 |
| Titel |
Greenhouse gas measurements over a 144 km open path in the Canary Islands |
| VerfasserIn |
J. S. A. Brooke, P. F. Bernath, G. Kirchengast, C. B. Thomas, J.-G. Wang, K. A. Tereszchuk, G. González Abad, R. J. Hargreaves, C. A. Beale, J. J. Harrison, S. Schweitzer, V. Proschek, P. A. Martin, V. L. Kasyutich, C. Gerbig, O. Kolle, A. Loescher |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1867-1381
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 5, no. 9 ; Nr. 5, no. 9 (2012-09-27), S.2309-2319 |
| Datensatznummer |
250003093
|
| Publikation (Nr.) |
 copernicus.org/amt-5-2309-2012.pdf |
|
|
|
|
|
| Zusammenfassung |
| A new technique for the satellite remote sensing of greenhouse gases in the
atmosphere via the absorption of short-wave infrared laser signals
transmitted between counter-rotating satellites in low Earth orbit has
recently been proposed; this would enable the acquisition of a long-term,
stable, global set of altitude-resolved concentration measurements. We
present the first ground-based experimental demonstration of this new
infrared-laser occultation method, in which the atmospheric absorption of
CO2 near 2.1 μm was measured over a ~144 km path length
between two peaks in the Canary Islands (at an altitude of ~2.4 km),
using relatively low power diode lasers (~4 to 10 mW). The retrieved
CO2 volume mixing ratio of 400 ppm (±15 ppm) is consistent within
experimental uncertainty with simultaneously recorded in situ validation
measurements. We conclude that the new method has a sound basis for
monitoring CO2 in the free atmosphere; other greenhouse gases such as
methane, nitrous oxide and water vapour can be monitored in the same way. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|