We are funded by the NASA MEaSUREs program to produce an improved, enhanced-resolution, gridded passive microwave ESDR for monitoring cryospheric and hydrologic time series.
Previously available global gridded passive microwave data sets served a diverse community of hundreds of data users, but did not meet many requirements of modern ESDRs or CDRs, most notably in the areas of intersensor calibration and consistent processing methods. The original gridding techniques were relatively primitive and were produced on grids that are not easily accommodated in modern software packages. Further, since the time that the first Level 3 data sets were developed, the Level 2 passive microwave data on which they were based have been reprocessed as Fundamental CDRs (FCDRs) with improved calibration statistics. Our project addressed a great need to regenerate gridded Level 3 products using improved techniques from these modern Level 2 FCDRs.
Using validated, state-of-the-art interpolation methods, we have reprocessed the gridded data sets, using the most mature available Level 2 satellite passive microwave records from 1978 to the present. We have produced the complete data record from SMMR, SSM/I-SSMIS and AMSR-E in a single, enhanced-resolution gridded passive microwave ESDR. The MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 (CETB) ESDR uses the latest improvements to the Level 2 SSM/I- SSMIS and AMSR-E data record. Early adopters and current users are providing favorable feedback on how the the new, gridded ESDR is providing new insights in many applications.