GSTDTAP  > 气候变化
DOI10.1002/2016JD026222
Detecting shifts in tropical moisture imbalances with satellite-derived isotope ratios in water vapor
Bailey, A.1,2; Blossey, P. N.3; Noone, D.4; Nusbaumer, J.5,6,7; Wood, R.3
2017-06-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:11
文章类型Article
语种英语
国家USA
英文摘要

As global temperatures rise, regional differences in evaporation (E) and precipitation (P) are likely to become more disparate, causing the drier E-dominated regions of the tropics to become drier and the wetter P-dominated regions to become wetter. Models suggest that such intensification of the water cycle should already be taking place; however, quantitatively verifying these changes is complicated by inherent difficulties in measuring E and P with sufficient spatial coverage and resolution. This paper presents a new metric for tracking changes in regional moisture imbalances (e.g., E-P) by defining D(q)the isotope ratio normalized to a reference water vapor concentration of 4mmolmol(-1)and evaluates its efficacy using both remote sensing retrievals and climate model simulations in the tropics. By normalizing the isotope ratio with respect to water vapor concentration, D-q isolates the portion of isotopic variability most closely associated with shifts between E- and P-dominated regimes. Composite differences in D-q between cold and warm phases of El Nino-Southern Oscillation (ENSO) verify that D-q effectively tracks changes in the hydrological cycle when large-scale convective reorganization takes place. Simulated D-q also demonstrates sensitivity to shorter-term variability in E-P at most tropical locations. Since the isotopic signal of E-P in free tropospheric water vapor transfers to the isotope ratios of precipitation, multidecadal observations of both water vapor and precipitation isotope ratios should provide key evidence of changes in regional moisture imbalances now and in the future.


英文关键词water isotope ENSO TES water cycle intensification amount effect
领域气候变化
收录类别SCI-E
WOS记录号WOS:000404131800013
WOS关键词SOUTHERN-OSCILLATION ; HYDROLOGICAL CYCLE ; DEEP CONVECTION ; NORTHERN BORNEO ; PRECIPITATION ; CLIMATE ; OCEAN ; ISOTOPOLOGUES ; PROFILES ; PACIFIC
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/32464
专题气候变化
作者单位1.Univ Washington, Joint Inst Study Atmosphere & Oceans, Seattle, WA 98195 USA;
2.Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA;
3.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA;
4.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA;
5.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO USA;
6.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO USA;
7.NASA, Goddard Inst Space Studies, New York, NY 10025 USA
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Bailey, A.,Blossey, P. N.,Noone, D.,et al. Detecting shifts in tropical moisture imbalances with satellite-derived isotope ratios in water vapor[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(11).
APA Bailey, A.,Blossey, P. N.,Noone, D.,Nusbaumer, J.,&Wood, R..(2017).Detecting shifts in tropical moisture imbalances with satellite-derived isotope ratios in water vapor.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(11).
MLA Bailey, A.,et al."Detecting shifts in tropical moisture imbalances with satellite-derived isotope ratios in water vapor".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.11(2017).
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