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C.King April 27, 2016 |
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RADS satellite altimeter data for ECCO v4 (LLC90) assimilation |
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RADS (Radar Altimeter Database System project; Scharroo et al 2013) |
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is part of NEONET (Netherlands Earth Observation NETwork), for exploitation |
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of remote-sensing expertise and data. |
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DEOS (The Delft Institute for Earth-Oriented Space Research) |
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has built a data base that contains validated and cross-calibrated altimeter |
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data products that are consistent in accuracy, format, correction and |
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reference system parameters. http://rads.tudelft.nl |
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The following corrections and flags were applied: |
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CNES GDR-E orbital altitude [m] 425 |
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Ku-band range corrected for instr. effects 601 |
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ECMWF dry tropospheric correction [m] 701 |
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radiometer wet tropospheric correction [m] 801 |
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smoothed dual-frequency ionospheric correct 903 |
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static inverse barometer correction [m] 1002 |
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solid earth tide [m] 1101 |
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GOT4.10 ocean tide [m] 1222 |
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GOT4.10 load tide [m] 1322 |
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pole tide [m] 1401 |
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CLS non-parametric sea state bias [m] 1502 |
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||DTU10 mean sea surface height [m] 1614 topex,jason1,ers,env,gfo |
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||DTU15 mean sea surface height [m] 1618 jason2,cryosat2,saral |
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Ku-band significant wave height [m] 1701 |
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Ku-band backscatter coefficient [dB] 1801 |
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std dev of Ku-band range [m] 2002 |
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number of valid Ku-band measurements (MLE3) 2101 |
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flag word 2601 |
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std dev of Ku-band significant wave height 2802 |
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std dev of Ku-band backscatter coefficient 2902 |
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off-nadir pointing angle squared from wavef 3002 |
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reference frame offset [m] 3801 |
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sea ice concentration [%] 4701 |
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The along-track sea surface height anomaly fields have been |
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daily bin-averaged onto the ECCO v4 model grid, |
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using gcmfaces (see Forget et al 2015), and organized by year. |
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Outliers have been removed using a standard deviation scheme (see Forget and Ponte 2015). |
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Missing values and land are masked with -9999. |
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The names of this dataset are: |
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RADS_TJ_mar2016_YYYY where YYYY=1992:2015 Topex, Jason |
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RADS_GFO_C2_mar2016_YYYY GFO, Cryosat-2 |
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RADS_ERS_ENV_SA_mar2016_YYYY ERS, ENV, Saral |
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References: |
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Scharroo, R., E. W. Leuliette, J. L. Lillibridge, D. Byrne, M. C. Naeije, and G. T. Mitchum, |
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RADS: Consistent multi-mission products, in Proc. of the Symposium on 20 Years of Progress in |
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Radar Altimetry, Venice, 20-28 September 2012, Eur. Space Agency Spec. Publ., ESA SP-710, p. 4 pp., 2013. |
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Forget, G., J.-M. Campin, P. Heimbach, C. N. Hill, R. M. Ponte, and C. Wunsch, 2015: |
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ECCO version 4: an integrated framework for non-linear inverse modeling and global ocean |
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state estimation. Geoscientific Model Development, 8, 3071-3104, doi:10.5194/gmd-8-3071-2015 |
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Forget, G. and R. Ponte, 2015: The partition of regional sea level variability. Progress |
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in Oceanography, (137), 173–195, doi:10.1016/j.pocean.2015.06.002 |
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Contact us: |
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ecco-support@mit.edu |
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(please subscribe via http://mailman.mit.edu/mailman/listinfo/ecco-support) |
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