Infrared astronomical characteristics of the Roque de los Muchachos Observatory: precipitable water vapour statistics
We present measurements of the atmospheric water vapour content above the Roque de los Muchachos Observatory (ORM) obtained using the Global Positioning System (GPS). The GPS measurements have been evaluated by comparison with 940-nm radiometer observations. A statistical analysis of the GPS measure...
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2010-07, Vol.405 (4), p.2683-2696 |
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description | We present measurements of the atmospheric water vapour content above the Roque de los Muchachos Observatory (ORM) obtained using the Global Positioning System (GPS). The GPS measurements have been evaluated by comparison with 940-nm radiometer observations. A statistical analysis of the GPS measurements points to the ORM as an observing site with suitable conditions for infrared observations, with a median column of precipitable water vapour (PWV) of 3.8 mm. PWV presents a clear seasonal behaviour, with winter and spring being the best seasons for infrared observations. The percentage of nights showing PWV values less than 3 mm is over 60 per cent in February, March and April. We have also estimated the temporal variability of water vapour content at the ORM. We present a summary of PWV statistical results at different astronomical sites, noting that these values are not directly comparable as a result of the differences in the techniques used to recorded the data. |
doi_str_mv | 10.1111/j.1365-2966.2010.16649.x |
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M.</creatorcontrib><title>Infrared astronomical characteristics of the Roque de los Muchachos Observatory: precipitable water vapour statistics</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><description>We present measurements of the atmospheric water vapour content above the Roque de los Muchachos Observatory (ORM) obtained using the Global Positioning System (GPS). The GPS measurements have been evaluated by comparison with 940-nm radiometer observations. A statistical analysis of the GPS measurements points to the ORM as an observing site with suitable conditions for infrared observations, with a median column of precipitable water vapour (PWV) of 3.8 mm. PWV presents a clear seasonal behaviour, with winter and spring being the best seasons for infrared observations. The percentage of nights showing PWV values less than 3 mm is over 60 per cent in February, March and April. We have also estimated the temporal variability of water vapour content at the ORM. We present a summary of PWV statistical results at different astronomical sites, noting that these values are not directly comparable as a result of the differences in the techniques used to recorded the data.</description><subject>Astronomical instruments</subject><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geographic information systems</subject><subject>Global Positioning System</subject><subject>Infrared</subject><subject>Infrared radiation</subject><subject>infrared: general</subject><subject>instrumentation: miscellaneous</subject><subject>Observatories</subject><subject>Satellite navigation systems</subject><subject>site testing</subject><subject>Stars & galaxies</subject><subject>Vapour</subject><subject>Winter</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kV9v0zAUxSMEEmXsO1hICF5S7Di2Ex6QUAVs0sqk_RHTXizbuVVd0jjYztZ-e5xm6gMI_OIr39858r0nyxDBc5LOh82cUM7youZ8XuDxlfOynu-eZbNj43k2w5iyvBKEvMxehbDBGJe04LNsOO9WXnlokArRu85trVEtMmvllYngbYjWBORWKK4BXblfA6AGUOsCWg6JMutUXeoA_kFF5_cfUe_B2N5GpVtAjyp5oAfVu8GjEFWc_F5nL1aqDXD6dJ9kt1-_3CzO8ovLb-eLzxe5YaSu86ZKIwimGauM1nVFBWADK17jhirAQJjWqUmYEVCwMgGkhoqWvMFaC2boSfZu8u39-PMQ5dYGA22rOnBDkIJRznFaSyLf_5ckXJCCElHyhL75A92k6bo0h2RCcMxIMUJvnyAV0kLTjjtjg-y93Sq_l0WKhYoD92niHm0L-2OfYDmmKzdyDFGOIcoxXXlIV-7k8vvVoUwGdDJwQ_8Pef6XPKnySZXygN1Rp_xPyQUVTJ7d3cvFNebV8v6HvKO_AQ06uf8</recordid><startdate>20100711</startdate><enddate>20100711</enddate><creator>García-Lorenzo, B.</creator><creator>Eff-Darwich, A.</creator><creator>Castro-Almazán, J.</creator><creator>Pinilla-Alonso, N.</creator><creator>Muñoz-Tuñón, C.</creator><creator>Rodríguez-Espinosa, J. M.</creator><general>Blackwell Publishing Ltd</general><general>Wiley-Blackwell</general><general>Oxford University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20100711</creationdate><title>Infrared astronomical characteristics of the Roque de los Muchachos Observatory: precipitable water vapour statistics</title><author>García-Lorenzo, B. ; Eff-Darwich, A. ; Castro-Almazán, J. ; Pinilla-Alonso, N. ; Muñoz-Tuñón, C. ; Rodríguez-Espinosa, J. 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M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Infrared astronomical characteristics of the Roque de los Muchachos Observatory: precipitable water vapour statistics</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><stitle>Monthly Notices of the Royal Astronomical Society</stitle><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><date>2010-07-11</date><risdate>2010</risdate><volume>405</volume><issue>4</issue><spage>2683</spage><epage>2696</epage><pages>2683-2696</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><coden>MNRAA4</coden><abstract>We present measurements of the atmospheric water vapour content above the Roque de los Muchachos Observatory (ORM) obtained using the Global Positioning System (GPS). The GPS measurements have been evaluated by comparison with 940-nm radiometer observations. A statistical analysis of the GPS measurements points to the ORM as an observing site with suitable conditions for infrared observations, with a median column of precipitable water vapour (PWV) of 3.8 mm. PWV presents a clear seasonal behaviour, with winter and spring being the best seasons for infrared observations. The percentage of nights showing PWV values less than 3 mm is over 60 per cent in February, March and April. We have also estimated the temporal variability of water vapour content at the ORM. We present a summary of PWV statistical results at different astronomical sites, noting that these values are not directly comparable as a result of the differences in the techniques used to recorded the data.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-2966.2010.16649.x</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Astronomical instruments Astronomy Earth, ocean, space Exact sciences and technology Geographic information systems Global Positioning System Infrared Infrared radiation infrared: general instrumentation: miscellaneous Observatories Satellite navigation systems site testing Stars & galaxies Vapour Winter |
title | Infrared astronomical characteristics of the Roque de los Muchachos Observatory: precipitable water vapour statistics |
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