PDF《RSS SMAP Salinity:》

2 Q/C flag in the SMAP V2.0 release.11 Table 3: Absolute calibration of SMAP radiometer. Shown are the TA biases for the average of v-pol and h-pol.....12 Table 4: Global statistics: SSS SMAP C SSS ARGO monthly

1 o x1 o maps. Provided by T. Lee, JPL.17 RSS Technical Report

091316 4 1. RELEASE DATE 09/13/2016 2. DATA ACCESS ftp://ftp.remss.com/smap/ www.remss.com/missions/smap/ Contact: Thomas Meissner, [email protected]. 3. CITATION AND DOI As a condition of using these data, we require you to use the following citation: Meissner, T. and F. J. Wentz, 2016: Remote Sensing Systems SMAP Ocean Surface Salinities [Level 2C, Level

3 Running 8-day, Level

3 Monthly], Version 2.0 validated release. Remote Sensing Systems, Santa Rosa, CA, USA. Available online at www.remss.com/missions/smap, doi: 10.5067/SMP20-xxxxx. In the doi, the string xxxxx is: 1. 2SOCS for the L2C files. 2. 3SPCS for the L3 8-day running maps. 3. 3SMCS for the L3 monthly maps. Continued production of this data set requires support from NASA. We need you to be sure to cite these data when used in your publications so that we can demonstrate the value of this da- ta set to the scientific community. Please include the following statement in the acknowl- edgement section of your paper: SMAP salinity data are produced by Remote Sensing Systems and sponsored by the NASA Ocean Salinity Science Team. They are available at www.remss.com. 4. SUMMARY OF UPDATES FROM V1.0 1. Antenna Pattern Correction (APC): The spillover, or equivalently the matrix element AII in the APC matrix, was increased from 1.0929 (V1.0) to 1.1080 (V2.0). 2. The along-scan bias correction in V1.0 has been removed. 3. The emissivity of the mesh antenna was set to 0.01 for both V-pol and H-pol polarizations. 4. JPL has updated their thermal model for the physical temperature of the reflector. 5. In addition, an empirical adjustment to the thermal model has been introduced in order to mitigate observed zonal and seasonal biases in V1.0. 6. The correction for the reflected galaxy has been updated based on the SMAP for C aft look analysis. RSS Technical Report

091316 5 7. The land correction has been tuned to mitigate salty biases around the continents in the S hemisphere (E coast of S America, Australia) that were prevalent in V1.0. 8. The ancillary SST for V2.0 is taken from the Canadian Meteorological Center CMC. V1.0 had used Reynolds OI SST as ancillary SST input. 9. Level 2C (L2C) data files including all intermediate steps from TA to SSS are released includ- ing a L2 Q/C (quality control) flag. 10. The Level

3 data include averages for land fraction, sea ice fraction and SST. 5. PROCESSING SCHEDULE AND DISTRIBUTION RSS plans to batch process the V2.0 Level

3 SMAP salinities retroactively about once every month. Newly processed files (L2C files, L3 8-day running and monthly files) will be placed into the corresponding directories on the RSS FTP server once every month. All files will also b........