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   Automated Surface Observing System
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ASOS arrays, maintained by National Weather Service, are often located at airports.<tr><td style="text-align: right; font-weight: bold; color: brown;">Status:<td style="text-align: left; vertical-align: middle">Active - 1996 to Present<tr><td style="text-align: right; font-weight: bold; color: brown;">Number of Sites in Program:<td style="text-align: left;">313 in eastern US<tr><td style="text-align: right; font-weight: bold; color: brown;">Number of Sites Registered in GCMP:<td style="text-align: left;">223<tr><td style="text-align: right; font-weight: bold; color: brown;">Point of Contact:<td style="text-align: left;">No Point of Contact Recorded<tr><td style="text-align: right; font-weight: bold; color: brown;">Program URL:<td style="text-align: left;"><a style="cursor: pointer;"onclick=window.open('http://www.faa.gov/air_traffic/weather/asos/')> http://www.faa.gov/air_traffic/weather/asos/ </a><tr><td style="text-align: right; font-weight: bold; color: brown;">Data Access URL:<td style="text-align: left;"><a style="cursor: pointer;"onclick=window.open('http://www.nc-climate.ncsu.edu/cronos')> http://www.nc-climate.ncsu.edu/cronos </a><tr><td style="text-align: right; font-weight: bold; color: brown;">Sponsoring Organization(s):<td style="text-align: left;">National Weather Service, Federal Aviation Administration<tr><td style="text-align: right; font-weight: bold; color: brown;">Management Issue Addressed/Purpose of Sampling:<td style="text-align: left; vertical-align: middle">Air traffic operations<tr><td style="text-align: right; font-weight: bold; color: brown;">Sampling Frequency:<td style="text-align: left;">Hourly<tr><td style="text-align: right; font-weight: bold; color: brown;">Area Sampled:<td style="text-align: left;">National</table></div><div class=info2 id=mparams><table><tbody><tr><td style="text-align: right; font-weight: bold; color: brown; min-width: 150px;">Monitored Parameters:<td style="text-align: left; font-weight: bold;">Media<td style="text-align: left; font-weight: bold;">Measurement<td style="text-align: left; font-weight: bold;">Biological<td style="text-align: left; font-weight: bold;">Chemical<td style="text-align: left; font-weight: bold;">Physical<tr><td> <td style="text-align: left;">Air<td style="text-align: left;">Physical<td style="text-align: left;"> <td style="text-align: left;"> <td style="text-align: left;">Meteorological</table></div><div style="margin: 1em;"><div class="buttons2 inblock"><a style="color: black;"href=/gcmp/site/list/33236 type=submit> Show List of Monitoring Sites in GCMP </a></div><br><br><br><br><div style="float: left; width: 20%; height: 15%;"><div style="float: left; cursor: pointer;"title="Show Sites on Map"id=checkboxes><input name=_ASOS type=hidden><input checked id=33236 name=ASOS onchange=updateLayers(); type=checkbox value=true><a onclick=setChecked(33236)> Show Sites </a></div><br><br><div style="float:left; font: normal 10px; overflow: auto; border: 1px solid; padding: 5px;"id=legend></div></div><div style="width: 75%; height: 750px; float: right"id=bigcontainer><div style="width:100%; height:100%;"design=headline dojotype=dijit.layout.BorderContainer gutters=false id=container livesplitters=true><div style="padding: 5px; width: 100%; height: 100%; float: right; overflow: auto;"dojotype=dijit.layout.ContentPane id=mapwrapper region=right splitter=false><div style="height: 100%; width: 100%;"id=map><div style="position:absolute; right:20px; top:10px; z-Index:999;"><div data-dojo-props="title:'Switch Basemap', closable:false, open:false"data-dojo-type=dijit/TitlePane><div style="width:380px; height:280px; overflow:auto;"data-dojo-type=dijit/layout/ContentPane><div id=basemapGallery></div></div></div></div></div></div></div><script>dojo.ready(function () {
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