Spatio-temporal Characterisation of Observed SCATSAT-1 Radar Cross Section on the Snow and Ice Surface of Greenland

Greenland ice sheet has the potential to exert a notable impact on the rise of sea level in the background of global warming. Microwave Remote sensing observations, due to their synoptic and all-weather capability, have been preferred to study the snow melt/freeze condition of the cryosphere. In the...

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Bibliographic Details
Published in:Journal of the Indian Society of Remote Sensing 2024-12, Vol.52 (12), p.2715-2726
Main Authors: Thakur, Jaya, Nayak, Rabindra K., Ramana, M. V., Chauhan, Prakash
Format: Article
Language:English
Subjects:
Altitude
Amplitudes
class
Climate change
Climatology
Cryosphere
Earth and Environmental Science
Earth Sciences
Global warming
Greenland
High altitude
Ice
Ice cover
Ice sheets
Radar
Radar cross sections
Remote sensing
Remote Sensing/Photogrammetry
Research Article
sea level
snow
Snowmelt
Surface temperature
temporal variation
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Summary:Greenland ice sheet has the potential to exert a notable impact on the rise of sea level in the background of global warming. Microwave Remote sensing observations, due to their synoptic and all-weather capability, have been preferred to study the snow melt/freeze condition of the cryosphere. In the current study, near-surface melt characteristics of the Greenland ice sheets were analysed using ISRO’s SCATSAT-1 RADAR Cross Section (RCS) observations in conjunction with ERA5 near the surface temperature at a daily scale for 2017–2020. RCS of HH and VV polarization shows similar spatial variability and sensitivity across Greenland. PDFs are similar for both the polarizations with multi- modal distribution of RCS, which signify the mixing of two or more classes of snow conditions. Mean climatology indicates the existence of 2 distinct regions: central high altitude-plateau (> 2500 m) characterized by lower mean RCS with small seasonal amplitude (
ISSN:0255-660X
0974-3006
DOI:10.1007/s12524-024-02031-9