气候变化领域集成服务门户(CCPortal): The Connected Isotopic Water Cycle in the Community Earth System Model Version 1

CCPortal

DOI	10.1029/2019MS001663
	The Connected Isotopic Water Cycle in the Community Earth System Model Version 1
	Brady E.; Stevenson S.; Bailey D.; Liu Z.; Noone D.; Nusbaumer J.; Otto-Bliesner B.L.; Tabor C.; Tomas R.; Wong T.; Zhang J.; Zhu J.
发表日期	2019
ISSN	19422466
起始页码	2547
结束页码	2566
卷号	11 期号:8
英文摘要	Because of the pervasive role of water in the Earth system, the relative abundances of stable isotopologues of water are valuable for understanding atmospheric, oceanic, and biospheric processes, and for interpreting paleoclimate proxy reconstructions. Isotopologues are transported by both large-scale and turbulent flows, and the ratio of heavy to light isotopologues changes due to fractionation that can accompany condensation and evaporation processes. Correctly predicting the isotopic distributions requires resolving the relationships between large-scale ocean and atmospheric circulation and smaller-scale hydrological processes, which can be accomplished within a coupled climate modeling framework. Here we present the water isotope-enabled version of the Community Earth System Model version 1 (iCESM1), which simulates global variations in water isotopic ratios in the atmosphere, land, ocean, and sea ice. In a transient Last Millennium simulation covering the 850–2005 period, iCESM1 correctly captures the late-twentieth-century structure of δ18O and δD over the global oceans, with more limited accuracy over land. The relationship between salinity and seawater δ18O is also well represented over the observational period, including interbasin variations. We illustrate the utility of coupled, isotope-enabled simulations using both Last Millennium simulations and freshwater hosing experiments with iCESM1. Closing the isotopic mass balance between all components of the coupled model provides new confidence in the underlying depiction of the water cycle in CESM, while also highlighting areas where the underlying hydrologic balance can be improved. The iCESM1 is poised to be a vital community resource for ongoing model development with both modern and paleoclimate applications. ©2019. The Authors.
英文关键词	CESM; climate modeling; water isotopologues
语种	英语
scopus关键词	Climate models; Earth atmosphere; Sea ice; Atmospheric circulation; CESM; Coupled climate model; Hydrological process; Isotopic distributions; Isotopic mass balance; On-going model development; Water isotopologues; Isotopes; climate modeling; evaporation; hydrological cycle; isotopic fractionation; reconstruction; stable isotope; turbulent flow
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156879
作者单位	Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Bren School of Environmental Science & Management, University of California, Santa Barbara, CA, United States; Department of Geography, The Ohio State University, Columbus, OH, United States; College of Earth, Ocean, & Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; NASA Goddard Institute for Space Studies and Center for Climate Systems Research, Columbia University, New York, NY, United States; Department of Geosciences, University of Connecticut, Storrs, CT, United States; Department of Computer Science, University of Colorado Boulder, Boulder, CO, United States; Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM, United States; Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Brady E.,Stevenson S.,Bailey D.,et al. The Connected Isotopic Water Cycle in the Community Earth System Model Version 1[J],2019,11(8).
APA	Brady E..,Stevenson S..,Bailey D..,Liu Z..,Noone D..,...&Zhu J..(2019).The Connected Isotopic Water Cycle in the Community Earth System Model Version 1.Journal of Advances in Modeling Earth Systems,11(8).
MLA	Brady E.,et al."The Connected Isotopic Water Cycle in the Community Earth System Model Version 1".Journal of Advances in Modeling Earth Systems 11.8(2019).