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
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.
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.
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.
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.
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.
More satellite views of Hurricane Isabel