Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-14623-2018 |
Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol-cloud interactions over the southeast Atlantic Ocean | |
Diamond, Michael S.1; Dobracki, Anne2; Freitag, Steffen2; Griswold, Jennifer D. Small3; Heikkila, Ashley3; Howell, Steven G.2; Kacarab, Mary E.4; Podolske, James R.5; Saide, Pablo E.6,7; Wood, Robert1 | |
2018-10-12 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:19页码:14623-14636 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The colocation of clouds and smoke over the southeast Atlantic Ocean during the southern African biomass burning season has numerous radiative implications, including microphysical modulation of the clouds if smoke is entrained into the marine boundary layer. NASA's ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) campaign is studying this system with aircraft in three field deployments between 2016 and 2018. Results from ORACLES-2016 show that the relationship between cloud droplet number concentration and smoke below cloud is consistent with previously reported values, whereas cloud droplet number concentration is only weakly associated with smoke immediately above cloud at the time of observation. By combining field observations, regional chemistry-climate modeling, and theoretical boundary layer aerosol budget equations, we show that the history of smoke entrainment (which has a characteristic mixing timescale on the order of days) helps explain variations in cloud properties for similar instantaneous above-cloud smoke environments. Precipitation processes can obscure the relationship between above-cloud smoke and cloud properties in parts of the southeast Atlantic, but marine boundary layer carbon monoxide concentrations for two case study flights suggest that smoke entrainment history drove the observed differences in cloud properties for those days. A Lagrangian framework following the clouds and accounting for the history of smoke entrainment and precipitation is likely necessary for quantitatively studying this system; an Eulerian framework (e.g., instantaneous correlation of A-train satellite observations) is unlikely to capture the true extent of smoke-cloud interaction in the southeast Atlantic. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447177500002 |
WOS关键词 | MARINE BOUNDARY-LAYER ; ABSORBING AEROSOLS ; EFFECTIVE RADIUS ; SEASONAL CYCLE ; STRATOCUMULUS ; AFRICA ; AIR ; TRANSPORT ; CLIMATE ; IMPACT |
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/15109 |
专题 | 地球科学 |
作者单位 | 1.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 2.Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA; 3.Univ Hawaii Manoa, Dept Atmospher Sci, Honolulu, HI 96822 USA; 4.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 5.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 6.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 7.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Diamond, Michael S.,Dobracki, Anne,Freitag, Steffen,et al. Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol-cloud interactions over the southeast Atlantic Ocean[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(19):14623-14636. |
APA | Diamond, Michael S..,Dobracki, Anne.,Freitag, Steffen.,Griswold, Jennifer D. Small.,Heikkila, Ashley.,...&Wood, Robert.(2018).Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol-cloud interactions over the southeast Atlantic Ocean.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(19),14623-14636. |
MLA | Diamond, Michael S.,et al."Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol-cloud interactions over the southeast Atlantic Ocean".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.19(2018):14623-14636. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论