The increase in stratospheric water vapor from balloonborne, frostpoint hygrometer measurements at Washington, D.C., and Boulder, Colorado

Autor: Holger Vömel, David J. Hofmann, Dieter Kley, Samuel J. Oltmans, Karen H. Rosenlof
Rok vydání: 2000
Předmět:
Zdroj: Geophysical Research Letters. 27:3453-3456
ISSN: 1944-8007
0094-8276
Popis: Stratospheric water vapor concentrations measured at two midlatltude locations in the northern hemisphere show water vapor amounts have increased at a rate of 1-1.5% yr'1 (0.05-0.07 ppmv yr"1) for the past 35 years. At Washington, D.C., meas- urements were made from 1964-1976, and at Boulder, Colorado, observations began in 1980 and continue to the present. While these two data sets do not comprise a single time series, they individually show increases over their respective measurement periods. At Boulder the trends do not show strong seasonal differences; significant increases are found throughout the year in the altitude range 16-28 km. In winter these trends are significant down to about 13 km.
Databáze: OpenAIRE
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