Product Documentation

Product definition document:

PDD_SCA_L2-FLUX_V1_R2.pdf (updated in March 2019)

Version history:

Version 1.00: Released October 2013. Original version
Version 2.00: Released January 2015. Minor correction of the albedo calculation. Minor format corrections.
Version 2.01: Released March 2019. 1. Relative Azimuth angle: The β angle, the angle between the direction of the Sun and the orbit plane varies from -45° to 45° for Megha-Tropiques platform. It is necessary to turn the satellite round (flip maneuver) so that the solar panels are more illuminated (see Handbook of Satellite orbits from Michel Capderou).
This flip maneuver is made when the sign of β changes , and the referential for calculating the azimuth angle too. We calculate the new relative azimuth angle to have the same convention of azimuth calculation: the Sun always have a relative azimuth angle of 180°.
2. Auxiliary Channels: The two auxiliary channels radiances (Infrared and visible) are added in the L2B files ( TOA_IR_Rad and TOA_VIS_Rad)

File description: MT1_L2-FLUX-SCASL1A2-1.06_2015-01-01T12-42-24_V2-00.hdf

Geolocation_Fields/Longitude_for_radiance_at_TOA dataset attributes

Dataset attribute	DataType	Dimensions	Value
units	string	1	Degrees
long_name	string	1	Longitude_for_radiance_at_TOA
HDF_Calibration_Equation	string	1	physical_value = scale_factor*(SDS_count - add_offset)
Missing_Output	uint16	1	65534
QA_SDS	string	1	N/A
actual_range	uint16	2	[4417, 29217]
Num_Fill	uint32	1	0
Num_Missing_Output	uint32	1	0
Num_Valid	uint32	1	38148
Physical_Range	float64	2	[0.0, 360.0]
Comments	string	1	Longitude of samples projected from top of atmosphere i.e the point where the sensor s optical axis intercepts the 20 km altitude earth envelop. 0 deg is Greewich meridian.
valid_range	uint16	2	[0, 36000]
_FillValue	uint16	1	65535
scale_factor	float64	1	0.01
scale_factor_err	float64	1	0.0
add_offset	float64	1	0.0
add_offset_err	float64	1	0.0
calibrated_nt	int32	1	23