气候变化领域集成服务门户(CCPortal): An Investigation Into Biases in Instantaneous Aerosol Radiative Effects Calculated by Shortwave Parameterizations in Two Earth System Models

CCPortal

DOI	10.1029/2019JD032323
	An Investigation Into Biases in Instantaneous Aerosol Radiative Effects Calculated by Shortwave Parameterizations in Two Earth System Models
	Freidenreich S.; Paynter D.; Lin P.; Ramaswamy V.; Jones A.L.; Feldman D.; Collins W.D.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	Because the forcings to which Coupled Model Intercomparison Project - Phase 5 (CMIP5) models were subjected were poorly quantified, recent efforts from the Radiative Forcing Model Intercomparison Project (RFMIP) have focused on developing and testing models with exacting benchmarks. Here, we focus on aerosol forcing to understand if for a given distribution of aerosols, participating models are producing a radiometrically-accurate forcing. We apply the RFMIP experimental protocol for assessing flux biases in aerosol instantaneous radiative effect (IRE) on two participating models, GFDL AM4 and CESM 1.2.2. The latter model contains the RRTMG radiation code which is widely used among CMIP6 GCM's. We conduct a series of calculations that test different potential sources of error in these models relative to line-by-line benchmarks. We find two primary sources of error: two-stream solution methods and the techniques to resolve spectral dependencies of absorption and scattering across the solar spectrum. The former is the dominant source of error for both models but the latter is more significant as a contributing factor for CESM 1.2.2. Either source of error can be addressed in future model development, and these results both demonstrate how the RFMIP protocol can help determine the origins of parameterized errors relative to their equivalent benchmark calculations for participating models, as well as highlight a viable path towards a more rigorous quantification and control of forcings for future CMIP exercises. © 2021. American Geophysical Union. This article is a U.S. Government work and is in the public domain in the USA.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185151
作者单位	NOAA/GFDL, Princeton, NJ, United States; University of Maryland, College Park, MD, United States; Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Earth and Planetary Science, University of California, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Freidenreich S.,Paynter D.,Lin P.,et al. An Investigation Into Biases in Instantaneous Aerosol Radiative Effects Calculated by Shortwave Parameterizations in Two Earth System Models[J],2021,126(11).
APA	Freidenreich S..,Paynter D..,Lin P..,Ramaswamy V..,Jones A.L..,...&Collins W.D..(2021).An Investigation Into Biases in Instantaneous Aerosol Radiative Effects Calculated by Shortwave Parameterizations in Two Earth System Models.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Freidenreich S.,et al."An Investigation Into Biases in Instantaneous Aerosol Radiative Effects Calculated by Shortwave Parameterizations in Two Earth System Models".Journal of Geophysical Research: Atmospheres 126.11(2021).