Far-infrared remote sensing measurements of cirrus clouds during AFWEX

Clare Lee; K. Franklin Evans; Ira G. Nolt; William L. Smith; Michael D. Vanek

doi:10.1117/12.454461

31 January 2002 Far-infrared remote sensing measurements of cirrus clouds during AFWEX

Clare Lee, K. Franklin Evans, Ira G. Nolt, William L. Smith, Michael D. Vanek

Proceedings Volume 4539, Remote Sensing of Clouds and the Atmosphere VI; (2002) https://doi.org/10.1117/12.454461
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

Abstract

Remote sensing measurements of cirrus clouds are crucial for improving global climate models. Spectral measurements of the far-infrared region provide especially useful information to retrieve cirrus ice water path and particle size properties. Earth radiance spectra of this region have been obtained for a range of cloud conditions using the airborne instrument FIRSC (Far-InfraRed Sensor for Cirrus). The instrument flew on board the high altitude Proteus aircraft in the ARM-FIRE Water Vapor Experiment (AFWEX) during the Nov - Dec 2000 Intensive Operations Period. FIRSC is a Martin-Puplett type Fourier transform spectrometer with two channels covering the ranges 10 - 33 cm^-1 and 80 -140 cm^-1 at a resolution of 0.1 cm^-1. It has achieved a noise equivalent temperature of approximately 1K at 30 cm^-1 using a scan duration of 4 seconds. For the first time this far-infrared data has been compared to data from the thermal IR NAST-I (NPOESS Airborne Sounder Testbed - Interferometer), which was part of the same payload during the AFWEX flights. Retrievals of cirrus ice water path and particle size from the FIRSC data are presented.

Citation Download Citation

Clare Lee, K. Franklin Evans, Ira G. Nolt, William L. Smith, and Michael D. Vanek "Far-infrared remote sensing measurements of cirrus clouds during AFWEX", Proc. SPIE 4539, Remote Sensing of Clouds and the Atmosphere VI, (31 January 2002); https://doi.org/10.1117/12.454461

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available