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Record Details

Record 47 of 5116
Evaluation of SAGE II and Balloon-Borne Stratospheric Aerosol Measurements: Evaluation of Aerosol Measurements from SAGE II, HALOE, and Balloonborne Optical Particle Counters
Author and Affiliation:
Hervig, Mark(Wyoming Univ., Dept. of Atmospheric Science, Laramie, WY United States)
Deshler, Terry(Wyoming Univ., Dept. of Atmospheric Science, Laramie, WY United States)
Moddrea, G. [Technical Monitor]
Abstract: Stratospheric aerosol measurements from the University of Wyoming balloonborne optical particle counters (OPCs), the Stratospheric Aerosol and Gas Experiment (SAGE) II, and the Halogen Occultation Experiment (HALOE) were compared in the period 1982-2000, when measurements were available. The OPCs measure aerosol size distributions, and HALOE multiwavelength (2.45-5.26 micrometers) extinction measurements can be used to retrieve aerosol size distributions. Aerosol extinctions at the SAGE II wavelengths (0.386-1.02 micrometers) were computed from these size distributions and compared to SAGE II measurements. In addition, surface areas derived from all three experiments were compared. While the overall impression from these results is encouraging, the agreement can change with latitude, altitude, time, and parameter. In the broadest sense, these comparisons fall into two categories: high aerosol loading (volcanic periods) and low aerosol loading (background periods and altitudes above 25 km). When the aerosol amount was low, SAGE II and HALOE extinctions were higher than the OPC estimates, while the SAGE II surface areas were lower than HALOE and the OPCS. Under high loading conditions all three instruments mutually agree to within 50%.
Publication Date: Jan 01, 2002
Document ID:
20020039802
(Acquired Apr 26, 2002)
Subject Category: GEOPHYSICS
Report/Patent Number: Paper-2001JD000703
Coverage: Final Report
Document Type: Reprint
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); Volume 107; No. D3; 3-1 - 3-12
Publisher Information: American Geophysical Union, United States
Contract/Grant/Task Num: NAG1-2164
Financial Sponsor: National Science Foundation; Arlington, VA United States
NASA Langley Research Center; Hampton, VA United States
Organization Source: Wyoming Univ.; Dept. of Atmospheric Science; Laramie, WY United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AEROSOLS; HALOGEN OCCULTATION EXPERIMENT; BALLOON-BORNE INSTRUMENTS; SAGE SATELLITE; RADIATION COUNTERS; OPTICAL MEASURING INSTRUMENTS; ATMOSPHERIC COMPOSITION; TIME SERIES ANALYSIS; ALTITUDE; SIZE DISTRIBUTION; AIR POLLUTION
Availability Source: Other Sources
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