Mass balance and mass loss acceleration of the Greenland ice sheet (2002 - 2011) from GRACE gravity data

Joodaki, Gholamreza; Nahavandchi, Hossein

doi:10.2478/v10156-011-0032-9

Cited by 2 publications

(3 citation statements)

References 25 publications

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“…The change of ice sheet mass in the whole study area slowly increases between October and April, but decreases between May and September, indicating that the ice sheet mass starts to decrease from May and increase from October. This conclusion is consistent with other scholars, but there are still some differences with regional changes, mainly due to different factors in different regions [22,23,32].…”

Section: Spatial Change Analysissupporting

confidence: 92%

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Analysis of the Spatiotemporal Changes of Ice Sheet Mass and Driving Factors in Greenland

et al. 2019

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With the warming of the global climate, the mass loss of the Greenland ice sheet is intensifying, having a profound impact on the rising of the global sea level. Here, we used Gravity Recovery and Climate Experiment (GRACE) RL06 data to retrieve the time series variations of ice sheet mass in Greenland from January 2003 to December 2015. Meanwhile, the spatial changes of ice sheet mass and its relationship with land surface temperature are studied by means of Theil–Sen median trend analysis, the Mann–Kendall (MK) test, empirical orthogonal function (EOF) analysis, and wavelet transform analysis. The results showed: (1) in terms of time, we found that the total mass of ice sheet decreases steadily at a speed of −195 ± 21 Gt/yr and an acceleration of −11 ± 2 Gt/yr2 from 2003 to 2015. This mass loss was relatively stable in the two years after 2012, and then continued a decreasing trend; (2) in terms of space, the mass loss areas of the Greenland ice sheet mainly concentrates in the southeastern, southwestern, and northwestern regions, and the southeastern region mass losses have a maximum rate of more than 27 cm/yr (equivalent water height), while the northeastern region show a minimum rate of less than 3 cm/yr, showing significant changes as a whole. In addition, using spatial distribution and the time coefficients of the first two models obtained by EOF decomposition, ice sheet quality in the southeastern and northwestern regions of Greenland show different significant changes in different periods from 2003 to 2015, while the other regions showed relatively stable changes; (3) in terms of driving factors temperature, there is an anti-phase relationship between ice sheet mass change and land surface temperature by the mean XWT-based semblance value of −0.34 in a significant oscillation period variation of 12 months. Meanwhile, XWT-based semblance values have the largest relative change in 2005 and 2012, and the smallest relative change in 2009 and 2010, indicating that the influence of land surface temperature on ice sheet mass significantly varies in different years.

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Section: Spatial Change Analysissupporting

confidence: 92%

“…Finally, we found that the 2 dj AR for the linear model is 0.9713, which is smaller than the 0.9763 value of the quadratic one. The result agrees with those of other researchers[27,32,64].…”

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confidence: 94%

Analysis of the Spatiotemporal Changes of Ice Sheet Mass and Driving Factors in Greenland

et al. 2019

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“…The data that will be used in this study are GRACE level 2, mass concentration, which is GRACE level 3 and TRMM data as comparison data. The study area will be determined to be the division of Indonesia into grids per 10°, this is done to speed up calculations and must be done before processing the GRACE level 2 satellite data which is in the form of a spherical harmonic coefficient (Joodaki, 2014). The harmonic coefficient in question shows the integral mass given a symbol lm C and lm S (Torge, 1991).…”

Section: Methodsmentioning

confidence: 99%

Variability of Equivalent Water Height (Ewh) in Indonesia During 14 Years of Grace Gravity Satellite Mission

Rahayu,

Anjasmara

2024

Geodesy and Cartography

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GRACE Satellite (Gravity Recovery and Climate Experiment) is a gravity monitoring satellite, that is very sensitive to mass changes, especially the signals that produce by redistribution of water masses. Data from this satellite can be used to observe water distribution in the form of spherical harmonic coefficients. Water mass variations are presented as Equivalent Water Height (EWH). The results of GRACE processing showed that the largest EWH was 27.298 cm in January 2015 and the smallest EWH was 29.816 cm in June 2004 in Sumatera Island. The positive trend occurred in Sumatra island and the negative trend occurred in eastern Indonesia. Generally, the trend of Indonesian rainfall throughout 2002 to 2016 was constant. However, there was a change in seasonal patterns in 2014. This research also use Mascon data from GRACE satellite to determine the radius of the gaussian filter and TRMM satellite’s data to observe rainfall data to be compared with the EWH variability from GRACE.

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Mass balance and mass loss acceleration of the Greenland ice sheet (2002 - 2011) from GRACE gravity data

Cited by 2 publications

References 25 publications

Analysis of the Spatiotemporal Changes of Ice Sheet Mass and Driving Factors in Greenland

Analysis of the Spatiotemporal Changes of Ice Sheet Mass and Driving Factors in Greenland

Variability of Equivalent Water Height (Ewh) in Indonesia During 14 Years of Grace Gravity Satellite Mission

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