ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles, Version 7
Data set id:
ATL04
DOI: 10.5067/ATLAS/ATL04.007
This is the most recent version of these data.
Version Summary
Version Summary
- Addition of a new L3A cloud folding algorithm to better detect and flag instances when clouds above 15 km are folded down to the lower few km of the profile
- Detection and flagging of layers that are wholly below ground and thus folded
- Detection and flagging of folded layers that straddle ground
- Setting the layer_attr parameter to a value of 11 when a layer is determined to be folded from above 15 km
- Changes to the structure of the layer detection algorithm (DDA) to enable execution of N passes of the DDA
- Improved thin layer detection
- Detection and flagging of layers that are wholly below ground and thus folded
- Detection and flagging of folded layers that straddle ground
- Setting the layer_attr parameter to a value of 11 when a layer is determined to be folded from above 15 km
- Changes to the structure of the layer detection algorithm (DDA) to enable execution of N passes of the DDA
- Improved thin layer detection
Overview
ATL04 contains along-track normalized relative backscatter (NRB) profiles of the atmosphere. The product includes full 532 nm (14 km tall) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Calibration coefficient values derived from data between 13.5 and 11 km above the surface are also included. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the ICESat-2 observatory.
Parameter(s):
LIDAR BACKSCATTER
Platform(s):
ICESat-2
Sensor(s):
ATLAS
Data Format(s):
HDF5
Temporal Coverage:
- 13 October 2018 to present
Temporal Resolution:
- 91 day
Spatial Resolution:
- Not Specified
Spatial Reference System(s):
- WGS 84EPSG:4326
Spatial Coverage:
- N:88S:-88E:180W:-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
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