News

  • October Issue of Nature Scientific Reports: Research by Ali Behrangi & Colleagues Show That Human Activities Contribute Largely to Drying Out the Amazon

    Photo HAS Associate Professor Ali Behrangi
    Wednesday, November 13, 2019
    A research report, A Recent Systemic Increase in Vapor Pressure Deficit (VPD) over Tropical South America, by HAS Associate Professor Ali Behrangi and collaborators was recently published in the October issue of Nature, scientific reports.  Behrangi and colleagues analyzed decades of ground and satellite data and compared the trend to data from models estimating climate variability over thousands of years. The team used data from NASA's Atmospheric Infrared Sounder (AIRS) instrument aboard the Terra satellite. The research shows that the atmosphere above the Amazon rainforest has been drying o... Read More
  • Jen McIntosh Interviewed for PBS Arizona Science Radio

    Photo AZPM Arizona Science Logo
    Tuesday, November 5, 2019
    Congratulations to Jen McIntosh who was recently interviewed for Arizona Science, Arizona Public Media's radio show. Dr. Tim Swindle, Director of the UA Lunar and Planetary Laboratory, interviewed McIntosh during NPR's Science Friday broadcast. In Episode 206, The Cost of Energy Independence, broadcast on November 1, she discussed hydraulic fracturing, or "fracking," a method for natural gas extraction that has become popular over the past 15 years. Because more traditional methods of pulling up energy-producing materials from beneath the planet's surface may be more damaging to the environmen... Read More
  • Hoshin Gupta and Laura Condon Interviewed for PBS Arizona Science Radio Episodes

    Photo AZPM Arizona Science Logo
    Wednesday, September 18, 2019
    Kudos to HAS faculty members Hoshin Gupta and Laura Condon who were recently interviewed for Arizona Science, Arizona Public Media's radio show. Dr. Leslie Tolbert, UA Regents Professor Emerita, interviews guests each week during NPR's Science Friday broadcast. In Episode 195, Earth Science and the Art of Crunching Numbers, broadcast on August 16, Gupta discussed how he's meeting the challenge of data analysis in his Earth Science research and why he advises students should get comfortable with big data as they begin their careers. In Episode 198, Groundwater and climate change, broadcast on S... Read More
  • HAS Doctoral Student Mostafa Javadian Research Featured on Food and Agriculture Organization of the United Nations Website

    Photo Mostafa Javadian
    Tuesday, September 17, 2019
    Congratrulations to HAS doctoral student Mostafa Javadian whose research paper, METRIC and WaPOR Estimates of Evapotranspiration over the Lake Urmia Basin: Comparative Analysis and Composite Assessment, was recently published in the online journal Water, and was also featured on the Food and Agriculture Organization (FAO) of the United Nations website. Evapotranspiration is one of the main components of the water and energy balance. In this study, Javadian and co-authors compared 2 ET products suitable for regional analysis at high spatial resolution: the recent WaPOR product developed by FAO... Read More
  • New Research by Jen McIntosh Shows Fracking Has Less Impact on Groundwater Than Traditional Oil and Gas Production

    Photo HAS Professor Jennifer McIntosh
    Tuesday, September 10, 2019
    New research led by HAS Professor Jennifer McIntosh shows that fracking has less impact on groundwater than traditional oil and gas production methods which inject much more water underground than other petroleum-production methods.  High-volume hydraulic fracturing, known as fracking, injects water, sand, and chemicals under high pressure into petroleum-bearing rock formations to recover previously inacessible oil and natural gas. This method led to the current shale gas boom that started about 15 years ago. "If we want to look at the environmental impacts of oil and gas production, we should... Read More

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