Relation between GRACE-derived surface mass variations and precipitation over Australia

Rieser, Daniel; Kühn, Michael; Pail, Roland; Anjasmara, Ira Mutiara; Awange, Joseph

doi:10.1080/08120099.2010.512645

“…Australia is generally arid with relatively small seasonal hydrological variations (Awange et al 2011). However, GRACE satellite gravity measurements still proved useful for estimating basin or large regional-scale TWS and GWS changes in Australia (e.g., Leblanc et al 2009;Rieser et al 2010;Awange et al 2011). The MDB experienced a severe drought, termed the Millennium Drought (2001van Dijk et al 2013), during which available in situ groundwater level measurements showed an alarming drop in groundwater storage in the southern MDB .…”

Section: Groundwater Depletion In Southern Murray-darling Basinmentioning

confidence: 99%

Groundwater Storage Changes: Present Status from GRACE Observations

Chen

¹

,

Famigliett

²

,

Scanlon

³

et al. 2015

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Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed.

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“…However, GRACE satellite gravity measurements still proved useful for estimating basin or large regional-scale TWS and GWS changes in Australia (e.g., Leblanc et al 2009;Rieser et al 2010;Awange et al 2011). The MDB experienced a severe drought, termed the Millennium Drought (2001van Dijk et al 2013), during which available in situ groundwater level measurements showed an alarming drop in groundwater storage in the southern MDB .…”

Section: Groundwater Depletion In Southern Murray-darling Basinmentioning

confidence: 99%

Groundwater Storage Changes: Present Status from GRACE Observations

Chen

¹

,

Famigliett

²

,

Scanlon

³

et al. 2016

Space Sciences Series of ISSI

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Satellite gravity measurements from the Gravity Recovery and Climate Experiment (GRACE) provide quantitative measurement of terrestrial water storage (TWS) changes with unprecedented accuracy. Combining GRACE-observed TWS changes and independent estimates of water change in soil and snow and surface reservoirs offers a means for estimating groundwater storage change. Since its launch in March 2002, GRACE time-variable gravity data have been successfully used to quantify long-term groundwater storage changes in different regions over the world, including northwest India, the High Plains Aquifer and the Central Valley in the USA, the North China Plain, Middle East, and southern Murray-Darling Basin in Australia, where groundwater storage has been significantly depleted in recent years (or decades). It is difficult to rely on in situ groundwater measurements for accurate quantification of large, regional-scale groundwater storage changes, especially at long timescales due to inadequate spatial and temporal coverage of in situ data and uncertainties in storage coefficients. The now nearly 13 years of GRACE gravity data provide a successful and unique complementary tool for monitoring and measuring groundwater changes on a global and regional basis. Despite the successful applications of GRACE in studying global groundwater storage change, there are still some major challenges limiting the application and interpretation of GRACE data. In this paper, we present an overview of GRACE applications in groundwater studies and discuss if and how the main challenges to using GRACE data can be addressed.

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“…A possible explanation for the low correlation coefficient is that the both signal are not in phase indicating an offset in time or the influence of one variable may be spread over several observations of the other variable. Rieser et al (2010) reported that precipitation generally precedes EWT, and it takes some time until the accumulated water from precipitation is monitored as gravity change by GRACE. However, instead of using cross correlation function to determine the phase difference between the annual signals, we can use the differencing the phases obtained for each data set separately (ibid).…”

Section: Resultsmentioning

confidence: 99%

Monitoring mass changes in the Volta River basin using GRACE satellite gravity and TRMM precipitation

Ferreira

¹

,

Gong

²

,

Andam-Akorful

³

2012

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GRACE satellite gravity data was used to estimate mass changes within the Volta River basin in West African for the period of January, 2005 to December, 2010. We also used the precipitation data from the Tropical Rainfall Measurement Mission (TRMM) to determine relative contributions source to the seasonal hydrological balance within the Volta River basin. We found out that the seasonal mass change tends to be detected by GRACE for periods from 1 month in the south to 4 months in the north of the basin after the rainfall events. The results suggested a significant gain in water storage in the basin at reference epoch 2007.5 and a dominant annual cycle for the period under consideration for both in the mass changes and rainfall time series. However, there was a low correlation between mass changes and rainfall implying that there must be other processes which cause mass changes without rainfall in the upstream of the Volta River basin. Keywords: Equivalent Water Thickness; Mass Transport; Water Storage.* Author to whom correspondence should be addressed Monitoring mass changes in the Volta River Basin usin GRACE... Bol. Ciênc. Geod., sec. Artigos, Curitiba, v. 18, n o 4, p.549-563, out-dez, 2012.5 5 0 RESUMO Dados da missão Gravity Recovery and Climate Exchange (GRACE) são usados para estimar mudanças em massa na bacia hidrográfica do Rio Volta na Africa Ocidental entre o período de janeiro de 2005 a dezembro de 2010. Empregou-se também os dados de precipitação do satélite Tropical Rainfall Measurement Mission (TRMM) para determinar a fonte de contribuições em relação ao balanço hidrológico sazonal na bacia do Rio Volta. Os resultados mostram que a mudança de massa sazonal tende a ser detectada pelos satélites da missão GRACE a partir de 1 mês, no sul e de 4 meses no norte da bacia após a precipitação. Os resultados sugerem um ganho significativo no armazenamento d'água na bacia para a época de referência 2007,5 e um ciclo anual predominante para o período considerado para mudanças em massa e precipitação. No entanto, notou-se uma baixa correlação entre as alterações da massa e precipitação o que implica que deve haver outros processos que causam mudanças em massa sem ocorrer precipitação para o montante da bacia do Rio Volta. Palavras-chave: Equivalente à Lâmina D'água; Transporte de Massa; Armazenamento D'água.

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Relation between GRACE-derived surface mass variations and precipitation over Australia

Cited by 57 publications

References 31 publications

Groundwater Storage Changes: Present Status from GRACE Observations

Groundwater Storage Changes: Present Status from GRACE Observations

Groundwater Storage Changes: Present Status from GRACE Observations

Monitoring mass changes in the Volta River basin using GRACE satellite gravity and TRMM precipitation

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