Newly Released GPCP Version 3.2 Global Precipitation Datasets at NASA GES DISC

The Global Precipitation Climatology Project (GPCP) is the precipitation component of an internationally coordinated set of (mainly)
satellite-based global products dealing with the Earth's water and energy cycles, under the auspices of the Global Water and Energy
Experiment (GEWEX) Data and Assessment Panel (GDAP) of the World Climate Research Program. As the follow-on to the GPCP
Version 2.X products, GPCP Version 3 (GPCP V3.2) seeks to continue the production of long, homogeneous precipitation record
using modern input and calibration datasets.

The GPCP V3.2 provides globally complete analyses of surface precipitation on a 0.5°x 0.5° latitude/longitude grid at both
monthly and daily intervals, respectively covering 1983 to the present and June 2000 to the present. New data fields have been
introduced to better characterize the precipitation, particularly including an estimate of the fraction of the precipitation that is liquid
(rain) in both the Monthly and Daily, and a Quality Index for the Monthly. Compared to the operational GPCP V2.3 Monthly, the
V3.2 Monthly provides a more reasonable climatology in the Southern Ocean, and increases the global average precipitation by
about 4.46%, which is in line with recommendations of recent assessments. However, the two versions have comparable global and
regional trends for 1983-2020. Compared to the operational One-Degree Daily (Version 1.3) product, the V3.2 Daily better
represents the histogram of precipitation rates, particularly at high values.

In this presentation, we will present the latest GPCP V3.2 daily and monthly datasets archived and distributed at NASA Goddard
Earth Sciences (GES) Data and Information Services Center (DISC) along with examples from NASA Giovanni.