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AMSU-A Level 1B Calibrated, Geolocated Radiances NRT

Product Description Product Summary

AMSU-A Level 1B NRT data sample product

The AMSU-A level 1B data set contains AMSU-A calibrated and geolocated brightness temperatures in degrees Kelvin. This data set is produced by the same core science algorithms as in the regular science data production, but using predicted ephemeris in place of definitive ephemeris data and possibly without using optional dynamics input; AIRAASCI for previous and next 6 minutes. The advantage of NRT data is its fast turnaround time, generally available within 3 hours of observations globally. They can be utilized in regional weather forecast campaigns. The NRT data sets stay for about 7 days from the time they are generated.

More information on general AIRS AMSU level 1B products is found in AIRABRAD

GES DISC Data Access

Note:  Access to AIRS NRT data requires prior user registration.  For details, please see: LANCE Registration

ESDT Shortname:

Global, Twice Daily
(Daytime and Nighttime)

40.5 km FOV at nadir

Spectral Range:
AMSU-A1: 13 channels from 50 - 90 GHz
AMSU-A2: 2 channels from 23 - 32 GHz 

0.6 MB/file, 240 files/day

Product Guide:
AIRS User Guide

Instrument Guide:
AMSU-A Instrument Guide

To plot AMSU brightness temperatures 
on satellite projection: 
(can save the image as well)
idl -novm -rt=airs1b_look.sav –args 
filename channel_number(option) 

(default channel=3; 50300.0 MHz)
amsuFrequency = [23800.0, 31400.0, 
50300.0, 52800.0, 53596.0, 54400.0, 
54940.0, 55500.0, 57290.0, 57290.0, 
57290.0, 57290.0, 57290.0, 
57290.0, 89000.0] MHz
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Last updated: Aug 31, 2012 03:24 PM ET