DOI: 10.1002/2017MS001117
Scopus记录号: 2-s2.0-85040737991
论文题名: Impact of Multiple Scattering on Longwave Radiative Transfer Involving Clouds
作者: Kuo C ; -P ; , Yang P ; , Huang X ; , Feldman D ; , Flanner M ; , Kuo C ; , Mlawer E ; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 8 起始页码: 3082
结束页码: 3098
语种: 英语
英文关键词: Budget control
; Carbon dioxide
; Climate models
; Clouds
; Heating rate
; Optical properties
; Optical radar
; Radiative transfer
; Spectrometers
; doubling CO2
; Long waves
; Outgoing longwave radiation
; Radiative effects
; simulation biases
; Surface scattering
; absorption
; CALIPSO
; carbon dioxide
; cloud cover
; CloudSat
; cooling
; energy budget
; general circulation model
; heating
; longwave radiation
; MODIS
; radiative transfer
; scattering
; simulation
; top of atmosphere
; tropopause
英文摘要: General circulation models (GCMs) are extensively used to estimate the influence of clouds on the global energy budget and other aspects of climate. Because radiative transfer computations involved in GCMs are costly, it is typical to consider only absorption but not scattering by clouds in longwave (LW) spectral bands. In this study, the flux and heating rate biases due to neglecting the scattering of LW radiation by clouds are quantified by using advanced cloud optical property models, and satellite data from Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO), CloudSat, Clouds and the Earth's Radiant Energy System (CERES), and Moderate Resolution Imaging Spectrometer (MODIS) merged products (CCCM). From the products, information about the atmosphere and clouds (microphysical and buck optical properties, and top and base heights) is used to simulate fluxes and heating rates. One-year global simulations for 2010 show that the LW scattering decreases top-of-atmosphere (TOA) upward flux and increases surface downward flux by 2.6 and 1.2 W/m2, respectively, or approximately 10% and 5% of the TOA and surface LW cloud radiative effect, respectively. Regional TOA upward flux biases are as much as 5% of global averaged outgoing longwave radiation (OLR). LW scattering causes approximately 0.018 K/d cooling at the tropopause and about 0.028 K/d heating at the surface. Furthermore, over 40% of the total OLR bias for ice clouds is observed in 350–500 cm−1. Overall, the radiative effects associated with neglecting LW scattering are comparable to the counterpart due to doubling atmospheric CO2 under clear-sky conditions. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75689
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States; Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI, United States; Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Atmospheric and Environmental Research, Inc, Cambridge, MA, United States
Recommended Citation:
Kuo C,-P,, Yang P,et al. Impact of Multiple Scattering on Longwave Radiative Transfer Involving Clouds[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(8)