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      Dew measurements along a longitudinal sand dune transect, Negev Desert, Israel.

      International Journal of Biometeorology
      Animals, Desert Climate, Ecosystem, Israel, Water, analysis

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          Abstract

          In a desert environment dew can serve as an important source of moisture for plants, biological crusts, insects and small animals. A measurement programme was carried out within a sand dune belt situated in the northwestern Negev desert, Israel, to measure daily amounts of dew deposition as well as micro-meteorological conditions during the dew formation and early-morning drying process. Dew quantities were measured by micro-lysimeters along a 200-m transect as well as by the eddy-correlation technique at a reference location. A simple physical model was constructed to simulate the dew deposition process as well as early-morning drying for the interdune area and the north- and south-facing dune slopes. Measurements carried out during September and October 1997 showed that the daily amounts of dew ranged between 0.1 mm/night and 0.3 mm/night within the interdune area. On the slopes, the amounts of dew were about 50% lower. Simulated results agreed well with the field data.

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          Author and article information

          Journal
          10789921
          10.1007/s004840050007

          Chemistry
          Animals,Desert Climate,Ecosystem,Israel,Water,analysis
          Chemistry
          Animals, Desert Climate, Ecosystem, Israel, Water, analysis

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