DOI: 10.1175/JCLI-D-12-00673.1
Scopus记录号: 2-s2.0-84884243732
论文题名: Total heating characteristics of the ISCCP tropical and subtropical cloud regimes
作者: Stachnik J.P. ; Schumacher C. ; Ciesielski P.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 18 起始页码: 7097
结束页码: 7116
语种: 英语
Scopus关键词: Community atmosphere model
; Composite profiles
; Implications for futures
; Integrated cooling
; International satellite cloud climatology projects
; Marine boundary layer clouds
; Mesoscale Convective System
; Stratocumulus clouds
; Climatology
; Clouds
; Computer simulation
; Natural convection
; Storms
; Tropics
; Troposphere
; Heating
; boundary layer
; cirrus
; cloud
; convective system
; heat source
; heating
; Madden-Julian oscillation
; marine atmosphere
; mesoscale meteorology
; stratocumulus
; stratus
; troposphere
英文摘要: Composite profiles of the apparent heat source Q1 and moisture sink Q2 are calculated for the International Satellite Cloud Climatology Project (ISCCP) cloud regimes (or "weather states") using sounding observations from 10 field campaigns comprising both tropical and subtropical domains. Distinct heating profiles were determined for each ISCCP cloud regime, ranging from strong, upper-tropospheric heating for mesoscale convective systems (WS1) to integrated cooling for populations typically associated with marine stratus and stratocumulus clouds (WS5, WS6, and WS7). Despite being primarily associated with thin cirrus, the corresponding regime (WS4) has heating maxima in the lower and midtroposphere due to the presence of underlying clouds. Regime-averagedQ2 profiles showed similar transitions with strong drying observed for deep convection and low-level moistening for marine boundary layer clouds. The derived profiles were generally similar over land and ocean with the notable exception of the fair-weather cumulus regime (WS8). Additional midlevel moistening was identified for several weather states over land, suggesting enhanced detrainment and more frequent congestus clouds compared to oceanic domains. Acontrol simulation using the Community Atmosphere Model, version 4 (CAM4), was similar to the largescale patterns of diabatic heating at low levels produced by the ISCCP composites. Differences were more pronounced at middle and upper levels and are largely attributed to the uncertainty in the heating profiles for the cumulus regime (WS8). Low-level heating anomalies were calculated for each phase of the Madden- Julian oscillation (MJO) and they precede upper-tropospheric heating from deep convection by 3-4 phases. Implications for future research using ISCCP heating reconstructions are also discussed. © 2013 American Meteorological Society. 资助项目: National Science Foundation
; NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51659
Appears in Collections: 气候变化事实与影响
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作者单位: Texas A and M University, College Station, TX, United States; Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Stachnik J.P.,Schumacher C.,Ciesielski P.E.. Total heating characteristics of the ISCCP tropical and subtropical cloud regimes[J]. Journal of Climate,2013-01-01,26(18)