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<h1 class="pageheader">GML Data Finder</h1>

<p>
	Use this web page to find specific data files available from the Global Monitoring Laboratory.  
	Click on the <span class='btn-info btn-sm' style='padding: 0.15rem 0.5rem'>Data <i class="fas fa-share"></i></span> button under the 'Data' column heading in the table to go to the description and download page
	for that dataset.
</p>

<br>

<div class="small gray">Select from the following lists to narrow your search.</div>

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         <span class='h6'>Category</span>
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         <div class='scrollbox'>
         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&category=Greenhouse%2BGases">Greenhouse Gases</a><span class='small mediumgray'> (2)</span><br>
         </div>
      </div>
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      <a href='//gml.noaa.gov/data/data.php?pageID=3&site=NAT' title='Clear this selection'><span class='fas fa-check-square check'></span></a>
         <span class='h6'>Parameter</span>
<span class='sitehelp fa fa-question-circle' data-content='Datasets with more than one parameter will be under `Multiple`' data-toggle='popover'>&nbsp;</span>      </div>
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         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT">Methane</a><span class='small mediumgray'> (2)</span><br>
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         <span class='h6'>Type</span>
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         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&type=Flask">Flask</a><span class='small mediumgray'> (2)</span><br>
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         <span class='h6'>Frequency</span>
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         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&frequency=Discrete">Discrete</a><span class='small mediumgray'> (1)</span><br>
         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&frequency=Monthly%2BAverages">Monthly Averages</a><span class='small mediumgray'> (1)</span><br>
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      <a href='//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane' title='Clear this selection'><span class='fas fa-check-square check'></span></a>
         <span class='h6'>Site</span>
<span class='sitehelp fa fa-question-circle' data-content='Datasets with more than one site will be under `Multiple`' data-toggle='popover'>&nbsp;</span>      </div>
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         <a href="//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT" title="Farol De Mae Luiza Lighthouse, Brazil">NAT</a><span class='small mediumgray'> (2)</span><br>
         </div>
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   <div class='row mb-3'>   <div class='col-md-6'>   <form class='form-inline' action='/data/data.php'>
      <span class='small gray'>&nbsp; or enter search term: </span>
      <input type='hidden' value='3' name='pageID'>
      <input type='hidden' value='Methane' name='parameter_name'>
      <input type='hidden' value='NAT' name='site'>
      <label for='searchbox' class='sr-only'>Search</label>
      <input class='form-control input-xs ml-1' name='search' value='' id='searchbox' style='width: 180px;'>
      <button type='submit' class='btn btn-success btn-sm ml-2'><span class='fas fa-search'></span> Search</button>
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      <div class='col-md-6'>      <a href='/dv/site/' class='small font-italic float-right'>      Information about site codes can be found here. <span class='fas fa-info-circle'></span></a>
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<span class='total'>2</span> Datasets filtered from 5364 originally.  <a class='btn btn-secondary  btn-sm ml-2' href='data.php'>Reset all Filters</a>

<div style='float:right; margin-top: 10px;' class='xsmall mediumgray'>
   <form action='/data/data.php' name='sortform'>
      <input type='hidden' value='3' name='pageID'>
      <input type='hidden' value='Methane' name='parameter_name'>
      <input type='hidden' value='NAT' name='site'>
   <label for='sortbox'>Sort Results By: </label>
   <select onchange='document.sortform.submit()' name='sortby' id='sortbox'>
   <option value='category' >Category</option>
   <option value='parameter_name' >Parameter_name</option>
   <option value='type' >Type</option>
   <option value='frequency' >Frequency</option>
   <option value='site' selected>Site</option>
   <option value='year' >Year</option>
   </select>
   </form>
</div>

<hr style='margin: 4px;'>
<div>    <span class='indent float-left small mediumgray' style='margin-top: 10px;'> Displaying [1 - 2] of 2 records. &nbsp;&nbsp;&nbsp; </span>
   <span class='float-right xsmall mediumgray' style='margin-top: 10px;'>
   <label for='perpagetop'>Records per page:</label>
   <select onchange="window.location='//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&amp;perpage='+this[this.selectedIndex].value;return false" id='perpagetop'>
   <option value='10' > 10 </option>
   <option value='20' > 20 </option>
   <option value='25' > 25 </option>
   <option value='50' selected> 50 </option>
   <option value='75' > 75 </option>
   <option value='100' > 100 </option>
   <option value='200' > 200 </option>
   </select>
   </span>

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<div class='clearfix'></div>
<div class='table-responsive'>
<table class='table table-bordered table-striped table-header'>
<thead>
   <tr>
	<th style='width: 16px;'><span class='sr-only'>Dataset Number</span></th>
	<th>Site</th>
	<th>Category</th>
	<th>Parameter</th>
	<th>Type</th>
	<th>Frequency</th>
	<th>Year</th>
	<th>Data</th>
   </tr>
</thead>
<tbody>   <tr>
      <td>
         <span class='small gray'>1</span><br>
      </td>
      <td>
         <span class='mediumred font-weight-bold'>Farol De Mae Luiza Lighthouse, Brazil (NAT)</span><br>
         <span class='description'>CH4 measurements from surface air samples collected in glass flasks at Farol De Mae Luiza Lighthouse, Brazil.</span>
      </td>
      <td>Greenhouse Gases</td>
      <td class='darkgreen'>Methane<br>(CH<SUB>4</SUB>)</td>
      <td>Flask</td>
      <td>Discrete</td>
      <td>Multiple</td>
      <td>
         <a class='btn btn-info btn-sm' href='dataset.php?item=nat-ch4-flask'>Data <span class='fas fa-share'></span></a>
      </td>
   </tr>
   <tr>
      <td>
         <span class='small gray'>2</span><br>
      </td>
      <td>
         <span class='mediumred font-weight-bold'>Farol De Mae Luiza Lighthouse, Brazil (NAT)</span><br>
         <span class='description'>Monthly averages of CH4 measurements from surface air samples collected in glass flasks at Farol De Mae Luiza Lighthouse, Brazil.</span>
      </td>
      <td>Greenhouse Gases</td>
      <td class='darkgreen'>Methane<br>(CH<SUB>4</SUB>)</td>
      <td>Flask</td>
      <td>Monthly Averages</td>
      <td>Multiple</td>
      <td>
         <a class='btn btn-info btn-sm' href='dataset.php?item=nat-ch4-flask-month'>Data <span class='fas fa-share'></span></a>
      </td>
   </tr>
</tbody></table>
</div>


<div>    <span class='indent float-left small mediumgray' style='margin-top: 10px;'> Displaying [1 - 2] of 2 records. &nbsp;&nbsp;&nbsp; </span>
   <span class='float-right xsmall mediumgray' style='margin-top: 10px;'>
   <label for='perpagebottom'>Records per page:</label>
   <select onchange="window.location='//gml.noaa.gov/data/data.php?pageID=3&parameter_name=Methane&site=NAT&amp;perpage='+this[this.selectedIndex].value;return false" id='perpagebottom'>
   <option value='10' > 10 </option>
   <option value='20' > 20 </option>
   <option value='25' > 25 </option>
   <option value='50' selected> 50 </option>
   <option value='75' > 75 </option>
   <option value='100' > 100 </option>
   <option value='200' > 200 </option>
   </select>
   </span>

</div>
<div class='clearfix'></div><br>
<span class='small gray font-italic'>Dataset list last updated on 20 December 2025<br>
Please send feedback on this page to <a href='mailto:webmaster.gml@noaa.gov'>GML Webmaster</a></span>

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