Author Archives: pragwater

About pragwater

Eric Harmsen is a professor at the University of Puerto Rico-Mayaguez Campus, Dept. of Agricultural and Biosystems Engineering. He teaches courses in agricultural hydrology, agroclimatology and irrigation. His research interests include: Measurement and modeling all components of the hydrologic cycle, remote sensing of water and energy balance in the Tropics, and agroclimatology.


Today a new weather station was installed in the Finca Alzamora, UPRM campus, Mayaguez Puerto Rico.  Data from the weather station are available from two websites:  WeatherLink  or WeatherUnderground.  The WeatherUnderground site allows you to download archived data in a … Continue reading

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New Book Series on Micro Irrigation just Published

Research Advances in Sustainable Micro Irrigation Click to download pdf flyers Vol. 1. Sustainable Micro Irrigation Principles and Practices Vol. 2.  Sustainable Practices in Surface and Subsurface Micro Irrigation Vol. 3. Sustainable Micro Irrigation Management for Trees and Vines Vol. … Continue reading

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Leverage Points For Improving Global Food Security And The Environment

We Have Enough Land To Feed Our Growing Population, We Just Have To Use It Right, Study Finds Click here for summary of study Click here for journal article in Science  

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PRAGWATER now providing daily reference evapotranspiration for St. Croix, USVI

Daily reference evapotranspiration (ETo) is now available for St. Croix (USVI) at the following link: Northern Caribbean ETo .  The link also includes ETo data for Puerto Rico, Hispaniola and Jamaica. Yesterday’s Reference Evapotranspiration in St. Croix The following links will … Continue reading

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Syria: An example of climate change-induced war

Trying To Follow What Is Going On In Syria And Why? This Comic Will Get You There In 5 Minutes. UPWORTHY

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This Invention Will Change The World, Just Watch .    

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Climate Change Impacts in the United States – final report

Download report pdf                  Go to Report website  

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Nigerian girl describes kidnapping, among 50 who escaped

Originally posted on theGrio:
LAGOS, Nigeria (AP) — The girls in the school dorm heard the sound of gunshots from a nearby town. So when armed men in uniforms burst in and promised to rescue them, at first they were relieved. “Don’t…

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What is more horrible? #BringBackOurGirls

Originally posted on Rhea Harmsen: On a scale of one to ten, what is more horrible than the kidnapping of little girls to be sold into sexual slavery in order to scare folks into not sending girls to school?…

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Posibles Efectos del Cambio Climático en los Insectos – Dra. Rosa Amelia Franqui

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