About the Project

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.

Currently available global gridded passive microwave data sets serve a diverse community of hundreds of data users, but do 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 are based have been reprocessed as Fundamental CDRs (FCDRs) with improved calibration statistics. There is now 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 are reprocessing the gridded data sets, using the most mature available Level 2 satellite passive microwave records from 1978 to the present. We will reprocess the complete data record from SMMR, SSM/I-SSMIS and AMSR-E in a single, enhanced-resolution gridded passive microwave ESDR. The ESDR will make use of the latest improvements to the Level 2 SSM/I- SSMIS and AMSR-E data record. The new, gridded ESDR will satisfy the needs of current and future users who require a reliable, consistent, gridded time series of microwave radiometer data.