"In meteorology, precipitation (also known as hydrometeor) is any product of the condensation of atmospheric water vapor that is deposited on the earth's surface. It occurs when the atmosphere (being a large gaseous solution) becomes saturated with water vapors and the water condenses and falls out of solution (i.e., precipitates) Air becomes saturated via two processes, Cooling and Adding Moisture. Precipitation that reaches the surface of the earth can occur in many different forms, including rain, freezing rain, snow, sleet, and hail." (European Environmental Agency, 2019)
Global Precipitation Mission: Improved, accurate and timely global precipitation information
Continuous and reliable global precipitation information is crucial for myriad of weather, climate and hydrological applications. The importance of precipitation in the form of rain, hail, sleet, snow etc. is known to science and clear to a layman. However, it’s quite tricky to measure past precipitation trends or predicting accurate future forecasts. There are three main categories of precipitation data sets available: ground based, satellite-based and blended products of ground and space data (Climate Data Guide, 2014).
Space technologies for drought monitoring and management
The impacts of climate change are ever more apparent. The frequency and scale of devastation and destruction of weather hazards are on an increasing trend. According to the latest Intergovernmental Panel on Climate Change Report (IPCC, 2021) climate change is intensifying the water cycle. This will cause more intense droughts in many regions. Moreover, water-related extremes impact the quality of life disproportionately strong. Drought accounts for 25% of all losses from weather-related disasters in the United States of America (Hayes et al., 2012).
Capacity Building and Training Material
ARSET - Water Resource Management Using NASA Earth Science Data
This online course covers precipitation (rainfall and snow fraction), soil moisture, evapotranspiration, runoff and streamflow, groundwater, and lake level heights. Participants are introduced to a number of NASA data products.
Participants will be able to use NASA remote sensing observations and land-atmosphere models to:
ARSET - Introduction to Global Precipitation Measurement (GPM) Data and Applications
ARSET - Applications of GPM IMERG Reanalysis for Assessing Extreme Dry and Wet Periods
It is well recognized that long-term precipitation measurements are necessary for understanding and monitoring regional precipitation characteristics. This includes characteristics crucial for monitoring water resources and hazards, like floods and droughts. TRMM was the first NASA mission dedicated to observing precipitation. It operated from November 1997 to April 2015. The Global Precipitation Measurement (GPM) Mission launched in February 2014 as a follow-on to TRMM.
Local Perspectives Case Studies
Women and their everyday lives related to Water: Yamileth Campos-Garita, Costa Rica
Project / Mission / Initiative / Community Portal
GPM/DPR : Global Precipitation Measurement/Dual-frequency Precipitation Radar
The 21st century is often called "the century of water." Water is an essential element of the Earth's environment and is indispensable for our life and economic activities. Many places in the world now face water problems, such as water shortages and floods, which can cause food shortages, epidemic diseases, and so on. In addition to these problems, global warming and climate change affect the global water cycle and result in abnormal weather, such as frequent heavy rains and droughts.
PhD Candiate at Tonji University
Jiayue Gu is a doctoral candidate at the Department of Hydraulic Engineering, Tongji University in China. She graduated from Hohai University with a bachelor’s degree in 2017. She researches in the field of hydrological response under climate change. She researched rainfall prediction, based on a stacking ensemble model and future rainfall changes under different shared socio-economic pathways (SSPs), based on CMIP6 in the Taihu basin, China. She is also a volunteer at China Clean Air Policy Partnership (CCAPP).