DOI: 10.1002/2015GL063181
论文题名: Composition and physical properties of the Asian Tropopause Aerosol Layer and the North American Tropospheric Aerosol Layer
作者: Yu P. ; Toon O.B. ; Neely R.R. ; Martinsson B.G. ; Brenninkmeijer C.A.M.
刊名: Geophysical Research Letters
ISSN: 0094-8801
EISSN: 1944-8532
出版年: 2015
卷: 42, 期: 7 起始页码: 2540
结束页码: 2546
语种: 英语
英文关键词: ATAL
; NATAL
Scopus关键词: Atmospheric aerosols
; Clouds
; Optical properties
; Troposphere
; Aerosol optical depths
; ATAL
; Constant pressures
; Earth system model
; Model and observation
; NATAL
; Radiation modeling
; Tropospheric aerosols
; Aerosols
; aerosol property
; optical depth
; physical property
; tropopause
; Asia
; North America
英文摘要: Recent studies revealed layers of enhanced aerosol scattering in the upper troposphere and lower stratosphere over Asia (Asian Tropopause Aerosol Layer (ATAL)) and North America (North American Tropospheric Aerosol Layer (NATAL)). We use a sectional aerosol model (Community Aerosol and Radiation Model for Atmospheres (CARMA)) coupled with the Community Earth System Model version 1 (CESM1) to explore the composition and optical properties of these aerosol layers. The observed aerosol extinction enhancement is reproduced by CESM1/CARMA. Both model and observations indicate a strong gradient of the sulfur-to-carbon ratio from Europe to the Asia on constant pressure surfaces. We found that the ATAL is mostly composed of sulfates, surface-emitted organics, and secondary organics; the NATAL is mostly composed of sulfates and secondary organics. The model also suggests that emission increases in Asia between 2000 and 2010 led to an increase of aerosol optical depth of the ATAL by 0.002 on average which is consistent with observations. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928695762&doi=10.1002%2f2015GL063181&partnerID=40&md5=8077a1ea0c0da7e62e00512c9b932b5b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8417
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Yu P.,Toon O.B.,Neely R.R.,et al. Composition and physical properties of the Asian Tropopause Aerosol Layer and the North American Tropospheric Aerosol Layer[J]. Geophysical Research Letters,2015-01-01,42(7).