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Science 2 August 2002:
Vol. 297. no. 5582, pp. 831 - 833
DOI: 10.1126/science.1072188


Abstract
Full Text 		Detection of a Large-Scale Mass Redistribution in the Terrestrial System Since 1998
Christopher M. Cox and Benjamin F. Chao

Supporting Online Material

Supplemental Figure 1. J3 variation observed by SLR compared with the IB-corrected NCEP atmospheric J3. The atmospheric series (top) is on the left scale, and the observed series (bottom) is on the right scale. Sampling intervals are 90-days in 1979, 60-days from 1980 through 1991, and 30-day afterwards. No detrending has been performed. Units are 10-10.


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Supplemental Figure 2. Observed J3, (actually JODD) after subtraction of the IB corrected atmospheric signal and an empirical annual term, before (thin red line) and after an annual filter has been applied (heavy red line). Error bars are the observed J3 uncertainties. The black line is a weighted fit to the (unfiltered) data. The slope is 0.9x10-11 year-1. The offset green line is the J3 implied by the Greenland + W. Antarctic ice heights derived from ERS-1/2 altimetry data. Also shown are the J3 implied by the T/P uniform GSL change (blue, offset), and that considering the geographic distribution of the sea height changes (purple, offset). Neither sea height derived estimate includes steric effects. Units and sampling intervals are the same as Fig. S1.


Medium version | Full size version

Supplemental Figure 3. J4 variation observed by SLR compared with the IB-corrected NCEP atmospheric J4. The atmospheric series (top) is on the left scale, and the observed series (bottom) is on the right scale. Sampling intervals are 90-days in 1979, 60-days from 1980 through 1991, and 30-day afterwards. No detrending has been performed. Units are 10-10.


Medium version | Full size version

Supplemental Figure 4. Observed J4 after subtraction of the IB corrected atmospheric signal and an empirical annual term, before (thin red line) and after an annual filter has been applied (heavy red line). Error bars are the observed J4 uncertainties. The black line is a weighted fit to the (unfiltered) data. The slope is -0.1x10-11 year-1. The offset green line is the J4 implied by the Greenland + W. Antarctic ice heights derived from ERS-1/2 altimetry data. Also shown are the J4 implied by the T/P uniform GSL change (blue, offset), and that considering the geographic distribution of the sea height changes (purple, offset). Neither sea height derived estimate includes steric effects. Units and sampling intervals are the same as Fig. S3.


Medium version | Full size version

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