Skip to content. | Skip to navigation

Personal tools

AIRS Images of Isabel

Visualization of AIRS Level-1B and Level-2 HDF Data Sets

The Atmospheric Infrared Sounder (AIRS) is an ultra-high spectral resolution infrared grating spectrometer aboard the EOS Aqua satellite. AIRS and its partner sounder, the Advanced Microwave Sounding Unit-A (AMSU-A), measure humidity, temperature, cloud properties, and amounts of greenhouse gases. AIRS also provides land and sea surface temperatures. Five AIRS flagship science products are publicly available to the user community: AIRS IR radiance, AIRS Vis/NIR radiance, AMSU brightness temperatures, cloud cleared radiance and core retrieval products. The AIRS Data Support Team has developed IDL-based tools for visualizing these data products. Hurricane Isabel is shown below from the unique perspective of AIRS, for September 16, 2003.

Click on images for a larger view
Hurricane Isabel as seen in image of AIRS calibrated Vis/NIR radiances.
VIS_Rad (AIRVBRAD/Level-1B)
AIRS calibrated Vis/NIR radiances. This image is a false color composite using 0.71-0.92 µm, 0.58-0.68 µm, and 0.40-0.44 µm bands. The nadir pixel resolution is 2.3 km.
Hurricane Isabel as seen in image of AIRS calibrated IR radiances.
AIRS_Rad (AIRIBRAD/Level-1B)
AIRS calibrated IR radiances. There are 1378 channels to choose from, covering the 3.7-15.4 µm spectral region. The nadir pixel resolution is 13.5 km.
Hurricane Isabel as seen in image of AMSU-A1 and A2 combined calibrated brightness temperatures.
AMSU_Rad (AIRABRAD/Level-1B)
AMSU-A1 and A2 combined calibrated brightness temperatures. AMSU-A is primarily a temperature sounder that provides atmospheric information in the presence of clouds, which can be used to correct the AIRS IR measurements for the effects of clouds. The nadir pixel resolution is 40.5 km.
Hurricane Isabel as seen in image of AIRS IR radiances for each cloud-free AMSU footprint.
CC (AIRI2CCF/Level-2)
AIRS IR radiances for each cloud-free AMSU footprint. Cloud bands from Isabel are clearly delineated in this image. Measurements are made at 2378 spectral channels just like the AIRIBRAD product.


Composite images of Hurricane Isabel showing core AIRS physical retrieval at each AMSU footprint.
RetStd (AIRX2RET/Level-2)
Core AIRS physical retrieval at each AMSU footprint. It consists of estimates of cloud and surface properties, profiles of retrieved temperature, water vapor, ozone, etc. It has 28 standard pressure levels for profiles, from 1000 mb to 0.2 mb.

AIRS global image showing Hurricane Isabel.

More satellite views of Hurricane Isabel
Document Actions
NASA Logo - nasa.gov
NASA Privacy Policy and Important Notices
Last updated: Oct 16, 2009 04:54 PM ET
Top