3ed26d18-nca3-grace-r201307-process

From the time-variable gravity, calculated the corresponding surface mass changes.

The spherical harmonic Stokes coefficients of the monthly time-variable gravity observations (01/2003 - 12/2012) from GRACE were converted into surface-mass change, in units of equivalent-water-height, following methods described in [Wahr et al., 1998], with data augmentations and corrections (i.e., Satellite-Laser–Ranging for C20) described in [Velicogna and Wahr, 2013]. A spatial smoothing with a Gaussian filter halfwidth of 300km was applied. Glacial isostatic adjustment (GIA) corrections for Greenland were applied based on [A and Wahr, 2013], and for Antarctica based on [Ivins et al., 2013]. The linear least-squares trend was estimated, fitting constant, trend, annual, semi-annual and tidal alias terms [Ray and Luthke, 2006] simultaneously.

The duration of this activity was 16 hours.

Output artifacts generated by this activity :

Plotting Routine:
gis_ais_nac_plot.m

Data Files:
GSM-2_2003001-2003031_0029_JPLEM_0000_0005.README.txt
GSM-2_2003001-2003031_0029_JPLEM_0000_0005.gz
GSM-2_2003032-2003059_0025_JPLEM_0000_0005.README.txt
GSM-2_2003032-2003059_0025_JPLEM_0000_0005.gz
GSM-2_2003060-2003090_0028_JPLEM_0000_0005.README.txt
GSM-2_2003060-2003090_0028_JPLEM_0000_0005.gz
GSM-2_2003091-2003120_0028_JPLEM_0000_0005.README.txt
GSM-2_2003091-2003120_0028_JPLEM_0000_0005.gz
GSM-2_2003121-2003141_0021_JPLEM_0000_0005.README.txt
GSM-2_2003121-2003141_0021_JPLEM_0000_0005.gz
GSM-2_2003182-2003212_0031_JPLEM_0000_0005.README.txt
GSM-2_2003182-2003212_0031_JPLEM_0000_0005.gz
GSM-2_2003213-2003243_0030_JPLEM_0000_0005.README.txt
GSM-2_2003213-2003243_0030_JPLEM_0000_0005.gz
GSM-2_2003244-2003273_0030_JPLEM_0000_0005.README.txt
GSM-2_2003244-2003273_0030_JPLEM_0000_0005.gz
GSM-2_2003274-2003304_0029_JPLEM_0000_0005.README.txt
GSM-2_2003274-2003304_0029_JPLEM_0000_0005.gz
GSM-2_2003305-2003334_0029_JPLEM_0000_0005.README.txt
GSM-2_2003305-2003334_0029_JPLEM_0000_0005.gz
GSM-2_2003335-2003365_0030_JPLEM_0000_0005.README.txt
GSM-2_2003335-2003365_0030_JPLEM_0000_0005.gz
GSM-2_2004001-2004013_0013_JPLEM_0000_0005.gz
GSM-2_2004035-2004060_0026_JPLEM_0000_0005.gz
GSM-2_2004061-2004091_0030_JPLEM_0000_0005.gz
GSM-2_2004092-2004121_0027_JPLEM_0000_0005.gz
GSM-2_2004122-2004152_0030_JPLEM_0000_0005.gz
GSM-2_2004153-2004182_0029_JPLEM_0000_0005.gz
GSM-2_2004183-2004213_0031_JPLEM_0000_0005.gz
GSM-2_2004214-2004244_0030_JPLEM_0000_0005.gz
GSM-2_2004245-2004274_0030_JPLEM_0000_0005.gz
GSM-2_2004275-2004305_0031_JPLEM_0000_0005.gz
GSM-2_2004306-2004335_0030_JPLEM_0000_0005.gz
GSM-2_2004336-2004366_0027_JPLEM_0000_0005.gz
GSM-2_2005001-2005031_0031_JPLEM_0000_0005.gz
GSM-2_2005032-2005059_0027_JPLEM_0000_0005.gz
GSM-2_2005060-2005090_0027_JPLEM_0000_0005.gz
GSM-2_2005091-2005120_0030_JPLEM_0000_0005.gz
GSM-2_2005121-2005151_0031_JPLEM_0000_0005.gz
GSM-2_2005152-2005181_0029_JPLEM_0000_0005.gz
GSM-2_2005182-2005212_0031_JPLEM_0000_0005.gz
GSM-2_2005213-2005243_0030_JPLEM_0000_0005.gz
GSM-2_2005244-2005273_0030_JPLEM_0000_0005.gz
GSM-2_2005274-2005304_0031_JPLEM_0000_0005.gz
GSM-2_2005305-2005334_0030_JPLEM_0000_0005.gz
GSM-2_2005335-2005365_0026_JPLEM_0000_0005.gz
GSM-2_2006001-2006031_0031_JPLEM_0000_0005.gz
GSM-2_2006032-2006059_0028_JPLEM_0000_0005.gz
GSM-2_2006060-2006090_0030_JPLEM_0000_0005.gz
GSM-2_2006091-2006120_0030_JPLEM_0000_0005.gz
GSM-2_2006121-2006151_0031_JPLEM_0000_0005.gz
GSM-2_2006152-2006181_0027_JPLEM_0000_0005.gz
GSM-2_2006182-2006212_0031_JPLEM_0000_0005.gz
GSM-2_2006213-2006243_0031_JPLEM_0000_0005.gz
GSM-2_2006244-2006273_0029_JPLEM_0000_0005.gz
GSM-2_2006274-2006304_0030_JPLEM_0000_0005.gz
GSM-2_2006305-2006334_0030_JPLEM_0000_0005.gz
GSM-2_2006335-2006365_0029_JPLEM_0000_0005.gz
GSM-2_2007001-2007031_0027_JPLEM_0000_0005.gz
GSM-2_2007032-2007059_0028_JPLEM_0000_0005.gz
GSM-2_2007060-2007090_0031_JPLEM_0000_0005.gz
GSM-2_2007091-2007120_0030_JPLEM_0000_0005.gz
GSM-2_2007121-2007151_0031_JPLEM_0000_0005.gz
GSM-2_2007152-2007181_0026_JPLEM_0000_0005.gz
GSM-2_2007182-2007212_0028_JPLEM_0000_0005.gz
GSM-2_2007213-2007243_0025_JPLEM_0000_0005.gz
GSM-2_2007244-2007273_0030_JPLEM_0000_0005.gz
GSM-2_2007274-2007304_0028_JPLEM_0000_0005.gz
GSM-2_2007305-2007334_0026_JPLEM_0000_0005.gz
GSM-2_2007335-2007365_0031_JPLEM_0000_0005.gz
GSM-2_2008001-2008031_0031_JPLEM_0000_0005.gz
GSM-2_2008032-2008060_0029_JPLEM_0000_0005.gz
GSM-2_2008061-2008091_0031_JPLEM_0000_0005.gz
GSM-2_2008092-2008121_0026_JPLEM_0000_0005.gz
GSM-2_2008122-2008152_0031_JPLEM_0000_0005.gz
GSM-2_2008153-2008182_0030_JPLEM_0000_0005.gz
GSM-2_2008183-2008213_0031_JPLEM_0000_0005.gz
GSM-2_2008214-2008244_0031_JPLEM_0000_0005.gz
GSM-2_2008245-2008274_0029_JPLEM_0000_0005.gz
GSM-2_2008275-2008305_0031_JPLEM_0000_0005.gz
GSM-2_2008306-2008335_0030_JPLEM_0000_0005.gz
GSM-2_2008336-2008366_0031_JPLEM_0000_0005.gz
GSM-2_2009001-2009031_0031_JPLEM_0000_0005.gz
GSM-2_2009032-2009059_0028_JPLEM_0000_0005.gz
GSM-2_2009060-2009090_0029_JPLEM_0000_0005.gz
GSM-2_2009091-2009120_0029_JPLEM_0000_0005.gz
GSM-2_2009121-2009151_0027_JPLEM_0000_0005.gz
GSM-2_2009152-2009181_0027_JPLEM_0000_0005.gz
GSM-2_2009182-2009212_0027_JPLEM_0000_0005.gz
GSM-2_2009213-2009243_0029_JPLEM_0000_0005.gz
GSM-2_2009244-2009273_0030_JPLEM_0000_0005.gz
GSM-2_2009274-2009304_0030_JPLEM_0000_0005.gz
GSM-2_2009305-2009334_0030_JPLEM_0000_0005.gz
GSM-2_2009335-2009365_0030_JPLEM_0000_0005.gz
GSM-2_2010001-2010031_0031_JPLEM_0000_0005.gz
GSM-2_2010032-2010059_0028_JPLEM_0000_0005.gz
GSM-2_2010060-2010090_0023_JPLEM_0000_0005.gz
GSM-2_2010091-2010120_0030_JPLEM_0000_0005.gz
GSM-2_2010121-2010151_0030_JPLEM_0000_0005.gz
GSM-2_2010152-2010181_0020_JPLEM_0000_0005.gz
GSM-2_2010182-2010212_0023_JPLEM_0000_0005.gz
GSM-2_2010213-2010243_0031_JPLEM_0000_0005.gz
GSM-2_2010244-2010273_0030_JPLEM_0000_0005.gz
GSM-2_2010274-2010304_0028_JPLEM_0000_0005.gz
GSM-2_2010305-2010334_0030_JPLEM_0000_0005.gz
GSM-2_2010335-2010365_0023_JPLEM_0000_0005.gz
GSM-2_2011039-2011059_0021_JPLEM_0000_0005.README.txt
GSM-2_2011039-2011059_0021_JPLEM_0000_0005.gz
GSM-2_2011060-2011090_0031_JPLEM_0000_0005.README.txt
GSM-2_2011060-2011090_0031_JPLEM_0000_0005.gz
GSM-2_2011091-2011120_0030_JPLEM_0000_0005.README.txt
GSM-2_2011091-2011120_0030_JPLEM_0000_0005.gz
GSM-2_2011121-2011151_0031_JPLEM_0000_0005.README.txt
GSM-2_2011121-2011151_0031_JPLEM_0000_0005.gz
GSM-2_2011188-2011212_0024_JPLEM_0000_0005.README.txt
GSM-2_2011188-2011212_0024_JPLEM_0000_0005.gz
GSM-2_2011213-2011243_0030_JPLEM_0000_0005.README.txt
GSM-2_2011213-2011243_0030_JPLEM_0000_0005.gz
GSM-2_2011244-2011273_0030_JPLEM_0000_0005.README.txt
GSM-2_2011244-2011273_0030_JPLEM_0000_0005.gz
GSM-2_2011274-2011304_0031_JPLEM_0000_0005.README.txt
GSM-2_2011274-2011304_0031_JPLEM_0000_0005.gz
GSM-2_2011290-2011320_0031_JPLEM_0000_0005.README.txt
GSM-2_2011290-2011320_0031_JPLEM_0000_0005.gz
GSM-2_2011353-2012015_0028_JPLEM_0000_0005.README.txt
GSM-2_2011353-2012015_0028_JPLEM_0000_0005.gz
GSM-2_2012001-2012031_0031_JPLEM_0000_0005.README.txt
GSM-2_2012001-2012031_0031_JPLEM_0000_0005.gz
GSM-2_2012032-2012060_0029_JPLEM_0000_0005.README.txt
GSM-2_2012032-2012060_0029_JPLEM_0000_0005.gz
GSM-2_2012061-2012091_0031_JPLEM_0000_0005.README.txt
GSM-2_2012061-2012091_0031_JPLEM_0000_0005.gz
GSM-2_2012092-2012110_0019_JPLEM_0000_0005.README.txt
GSM-2_2012092-2012110_0019_JPLEM_0000_0005.gz
GSM-2_2012153-2012182_0030_JPLEM_0000_0005.README.txt
GSM-2_2012153-2012182_0030_JPLEM_0000_0005.gz
GSM-2_2012183-2012213_0031_JPLEM_0000_0005.README.txt
GSM-2_2012183-2012213_0031_JPLEM_0000_0005.gz
GSM-2_2012214-2012244_0030_JPLEM_0000_0005.README.txt
GSM-2_2012214-2012244_0030_JPLEM_0000_0005.gz
GSM-2_2012245-2012268_0024_JPLEM_0000_0005.README.txt
GSM-2_2012245-2012268_0024_JPLEM_0000_0005.gz
GSM-2_2012314-2012335_0022_JPLEM_0000_0005.README.txt
GSM-2_2012314-2012335_0022_JPLEM_0000_0005.gz
GSM-2_2012336-2012366_0029_JPLEM_0000_0005.README.txt
GSM-2_2012336-2012366_0029_JPLEM_0000_0005.gz

This activity resulted in the following :

• image 3ed26d18-8183-4a06-bc17-c7479e2ae83d was derived from dataset GRACE Static Field Geopotential Coefficients JPL Release 5.0 GSM

Computing environment : MAC OSX 10.6.8

Software used : MATLAB R2012a

Visualization software used : MATLAB

Notes : MATLAB