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Record 3 of 1481
Variability in Ozone in the Tropical Upper Troposphere-Lower Stratosphere from the 1998-2000 SHADOZ (Southern Hemisphere Additional Ozonesondes) Data
Author and Affiliation:
Thompson, A. M.(NASA Goddard Space Flight Center, Greenbelt, MD United States)
Witte, J. C.(NASA Goddard Space Flight Center, Greenbelt, MD United States)
McPeters, R. D.(NASA Goddard Space Flight Center, Greenbelt, MD United States)
Schmidlin, F. J.(NASA Wallops Flight Facility, Wallops Island, VA United States)
Oltmans, S. J.(National Oceanic and Atmospheric Administration, Boulder, CO United States)
Kirchhoff, V. W. J. H.(Instituto Nacional de Pesquisas Espacias, Sao Jose dos Campos, Brazil)
Coetzee, G. J. R.(South African Weather Service, South Africa)
Posny, F.(Reunion Univ., France)
Kawakami, S.(National Space Development Agency, Tokyo, Japan)
Ogawa, T.(National Space Development Agency, Tokyo, Japan) Show more authors
Abstract: The first view of lower stratospheric and upper tropospheric structure from sondes is provided by a 3-year, 10-site record from the Southern Hemisphere ADditional OZonesondes (SHADOZ) network: <http://code9l6.gsfc.nasa.gov/Data_service s/shadoz>. Observations covering 1998-2000 were made over Ascension Island; Nairobi, Kenya; Irene, South Africa; Reunion Island; Watukosek, Java; Fiji; Tahiti; American Samoa; San Cristobal, Galapagos; Natal, Brazil. Taking the UT/LS (upper troposphere- lower stratosphere) as the region between 12 and 17 km, we examine ozone variability in this region on a week-to-week and seasonal basis. The tropopause is lower in September-October-November than in March-April-May, when ozone is a minimum at most SHADOZ stations. A zonal wave-one pattern (referring to ozone mixing ratios greater over the Atlantic and adjacent continents than over the Pacific and eastern Indian Ocean), persists all year. The wave, predominantly in the troposphere and with variable magnitude, appears to be due to general circulation - with subsidence over the Atlantic and frequent deep convection over the Pacific and Indian Ocean. The variability of deep convection most prominent at Java, Fiji, Samoa and Natal - is explored in time-vs-altitude ozone curtains. Stratospheric incursions into the troposphere are most prominent in soundings at Irene and Reunion Island.
Publication Date: Jan 01, 2002
Document ID:
20020083051
(Acquired Nov 08, 2002)
Subject Category: ENVIRONMENT POLLUTION
Document Type: Preprint
Meeting Information: World Space Congress; 10-19 Oct. 2002; Houston, TX; United States
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: TROPOSPHERE; STRATOSPHERE; VARIABILITY; OZONE; TROPOPAUSE; SONDES; TROPICAL REGIONS; SOUTHERN HEMISPHERE; CONVECTION
Availability Source: Other Sources
Availability Notes: Abstract Only
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