| 1 |
C.King April 27, 2016 |
| 2 |
RADS satellite altimeter data for ECCO v4 (LLC90) assimilation |
| 3 |
|
| 4 |
RADS (Radar Altimeter Database System project; Scharroo et al 2013) |
| 5 |
is part of NEONET (Netherlands Earth Observation NETwork), for exploitation |
| 6 |
of remote-sensing expertise and data. |
| 7 |
DEOS (The Delft Institute for Earth-Oriented Space Research) |
| 8 |
has built a data base that contains validated and cross-calibrated altimeter |
| 9 |
data products that are consistent in accuracy, format, correction and |
| 10 |
reference system parameters. http://rads.tudelft.nl |
| 11 |
|
| 12 |
The following corrections and flags were applied: |
| 13 |
CNES GDR-E orbital altitude [m] 425 |
| 14 |
Ku-band range corrected for instr. effects 601 |
| 15 |
ECMWF dry tropospheric correction [m] 701 |
| 16 |
radiometer wet tropospheric correction [m] 801 |
| 17 |
smoothed dual-frequency ionospheric correct 903 |
| 18 |
static inverse barometer correction [m] 1002 |
| 19 |
solid earth tide [m] 1101 |
| 20 |
GOT4.10 ocean tide [m] 1222 |
| 21 |
GOT4.10 load tide [m] 1322 |
| 22 |
pole tide [m] 1401 |
| 23 |
CLS non-parametric sea state bias [m] 1502 |
| 24 |
||DTU10 mean sea surface height [m] 1614 topex,jason1,ers,env,gfo |
| 25 |
||DTU15 mean sea surface height [m] 1618 jason2,cryosat2,saral |
| 26 |
Ku-band significant wave height [m] 1701 |
| 27 |
Ku-band backscatter coefficient [dB] 1801 |
| 28 |
std dev of Ku-band range [m] 2002 |
| 29 |
number of valid Ku-band measurements (MLE3) 2101 |
| 30 |
flag word 2601 |
| 31 |
std dev of Ku-band significant wave height 2802 |
| 32 |
std dev of Ku-band backscatter coefficient 2902 |
| 33 |
off-nadir pointing angle squared from wavef 3002 |
| 34 |
reference frame offset [m] 3801 |
| 35 |
sea ice concentration [%] 4701 |
| 36 |
|
| 37 |
The along-track sea surface height anomaly fields have been |
| 38 |
daily bin-averaged onto the ECCO v4 model grid, |
| 39 |
using gcmfaces (see Forget et al 2015), and organized by year. |
| 40 |
Outliers have been removed using a standard deviation scheme (see Forget and Ponte 2015). |
| 41 |
Missing values and land are masked with -9999. |
| 42 |
|
| 43 |
The codes that implement the above data processing can be found in |
| 44 |
http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/ecco_utils/input_ecco_processing/code_sla/ |
| 45 |
|
| 46 |
The names of this dataset are: |
| 47 |
RADS_TJ_mar2016_YYYY where YYYY=1992:2015 Topex, Jason |
| 48 |
RADS_GFO_C2_mar2016_YYYY GFO, Cryosat-2 |
| 49 |
RADS_ERS_ENV_SA_mar2016_YYYY ERS, ENV, Saral |
| 50 |
|
| 51 |
References: |
| 52 |
Scharroo, R., E. W. Leuliette, J. L. Lillibridge, D. Byrne, M. C. Naeije, and G. T. Mitchum, |
| 53 |
RADS: Consistent multi-mission products, in Proc. of the Symposium on 20 Years of Progress in |
| 54 |
Radar Altimetry, Venice, 20-28 September 2012, Eur. Space Agency Spec. Publ., ESA SP-710, p. 4 pp., 2013. |
| 55 |
Forget, G., J.-M. Campin, P. Heimbach, C. N. Hill, R. M. Ponte, and C. Wunsch, 2015: |
| 56 |
ECCO version 4: an integrated framework for non-linear inverse modeling and global ocean |
| 57 |
state estimation. Geoscientific Model Development, 8, 3071-3104, doi:10.5194/gmd-8-3071-2015 |
| 58 |
Forget, G. and R. Ponte, 2015: The partition of regional sea level variability. Progress |
| 59 |
in Oceanography, (137), 173–195, doi:10.1016/j.pocean.2015.06.002 |
| 60 |
|
| 61 |
Contact us: |
| 62 |
ecco-support@mit.edu |
| 63 |
(please subscribe via http://mailman.mit.edu/mailman/listinfo/ecco-support) |
Parent Directory
| 
Revision Log
| 
Revision Graph