Product documentation

Product definition document:

PDD_SAPHIR-L2-RH_V1_R5.pdf (updated in January 2017)

Version history:

Version 2.00: Released November 2015. 1st version for SAPHIR-L2B-RH
Version 3.00: Released March 2017. Compared to the RH estimation scheme used in Version 2.00 which relied on Normal distributions, Version 3.00 product relies on a Beta distribution as its compact support and allowance for asymmetries about the mean are more favorable for describing the relative humidity. The estimation of parameters also provides a characterization of the retrieval uncertainty of RH for every observing pixel of SAPHIR

File description: SAPHIR-L2B-RH


Product file format: NetCDF3

Product datasets

Dataset DataType Dimensions units valid_range scale_factor add_offset _FillValue Missing_Output long_name
time float64 [time*] seconds since 2011-10-12 00:00:00.000 NONE 1.0 0.0 99999.0 NONE time
layer int32 [layer] NONE NONE 1.0 0.0 2147483647 NONE layer
latitude float32 [latitude] Degrees_north [-29.5, 29.5] 1.0 0.0 99999.0 NONE latitude
longitude float32 [longitude] Degrees_east [0.5, 359.5] 1.0 0.0 99999.0 NONE longitude
Pixel_time float64 [time*,
latitude,
longitude]
seconds since 2011-10-12 00:00:00.000 NONE 1.0 0.0 99999.0 NONE Pixel_time
RH float32 [time*,
layer,
latitude,
longitude]
% [0.0, 100.0] 1.0 0.0 99999.0 NONE RH
RH_Error_Standard_Deviation float32 [time*,
layer,
latitude,
longitude]
% [0.0, 100.0] 1.0 0.0 99999.0 NONE RH_Error_Standard_Deviation
RH_Quality float32 [time*,
layer,
latitude,
longitude]
% [0.0, 100.0] 1.0 0.0 99999.0 NONE RH_Quality

* : unlimited dimension



Product global attributes

Global attribute DataType Dimensions Value
File_Name string 1 MT1_L2B-RH-SAPSL1A2-1.07_2017-03-01T12-24-41_V3-00.nc
Product_Description string 1 Level-2B 1deg grid-wise.Relative Humidity Profile and its conditional error PDF: The relative humidity profile retrieval algorithm coupled with the estimated standard deviation parameter of a Gaussian function describing the conditional error PDF are used within the Megha-Tropiques framework and is called ARPIA. See more details in Sivira et al. (2014) and R. Sivira (PhD these, 2013) respectively.
North_Bounding_Latitude float64 1 30.0
South_Bounding_Latitude float64 1 -30.0
West_Bounding_Longitude float64 1 0.0
East_Bounding_Longitude float64 1 360.0
Nadir_Pixel_Size string 1 1.0 deg
Software_Version string 1 1.3.0
Product_Version string 1 V3-00
Production_Center string 1 ICARE
Production_Date string 1 2017/03/29 08:16:35
Sensors string 1 SAPHIR
Mission string 1 Megha-Tropiques
Input_Files string 1 MT1_L2-RH-SAPSL1A2-1.07_2017-03-01T12-24-41_V3-00.hdf
Level1_File string 1 MT1SAPSL1A2_1.07_000_1_18_I_2017_03_01_12_24_40_2017_03_01_14_17_57_27849_27851_288_11_13_BL3_00.h5
NETCDF_Version string 1 3
RAD_AuxFile_Version string 1 1_18
GEO_AuxFile_Version string 1 1_18
Level1_Version string 1 ISRO_SAC_DP-MT1-SAPL1A2SW-VER-1.07F000(ISRO_SAC_DP-MT1-SW_PROD_ID-111_11_L1A__111_11_L1A2-0008000)
Level2_Version string 1 3.0
Beginning_Acquisition_Date string 1 2017-03-01T12:24:41
End_Acquisition_Date string 1 2017-03-01T14:17:58
Product_Name string 1 MT1_L2B-RH-SAPSL1A2-1.07
Icare_ID string 1 2017-03-01T12:24:40

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