Skip to main content

Description

This Level-3 (L3) data set includes weekly Northern Hemisphere landscape freeze/thaw (FT) data derived from L-band radiometer brightness temperature observations, acquired by the Aquarius sensor on board Argentina's Satélite de Aplicaciones Científicas (SAC-D) satellite. The data are distributed on the Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0), with a spatial resolution of 36 km. The SAC-D satellite was developed collaboratively between NASA and Argentina's space agency, Comisión Nacional de Actividades Espaciales (CONAE).

Version Description

This data set is being updated to Version 5 to match the other Aquarius polar gridded data products.

Product Summary

Platforms
SAC-D
Instruments
AQUARIUS_RADIOMETER
Spatial Extent

N: 87.4 S: 50 E: 180 W: -180

Spatial Resolution
36 Kilometers x 36 Kilometers
Spatial Reference System(s)
WGS 84 / NSIDC EASE-Grid 2.0 North (EPSG:6931)
Location
ARCTIC
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2011-08-25 to 2015-06-04
Temporal Resolution
7 Day
Concept ID
C2777852942-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
197
Processing Level
3
Published
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

Roy, A., Brucker, L., Prince, M., Royer, A., & Derksen, C. (2018). Aquarius L3 Weekly Polar-Gridded Landscape Freeze/Thaw Data, Version 5 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/OV4R18NL3BQR Date Accessed: 2026-09-22

Documents

No Results

QUESTIONS & SUPPORT

Have a question?

Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.

Get help on Earthdata Forum
Earthdata
Forum