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Meteorological Drivers of Cold Temperatures in the Western Pacific TTL
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Author and Affiliation:
Pfister, Leonhard(NASA Ames Research Center, Moffett Field, CA, United States)
Ueyama, Rei(Bay Area Environmental Research Inst., Moffett Field, CA, United States)
Jensen, Eric J.(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: During the recent October 2016 aircraft sampling mission of the Tropical Tropopause Layer (POSIDON -- Pacific Oxidants, Sulfur, Ice, Dehydration, and cONvection), Western Pacific October TTL temperatures were anomalously cold due to a combination of La Nina conditions and a very stationary convective pattern. POSIDON also had more October Tropical Cyclones than typical, and tropical cyclones have substantial negative TTL temperatures associated with them. This paper investigates how meteorology in the troposphere drives TTL temperatures, and how these temperatures, coupled with the circulation, produce TTL clouds. We will also compare October TTL cloud distributions in different years, examining the relationship of clouds to October temperature anomalies.
Publication Date: Dec 11, 2017
Document ID:
20170011687
(Acquired Dec 14, 2017)
Subject Category: METEOROLOGY AND CLIMATOLOGY
Report/Patent Number: ARC-E-DAA-TN48688
Document Type: Conference Paper
Meeting Information: AGU Fall Meeting 2017; 11-15 Dec. 2017; New Orleans, LA; United States
Meeting Sponsor: American Geophysical Union; Washington, DC, United States
Contract/Grant/Task Num: NNX12AD05A
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA, United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: METEOROLOGY; LOW TEMPERATURE; TROPICAL REGIONS; TROPOPAUSE; LA NINA; PACIFIC OCEAN; CYCLONES; CLOUDS (METEOROLOGY); ANOMALIES; OXIDIZERS; SULFUR; ICE; DEHYDRATION; CONVECTION; TROPOSPHERE
Availability Notes: Abstract Only
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