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Description

This data set contains bulk landscape frozen or thawed status over seasonally frozen land, as well as snowmelt status over glacierized areas for the High Mountain Asia region. Daily Freeze/Thaw/Melt (F/T/M) status is derived from vertically polarized (V-pol) C-band (5.255 GHz) backscatter measurements that were acquired by the Advanced Scatterometer (ASCAT) on EUMETSAT Metop-A and Metop-B satellites. Swath-ordered observations are spatially enhanced using the Scatterometer Image Reconstruction (SIR) algorithm, posted on Earth-fixed 4.45 km grids, and interpolated to a daily product from the original 3-day A.M. overpasses.

Product Summary

Platforms
MetOP
Instruments
ASCAT
Spatial Extent

N: 44.683 S: 19.125 E: 105.577 W: 63.427

Spatial Resolution
4.45 Kilometers x 4.45 Kilometers
Geographic Region
HIMALAYAS
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2009-01-01 to 2017-10-12
Concept ID
C3249538074-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
3207
Processing Level
3
Science Keywords
Freeze/Thaw

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Steiner, N., & McDonald, K. (2018). High Mountain Asia ASCAT Freeze/Thaw/Melt Status, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/L319IEPK63VC Date Accessed: 2025-12-14

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