• Welcome to the new nsidc.org! To get acquainted with what's changed, read our spotlight article: NSIDC.org website: New look and new features.

    Please note that we are in a beta launch of this website. During the beta phase, our website search may act unpredictably until the website stabilizes.

AMSR-E/AMSR2 Unified L3 Daily 12.5 km Brightness Temperatures, Sea Ice Concentration, Motion & Snow Depth Polar Grids, Version 1 (AU_SI12)
Data set:
AU_SI12
Citation
Subscribe
Service
This is the most recent version of these data.
Version Summary
Initial release

Overview

The AMSR-E/AMSR2 Unified Level-3 12.5 km product provides brightness temperatures, sea ice concentration, and snow depth over sea ice for the Northern and Southern Hemisphere, as well as sea ice motion for the Arctic. This data set includes daily brightness temperature fields for channels ranging from 18.7 GHz through 89.0 GHz, daily sea ice concentration fields, and daily sea ice concentration difference fields for ascending orbits, descending orbits, and full orbit daily averages. Snow depth over sea ice is provided as a five-day running average for the Arctic and Antarctic. Sea Ice motion is provided daily for tracking ice movement over consecutive days in the Arctic. Note: This product uses the Japan Aerospace Exploration Agency (JAXA) AMSR2 Level-1R input brightness temperatures that are calibrated, or unified, across the JAXA AMSR-E and JAXA AMSR2 Level-1R products.
Data Contributor(s):
  • Walter
    Meier
  • Thorsten
    Markus
  • Josefino 'Joey'
    Comiso
Parameter(s):
BRIGHTNESS TEMPERATURE SEA ICE CONCENTRATION SEA ICE MOTION SNOW DEPTH
Platform(s):
GCOM-W1
Sensor(s):
AMSR2
Data Format(s):
HDF-EOS5
Temporal Coverage:
2 July 2012 to present
Temporal Resolution:
1 day, 2 day, 5 day
Spatial Resolution:
12.5 km
12.5 km
,
12.5 km
12.5 km
,
12.5 km
12.5 km
Spatial Coverage:
N:
-39.23
S:
-89.24
E:
180
W:
-180
N:
89.24
S:
30.98
E:
180
W:
-180

Data Access & Tools

A free NASA Earthdata Login account is required to access these data. Learn More

Help Articles

How To

Many NSIDC data set web pages provide the ability to search and filter data with spatial and temporal contstraints using a map-based interface. This article outlines how to order NSIDC DAAC data using advanced searching and filtering. 
To convert HDF5 files into binary format you will need to use the h5dump utility, which is part of the HDF5 distribution available from the HDF Group. How you install HDF5 depends on your operating system.
Data subscriptions are available for select NSIDC DAAC data collections (found below). Our subscription service automatically sends you new data as they are delivered from active NASA satellite missions.
  Data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system or through our Application Programming Interface (API).