ID string 1 2010-01-01T00:00:00
Product_Name string 1 LGC-100115M
Software_Version string 1 1.0.4
Product_Version string 1 V1-01
Production_Center string 1 ICARE
Production_Date string 1 2016/09/26 17:56:20
Sensors string 1 POLDER3
Input_Files string 1 P3L3TLGC100115ML; P3L3TLGC100115MD
North_Bounding_Latitude float64 1 56.5833320618
South_Bounding_Latitude float64 1 -54.75
West_Bounding_Longitude float64 1 -159.590408325
East_Bounding_Longitude float64 1 178.204223633
Reference_date_of_the_earliest_Level-2_product_potentially_used_for_the synthesis string 1 20100101000000
Satellite_identificator string 1 MYRIADE2
Pixel_size_of_the_reference_grid(km) string 1 018.540
Software_version_number string 1 070520
Level-3_processing_software_version string 1 070520
Identificator_of_each_level-2_product_used_as_input_of_level-3_processing string 1 116192M 116193M 116195M 116197M 116198M 116199M 116200M 116201M 116202M 116203M 116204M 116205M 116206M 116207M 116208M 116209M 116210M 116211M 116212M 116213M 116214M 116215M 116216M 116217M 116218M 116219M 116220M 116221M 116222M 116223M 116224M 116225M 116226M 116227M 116228M 116229M 116230M 116231M 116232M 116233M 117001M 117002M 117003M 117004M 117005M 117006M 117007M 117008M 117009M 117010M 117011M 117012M 117013M 117014M 117015M 117016M 117017M 117018M 117019M 117020M 117021M 117022M 117023M 117024M 117025M 117026M 117027M 117028M 117029M 117030M 117031M 117032M 117033M 117034M 117035M 117036M 117037M 117038M 117039M 117040M 117041M 117042M 117043M 117044M 117045M 117046M 117047M 117048M 117049M 117050M 117051M 117052M 117053M 117054M 117055M 117056M 117057M 117058M 117059M 117060M 117061M 117062M 117063M 117064M 117065M 117066M 117067M 117068M 117069M 117070M 117071M 117072M 117073M 117074M 117075M 117076M 117077M 117078M 117079M 117080M 117081M 117082M 117083M 117084M 117085M 117086M 117087M 117088M 117089M 117090M 117091M 117092M 117093M 117094M 117095M 117096M 117097M 117098M 117099M 117100M 117101M 117102M 117103M 117104M 117105M 117106M 117107M 117108M 117109M 117110M 117111M 117112M 117113M 117114M 117115M 117116M 117117M 117118M 117119M 117120M 117121M 117122M 117123M 117124M 117125M 117126M 117127M 117128M 117129M 117130M 117131M 117132M 117133M 117134M 117135M 117136M 117137M 117138M 117139M 117140M 117141M 117142M 117143M 117144M 117145M 117146M 117147M 117148M 117149M 117150M 117151M 117152M 117153M 117154M 117155M 117156M 117157M 117158M 117159M 117160M 117161M 117162M 117163M 117164M 117165M 117166M 117167M 117168M 117169M 117170M 117171M 117172M 117173M 117174M 117175M 117176M 117177M 117178M 117179M 117180M 117181M 117182M 117183M 117184M 117185M 117186M 117187M 117188M 117189M 117190M 117191M 117192M 117193M 117194M 117195M 117196M 117197M 117198M 117199M 117200M 117201M 117202M 117203M 117204M 117205M 117206M 117207M 117208M 117209M 117210M 117211M 117212M 117213M 117214M 117215M 117216M 117217M 117218M 117219M 117220M 117221M 117226M 117227M 117228M 117229M 117230M 117231M 117232M 117233M 118001M 118002M 118003M 118004M 118005M 118006M 118007M 118008M 118009M 118010M 118011M 118012M 118013M 118014M 118015M 118016M 118017M 118018M 118019M 118020M 118021M 118022M 118023M 118024M 118025M 118026M 118027M 118028M 118029M 118030M 118031M 118032M 118033M 118034M 118035M 118036M 118037M 118038M 118039M 118040M 118041M 118042M 118043M 118044M 118045M 118046M 118047M 118048M 118049M 118050M 118051M 118052M 118053M 118054M 118055M 118056M 118057M 118058M 118059M 118060M 118061M 118062M 118063M 118064M 118065M 118066M 118067M 118068M 118069M 118070M 118071M 118072M 118073M 118074M 118075M 118076M 118077M 118078M 118079M 118080M 118081M 118082M 118083M 118084M 118085M 118086M 118087M 118088M 118089M 118090M 118091M 118092M 118093M 118094M 118095M 118096M 118097M 118098M 118099M 118100M 118101M 118102M 118103M 118104M 118105M 118106M 118107M 118108M 118109M 118110M 118111M 118112M 118113M 118114M 118115M 118116M 118117M 118118M 118119M 118120M 118121M 118122M 118123M 118124M 118125M 118126M 118127M 118128M 118129M 118130M 118131M 118132M 118133M 118134M 118135M 118136M 118137M 118138M 118139M 118140M 118141M 118142M 118143M 118144M 118145M 118146M 118147M 118148M 118149M 118150M 118151M 118152M 118153M 118154M 118155M 118156M 118157M 118158M 118159M 118160M 118161M 118162M 118163M 118164M 118165M 118166M 118167M 118168M 118169M 118170M 118171M 118172M 118173M 118174M 118175M
Reference_date_of_the_latest_Level-2_product_potentially_used_for_the synthesis string 1 20100131235900

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