edu.ucar.opensky::articles:21724 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:59:49.803130 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d78d002n https://doi.org/10.5067/MEASURES/SSMI-SSMIS/DATA301 https Related Dataset #1 RSS SSM/I and SSMIS Ocean Product Grids netCDF Data Collection Version 7 Construction and uncertainty estimation of a satellite-derived total precipitable water data record over the world's oceans 2018-05-01T00:00:00Z publication https://n2t.org/ark:/85065/d78d002n https://doi.org/10.1002/2018EA000363 Mears, C. A. author Smith, D. K. author Ricciardulli, L. author Wang, J. author Huelsing, Hannah author Wentz, F. J. author UCAR/NCAR - Library publisher Measurements of total precipitable water (TPW) from 11 satellite-borne microwave imaging radiometers are intercalibrated and merged into a single gridded monthly data set starting in January 1988 and continuing to the present. The resulting data set shows a global mean, ocean-only trend in TPW of 0.436 kg/m(2) per decade (1.49% per decade), and a trend in the deep tropics (20 degrees S-20 degrees N) of 0.629 kg/m(2) per decade (1.503% per decade). The uncertainty in the merged TPW results is analyzed on multiple time and distance scales using a Monte Carlo approach. This analysis results in an uncertainty ensemble that can be used to evaluate the effects of construction uncertainty on any subsequent application of the data set. We compare the merged data set with measurements of TPW from ground-based Global Navigation Satellite System sensors on small islands. These comparisons show no systematic long-term drifts in the differences, and the observed differences were largely explained by our uncertainty analysis. As an example of the use of the uncertainty ensemble, we evaluate the increase in TPW over the Gulf of Mexico during summer months over 1988-2017. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2018 Author(s). This work is licensed under a Creative Commons Attribution-NonCommerical-NoDerivatives 4.0 International license. None eng geoscientificInformation