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.

Firma la Peticion a Favor de la Perspectiva de Genero


  A la att Gobernador de PR, Lic. Alejandro García Padilla y al Secretario de Educación, el Sr. Rafael Román Meléndez Necesitamos enseñanza sobre la equidad de género en Puerto Rico. La violencia contra las mujeres está en constante ascenso y … Continue reading

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Petition for Gender Equality Education in Puerto Rico Schools


To the Current Goverment Administration of Puerto Rico and the Department of Education: We need gender equality in Puerto Rico and Puerto Rican schools. Violence against women is at an all time high, in what seems to be a national crisis. … Continue reading

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Solar Photovoltaic Fact Book


Click here to download Solar Photovoltaic Fact Book in pdf format.

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Future World Water and Energy Challenge: Fact Book


Click Here for Fact Book in pdf format

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Good Explanation of Climate Change and Why is it so Cold this Winter?


Regarding the question, why are our winters so cold? As stated in the video, we will continue to get cold weather, but the locations receiving the coldest weather may move due to climate change. For example, here’s todays weather in … Continue reading

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Cool Google Map Area Calculator App


Online area calculator tool for Google maps.  In the example below, the area of Puerto Rico is calculated to be 8,939 km^2.  The official area is closer to 9,100 km^2.  I created the map below quickly (in about 1-minute), but … Continue reading

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UPRM Graduate Level Course: SPECIAL TOPIC IN AGRONOMY Satellite Remote Sensing: Applications in Agriculture Water Management in Puerto Rico


UPRM Graduate Level Course: SPECIAL TOPIC IN AGRONOMY Satellite Remote Sensing: Applications in Agriculture Water Management in Puerto Rico

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Pope Francis’ edict on climate change will anger deniers and US churches


Pope Francis: “An economic system centred on the god of money needs to plunder nature to sustain the frenetic rhythm of consumption that is inherent to it. “The system continues unchanged, since what dominates are the dynamics of an economy … Continue reading

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Climate Change 101 for Corrupt Politicians


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Downscaled Climate Data Projections for Puerto Rico Now Available


The Caribbean Landscape Conservation Cooperative (CLCC) has just announced the release of downscaled climate data projections (through 2099) for Puerto Rico.  This is a valuable resource, which will allow scientists from many fields to evaluate climate change impacts in their respective … Continue reading

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