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

TitleResponse of the Hydrological Cycle in Asian Monsoon Systems to Global Warming Through the Lens of Water Vapor Wave Activity Analysis
Publication TypeJournal Article
Year of Publication2019
AuthorsXue, Daokai, Lu Jian, L. Leung Ruby, and Zhang Yaocun
JournalGeophysical Research Letters
Volume45
Number21
Pages11,904-11,912
Date Published02/2019
Abstract

The column integrated water vapor (CWV)‐based local wave activity (LWA) is adapted to examine the response of the hydrological cycle and extremes of the Asian summer monsoon in CMIP5 simulations under the RCP8.5 forcing scenario. A tight linear relationship between CWV LWA ( urn:x-wiley:00948276:media:grl58169:grl58169-math-0001) and its sink ( urn:x-wiley:00948276:media:grl58169:grl58169-math-0002, 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. Future CWV LWA over the broad Asian monsoon region shows a large increase (~35%), attributable largely to the increase of the background moisture. The scaling analysis reveals a distinct mix of the contributing factors for the increase in urn:x-wiley:00948276:media:grl58169:grl58169-math-0003 between East Asian and Indian monsoon regions, despite both experiencing sizable increase of urn:x-wiley:00948276:media:grl58169:grl58169-math-0004.

URLhttp://dx.doi.org/10.1029/2018gl078998
DOI10.1029/2018gl078998
Journal: Geophysical Research Letters
Number: 21
Volume: 45

The column integrated water vapor (CWV)‐based local wave activity (LWA) is adapted to examine the response of the hydrological cycle and extremes of the Asian summer monsoon in CMIP5 simulations under the RCP8.5 forcing scenario. A tight linear relationship between CWV LWA ( urn:x-wiley:00948276:media:grl58169:grl58169-math-0001) and its sink ( urn:x-wiley:00948276:media:grl58169:grl58169-math-0002, 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. Future CWV LWA over the broad Asian monsoon region shows a large increase (~35%), attributable largely to the increase of the background moisture. The scaling analysis reveals a distinct mix of the contributing factors for the increase in urn:x-wiley:00948276:media:grl58169:grl58169-math-0003 between East Asian and Indian monsoon regions, despite both experiencing sizable increase of urn:x-wiley:00948276:media:grl58169:grl58169-math-0004.

DOI: 10.1029/2018gl078998
Year of Publication: 2019
Citation:
Xue, D, J Lu, L Leung, and Y Zhang.  2019.  "Response of the Hydrological Cycle in Asian Monsoon Systems to Global Warming Through the Lens of Water Vapor Wave Activity Analysis."  Geophysical Research Letters 45(21): 11904-11912, doi:10.1029/2018gl078998.