anchor.diff:        <div class='source_header'>
           <strong class='source_title'>QUICC alerts</strong>
           <i class='expand_arrow'></i>
  -        <em class='source_description'>(quarterly, 5km, near-global)</em>
  +        <em class='source_description'>(quarterly, 5km, <37 degrees north)</em>
         </div>
   
         <div class='source_body'>
  
positive.code: 
            <p>The <a href='http://geo.arc.nasa.gov/sge/casa/latest.html' target='_blank'>Quarterly Indicator of Cover Change (QUICC)</a> product was developed at the NASA Ames Research Center by the <a href='http://geo.arc.nasa.gov/sge/casa/' target='_blank'>CASA</a> ecosystem modeling team. QUICC compares the MODIS global vegetation index (VI) images at the exact same time period each year on a quarterly basis (end of March, June, September, and December) and identifies land areas that have lost at least 40% of their green vegetation from the previous product and over the past year. This level of green vegetation loss is commonly associated with major forest or tree cover loss.</p>
  
            <p>The CASA team updates the global QUICC products as soon as the newest quarterly MODIS worldwide VI image is produced. After September (Q3) 2012, the data were adjusted to exclude forest areas located >37 degrees north as a result of confusion caused by year-to-year variations in seasonal snow cover</p>
  
            <p class='credits'><strong>Citation:</strong> NASA-CASA Project. “CASA ‘Quarterly Indicator of Cover Change’ (QUICC).” Accessed on [date].<br /><a href='http://geo.arc.nasa.gov/sge/casa/latest.html' target='_blank'>geo.arc.nasa.gov/sge/casa/latest.html</a>.</p>
  
            <p class='credits'><strong>Suggested citation for data as displayed on GFW:</strong> “QUICC Alerts.' NASA Ames Research Center and California State University. Accessed through Global Forest Watch on [date].<br /><a href='http://www.globalforestwatch.org' target='_blank'>www.globalforestwatch.org</a>.</p>
  
            <p class='read_more hidden'><em><%= link_to 'Learn more or download data', sources_path %></em>
          </div>
  
negative.code:           <dl class='sources_row'>
              <dt>Cautions</dt>
              <dd>
              <p>The data represents an indicator of vegetation cover change, not necessarily tree or forest cover loss.</p>
                <p>When zoomed out, this data layer displays some degree of inaccuracy because the data points must be collapsed to be visible on a larger scale. Zoom in for greater detail.</p>
              </dd>
            </dl>
  