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Response of the Hydrological Cycle in Asian Monsoon Systems to Global Warming Through the Lens of Water Vapor Wave Activity Analysis

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2018GL078998· OSTI ID:1489282
 [1];  [2];  [2];  [1]
  1. Nanjing Univ. (China)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
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Here, the column integrated water vapor (CWV)-based local wave activity (LWA) is adapted to examine the response of the hydrological cycle and extreme of the Asian summer monsoon in CMIP5 simulations under the RCP8.5 forcing scenario. A tight linear relationship between CWV LWA (A+) and its sink (P$$ ~\atop{-}$$E+), which measures the intensity of the local hydrological cycle and extremes, affords a simple scaling framework for the hydrological cycle intensity in terms of the contributions from (i) ratio of moisture participating in the hydrological cycle, (ii) stirring length scale, (iii) background moisture gradient, and (iv) hydrological cycling rate (HCR). Future moisture LWA over the broad Asian monsoon region shows a large increase (~35%), attributable largely to the increase of the background moisture. Laslty, the scaling analysis reveals a distinct mix of the contributing factors for the increase in (P$$ ~\atop{-}$$E+) between East Asian and Indian monsoon regions, despite both experiencing sizable increase of (P$$ ~\atop{-}$$E+).
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1489282
Alternate ID(s):
OSTI ID: 1480869
Report Number(s):
PNNL-SA--135250
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 21 Vol. 45; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (5)

Figure 1(p. 2)figure Figure 1
Figure 2(p. 4)figure Figure 2
Figure 3(p. 5)figure Figure 3
Figure 4(p. 6)figure Figure 4
Figure 5(p. 7)figure Figure 5

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Related Subjects

54 ENVIRONMENTAL SCIENCES
Asian monsoon
CMIP
Indian monsoon
global warming
hydrological cycle
wave activity