التفاصيل البيبلوغرافية
| العنوان: |
Increasing Water Vapor in the Stratosphere and Mesosphere After 2002. |
| المؤلفون: |
Yue, Jia, Russell, James, Gan, Quan, Wang, Tao, Rong, Pingping, Garcia, Rolando, Mlynczak, Martin |
| المصدر: |
Geophysical Research Letters; 11/28/2019, Vol. 46 Issue 22, p13452-13460, 9p |
| مصطلحات موضوعية: |
WATER vapor, SOLAR cycle, STRATOSPHERE, ATMOSPHERIC models, WATER, MESOSPHERE, TIME series analysis |
| مستخلص: |
Water vapor (H2O) measurements made by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument between 2002 and 2018 and by the Aura Microwave Limb Sounder (MLS) instrument between 2004 and 2018 are analyzed to determine the linear trend and solar cycle response of H2O in the stratosphere and mesosphere. Both SABER and MLS show a rapid global H2O increase of 5–6% per decade in the lower stratosphere after the 2001 drop. The increasing zonal mean H2O at 40°N in SABER and MLS is consistent with the Boulder frost point hygrometer data in the lower stratosphere. The global distribution of SABER and MLS H2O trends are positive at most altitudes and latitudes, and they peak in the tropical lower stratosphere. In the mesosphere the SABER H2O trend is 0.1–0.2 ppmv per decade and the MLS H2O trend is 0.2–0.3 ppmv per decade. The trend and solar cycle response derived from the observations are compared against the Whole Atmosphere Community Climate Model (WACCM). The solar cycle response of H2O from WACCM agrees with SABER and MLS. The linear H2O trend from WACCM does not show the observed increase in the lower stratosphere. Key Points: SABER and MLS show a rapid global water vapor increase of 5‐6% per decade in the lower stratosphere after 2002.SABER and MLS water vapor show positive trend and strong negative correlation with solar cycle in the mesosphere.SABER H2O time series and trend at 40N are consistent with the Boulder frost point hygrometer measurements after 2002. [ABSTRACT FROM AUTHOR] |
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