<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>B. J. Choudhury</dc:contributor>
  <dc:contributor>M. S. Moran</dc:contributor>
  <dc:contributor>R. J. Reginato</dc:contributor>
  <dc:contributor>R. D. Jackson</dc:contributor>
  <dc:contributor>L. W. Gay</dc:contributor>
  <dc:contributor>H. L. Weaver</dc:contributor>
  <dc:creator>William P. Kustas</dc:creator>
  <dc:date>1989</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Surface temperatures,&amp;nbsp;&lt;/span&gt;&lt;i&gt;T&lt;/i&gt;&lt;sub&gt;s&lt;/sub&gt;&lt;span&gt;, were estimated for a natural vegetative surface in Owens Valley, California, with infrared thermometric observations collected from an aircraft. The region is quite arid and is composed primarily of bushes (∼30%) and bare soil (∼70%). Application of the bulk transfer equation for the estimation of sensible heat,&amp;nbsp;&lt;/span&gt;&lt;i&gt;H&lt;/i&gt;&lt;span&gt;, gave unsatisfactory values when compared to Bowen ratio and eddy correlation methods over a particular site. This was attributed to the inability with existing data to properly evaluate the resistance to heat transfer,&amp;nbsp;&lt;/span&gt;&lt;i&gt;r&lt;/i&gt;&lt;sub&gt;&lt;i&gt;ah&lt;/i&gt;&lt;/sub&gt;&lt;span&gt;. To obtain appropriate&amp;nbsp;&lt;/span&gt;&lt;i&gt;r&lt;/i&gt;&lt;sub&gt;ah&lt;/sub&gt;&lt;span&gt;-values the added resistance to heat transfer,&amp;nbsp;&lt;/span&gt;&lt;i&gt;kB&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;&lt;span&gt;, was allowed to vary although there is both theoretical and experimental evidence that&amp;nbsp;&lt;/span&gt;&lt;i&gt;kB&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;&lt;span&gt;&amp;nbsp;for vegetative surfaces can be treated as constant. The present data indicate that for partial canopy cover under arid conditions&amp;nbsp;&lt;/span&gt;&lt;i&gt;kB&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;&lt;span&gt;&amp;nbsp;may be a function of&amp;nbsp;&lt;/span&gt;&lt;i&gt;T&lt;/i&gt;&lt;sub&gt;s&lt;/sub&gt;&lt;span&gt;&amp;nbsp;measured radiometrically. The equation determining&amp;nbsp;&lt;/span&gt;&lt;i&gt;kB&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;&lt;span&gt;&amp;nbsp;was simplified and tested over another arid site with good results; however, this had a limited data set (i.e., 6 data points). The dimensionless&amp;nbsp;&lt;/span&gt;&lt;i&gt;kB&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;&lt;span&gt;&amp;nbsp;equation is simplified for use over full canopy cover and is shown to give satisfactory estimates of&amp;nbsp;&lt;/span&gt;&lt;i&gt;H&lt;/i&gt;&lt;span&gt;&amp;nbsp;over a fully-grown wheat crop.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/0168-1923(89)90017-8</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Determination of sensible heat flux over sparse canopy using thermal infrared data</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>