Australian water mass variations from GRACE data linked to Indo-Pacific climate variability

被引：37

作者：

Garcia-Garcia, David ^{[1
]}

Ummenhofer, Caroline C. ^{[2
]}

Zlotnicki, Victor ^{[3
]}

机构：

[1] Univ Alicante, EPS, Dept Appl Math, Alicante, Spain

[2] Univ New S Wales, Climate Change Res Ctr, Sydney, NSW, Australia

[3] CALTECH, Jet Prop Lab, Pasadena, CA USA

来源：

REMOTE SENSING OF ENVIRONMENT | 2011年 / 115卷 / 09期

关键词：

Water mass variations; Australia; Indian Ocean Dipole; Tpime variable gravity; TIME-VARIABLE GRAVITY; INDIAN-OCEAN; ANOMALIES; DIPOLE;

D O I：

10.1016/j.rse.2011.04.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Time-variable gravity data from the Gravity Recovery And Climate Experiment (GRACE) mission are used to study total water content over Australia for the period 2002-2010. A time-varying annual signal explains 61% of the variance of the data, in good agreement with two independent estimates of the same quantity from hydrological models. Water mass content variations across Australia are linked to Pacific and Indian Ocean variability, associated with El Nino-Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), respectively. From 1989, positive (negative) IOD phases were related to anomalously low (high) precipitation in southeastern Australia, associated with a reduced (enhanced) tropical moisture flux. In particular, the sustained water mass content reduction over central and southern regions of Australia during the period 2006-2008 is associated with three consecutive positive IOD events. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：2175 / 2183

页数：9

共 46 条

[1] Recent intensification of tropical climate variability in the Indian Ocean [J].

Abram, Nerilie J. ;

Gagan, Michael K. ;

Cole, Julia E. ;

Hantoro, Wahyoe S. ;

Mudelsee, Manfred .

NATURE GEOSCIENCE, 2008, 1 (12) :849-853

[2] On the suitability of the 4° x 4° GRACE mascon solutions for remote sensing Australian hydrology [J].

Awange, J. L. ;

Fleming, K. M. ;

Kuhn, M. ;

Featherstone, W. E. ;

Heck, B. ;

Anjasmara, I. .

REMOTE SENSING OF ENVIRONMENT, 2011, 115 (03) :864-875

[3] GRACE Hydrological Monitoring of Australia: Current Limitations and Future Prospects [J].

Awange, J. L. ;

Sharifi, M. A. ;

Baur, O. ;

Keller, W. ;

Featherstone, W. E. ;

Kuhn, M. .

JOURNAL OF SPATIAL SCIENCE, 2009, 54 (01) :23-36

[4]

BETTADPUR B, 2007, CSR LEVEL 2 PROCESSI

[5] Climate change contributes to more frequent consecutive positive Indian Ocean Dipole events [J].

Cai, W. ;

Sullivan, A. ;

Cowan, T. .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[6] Dynamics of late autumn rainfall reduction over southeastern Australia [J].

Cai, Wenju ;

Cowan, Tim .

GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (09)

[7] Rising temperature depletes soil moisture and exacerbates severe drought conditions across southeast Australia [J].

Cai, Wenju ;

Cowan, Tim ;

Briggs, Peter ;

Raupach, Michael .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[8] On inversion for mass distribution from global (time-variable) gravity field [J].

Chao, BF .

JOURNAL OF GEODYNAMICS, 2005, 39 (03) :223-230

[9] Optimized smoothing of gravity recovery and climate experiment (GRACE) time-variable gravity observations [J].

Chen, J. L. ;

Wilson, C. R. ;

Seo, K. -W. .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2006, 111 (B6)

[10]

CHENG M, 2007, 05 GRACE

← 1 2 3 4 5 →