Global Ozone Monitoring by Occultation of Stars

<h2 id="instrument-details">Instrument details</h2>
<p>The 250-680 <a href="/facts/Nanometer/a98sjHyu">nm</a> spectral domain is used for the determination of <a href="/facts/Ozone/o0E5gn2p">O3</a>, <a href="/facts/Nitrogen_dioxide/FoLvApPI">NO2</a>, <a href="/facts/Nitrate/5AnVlYnL">NO3−</a>, <a href="/facts/Particulate/RleGr5E6">aerosols</a> and <a href="/facts/Temperature/QyGe4gmj">temperature</a>. In addition, two high spectral resolution channels centred at 760 and 940 nm allow measurements of <a href="/facts/Oxygen/acyn6o8r">O2</a> and <a href="/facts/Water/0lkXnJPK">H2O</a> and two fast <a href="/facts/Photometer/M2mxg4VS">photometers</a> are used to correct star scintillation perturbations and to determine high vertical resolution temperature profiles. 
</p><p>Global latitude coverage is obtained with up to 40 stellar occultations per <a href="/facts/Orbit/nD2TPySG">orbit</a> from South Pole to North Pole. Data acquired on dark limb (night-time) are of better quality than on bright limb (day-time) because of a smaller perturbation by background light.
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<h2 id="history">History</h2>
<p>GOMOS was first proposed in 1988 as an Announcement of Opportunity instrument dedicated to be a part of the Earth Observation Polar Platform Mission, the former name of Envisat. In 1992 it was decided that GOMOS would be developed as a <a href="/facts/European_Space_Agency/L8YRNV0C">European Space Agency</a>-funded instrument.
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<h2 id="external-links">External links</h2>
<ul><li><a href="https://earth.esa.int/eogateway/instruments/gomos">Official ESA GOMOS page</a></li>
<li><a href="http://wdc.dlr.de/sensors/gomos/">GOMOS page</a> <a href="https://web.archive.org/web/20200218080832/http://wdc.dlr.de/sensors/gomos/">Archived</a> 2020-02-18 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a> from <a href="/facts/German_Aerospace_Center/nIeKtKqd">DLR</a></li></ul>

Global Ozone Monitoring by Occultation of Stars open-in-new

Global Ozone Monitoring by Occultation of Stars