Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-1161-2017 |
Probing the subtropical lowermost stratosphere and the tropical upper troposphere and tropopause layer for inorganic bromine | |
Werner, Bodo1; Stutz, Jochen2; Spolaor, Max2; Scalone, Lisa1; Raecke, Rasmus1; Festa, James2; Colosimo, Santo Fedele2; Cheung, Ross2; Tsai, Catalina2; Hossaini, Ryan3; Chipperfield, Martyn P.4; Taverna, Giorgio S.4; Feng, Wuhu5; Elkins, JamesW.6; Fahey, DavidW.6; Gao, Ru-Shan6; Hintsa, Erik J.6,7; Thornberry, Troy D.6,7; Moore, Free Lee6,7; Navarro, Maria A.8; Atlas, Elliot8; Daube, Bruce C.9; Pittman, Jasna9; Wofsy, Steve9; Pfeilsticker, Klaus1 | |
2017-01-25 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA; England |
英文摘要 | We report measurements of CH4 (measured in situ by the Harvard University Picarro Cavity Ringdown Spectrometer (HUPCRS) and NOAA Unmanned Aircraft System Chromatograph for Atmospheric Trace Species (UCATS) instruments), O-3 (measured in situ by the NOAA dual-beam ultraviolet (UV) photometer), NO2, BrO (remotely detected by spectroscopic UV-visible (UV-vis) limb observations; see the companion paper of Stutz et al., 2016), and of some key brominated source gases in whole-air samples of the Global Hawk Whole Air Sampler (GWAS) instrument within the subtropical lowermost stratosphere (LS) and the tropical upper troposphere (UT) and tropopause layer (TTL). The measurements were performed within the framework of the NASA-ATTREX (National Aeronautics and Space Administration - Airborne Tropical Tropopause Experiment) project from aboard the Global Hawk (GH) during six deployments over the eastern Pacific in early 2013. These measurements are compared with TOMCAT/SLIMCAT (Toulouse Off-line Model of Chemistry And Transport/Single Layer Isentropic Model of Chemistry And Transport) 3-D model simulations, aiming at improvements of our understanding of the bromine budget and photochemistry in the LS, UT, and TTL. Changes in local O-3 (and NO2 and BrO) due to transport processes are separated from photochemical processes in intercomparisons of measured and modeled CH4 and O-3. After excellent agreement is achieved among measured and simulated CH4 and O-3, measured and modeled [NO2] are found to closely agree with <= 15 ppt in the TTL (which is the detection limit) and within a typical range of 70 to 170 ppt in the subtropical LS during the daytime. Measured [BrO] ranges between 3 and 9 ppt in the subtropical LS. In the TTL, [BrO] reaches 0.5 +/- 0.5 ppt at the bottom (150 hPa/355K/14 km) and up to about 5 ppt at the top (70 hPa/425K/18.5 km; see Fueglistaler et al., 2009 for the definition of the TTL used), in overall good agreement with the model simulations. Depending on the photochemical regime, the TOMCAT/SLIMCAT simulations tend to slightly underpredict measured BrO for large BrO concentrations, i.e., in the upper TTL and LS. The measured BrO and modeled BrO/Br-y(inorg) ratio is further used to calculate inorganic bromine, Br-y(inorg). For the TTL (i.e., when [CH4] >= 1790 ppb), [Br-y(inorg)] is found to increase from a mean of 2.63 +/- 1.04 ppt for potential temperatures (theta) in the range of 350-360K to 5.11 +/- 1.57 ppt for theta = 390 - 400K, whereas in the subtropical LS (i.e., when [CH4] <= 1790 ppb), it reaches 7.66 +/- 2.95 ppt for theta in the range of 390-400 K. Finally, for the eastern Pacific (170-90 degrees W), the TOMCAT/SLIMCAT simulations indicate a net loss of ozone of -0.3 ppbv day(-1) at the base of the TTL (theta = 355 K) and a net production of +1.8 ppbv day(-1) in the upper part (theta = 383 K). |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394599300002 |
WOS关键词 | SHORT-LIVED SUBSTANCES ; IN-SITU MEASUREMENTS ; ORGANIC-COMPOUNDS ; GAS-CHROMATOGRAPH ; LIMB MEASUREMENTS ; SCIAMACHY LIMB ; CARBON-DIOXIDE ; BR-Y ; TRANSPORT ; OZONE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30655 |
专题 | 地球科学 |
作者单位 | 1.Heidelberg Univ, Inst Environm Phys, Heidelberg, Germany; 2.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 3.Univ Lancaster, Lancaster Environm Ctr, Lancaster, England; 4.Univ Leeds, Inst Climate & Atmospher Sci, Sch Earth & Environm, Leeds, W Yorkshire, England; 5.Univ Leeds, Sch Earth & Environm, Natl Ctr Atmospher Sci, Leeds, W Yorkshire, England; 6.NOAA, Earth Syst Res Lab, Boulder, CO USA; 7.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA; 8.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA; 9.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA |
推荐引用方式 GB/T 7714 | Werner, Bodo,Stutz, Jochen,Spolaor, Max,et al. Probing the subtropical lowermost stratosphere and the tropical upper troposphere and tropopause layer for inorganic bromine[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(2). |
APA | Werner, Bodo.,Stutz, Jochen.,Spolaor, Max.,Scalone, Lisa.,Raecke, Rasmus.,...&Pfeilsticker, Klaus.(2017).Probing the subtropical lowermost stratosphere and the tropical upper troposphere and tropopause layer for inorganic bromine.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(2). |
MLA | Werner, Bodo,et al."Probing the subtropical lowermost stratosphere and the tropical upper troposphere and tropopause layer for inorganic bromine".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.2(2017). |
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