Location
East-West Center, University of Hawai'i at Manoa (Honolulu, Hawai'i)
Start Date
16-10-2012 5:30 PM
End Date
16-10-2012 7:30 PM
Document Type
Poster
Description
Water vapor contributes to the radiation budget of earth and the photochemistry of ozone. Therefore, it is important to understand the variation of water vapor in the research of global warming and ozone depletion. Noting that the saturation water vapor mixing ratio in the Cold-Point Tropopause (CPT) is not always a good estimate of water amount entering the stratosphere, Selkirk et al. (2010) defined the Tropopause Saturation Layer (TSL) using the cryogenic frostpoint hygrometer data taken in the tropical eastern Pacific during Northern Hemisphere summer. In the present study, the effectiveness of TSL is examined by using the SOWER data taken in the tropical western Pacific during Northern Hemisphere winter. The contribution of waves associated with the intraseasonal oscillation to dehydration will be discussed along with that of the seasonal variation in the TTL. The results will be reported at poster presentation.
The Dehydration process in the Tropical Tropopause Layer
East-West Center, University of Hawai'i at Manoa (Honolulu, Hawai'i)
Water vapor contributes to the radiation budget of earth and the photochemistry of ozone. Therefore, it is important to understand the variation of water vapor in the research of global warming and ozone depletion. Noting that the saturation water vapor mixing ratio in the Cold-Point Tropopause (CPT) is not always a good estimate of water amount entering the stratosphere, Selkirk et al. (2010) defined the Tropopause Saturation Layer (TSL) using the cryogenic frostpoint hygrometer data taken in the tropical eastern Pacific during Northern Hemisphere summer. In the present study, the effectiveness of TSL is examined by using the SOWER data taken in the tropical western Pacific during Northern Hemisphere winter. The contribution of waves associated with the intraseasonal oscillation to dehydration will be discussed along with that of the seasonal variation in the TTL. The results will be reported at poster presentation.
