Current 2-μm dial measurements of atmospheric CO2 and expected results from space using new MCT APDS

A. Dumas, F. Gibert, J. Rothman, D. Édouart, F. Le Mounier, C. Cénac

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the framework of CO2 monitoring in the Atmospheric Boundary Layer (ABL), a ground-based 2-μm Differential Absorption Lidar (DIAL) has been developed at the Laboratoire de Météorologie Dynamique (LMD) in Palaiseau. In order to derive flux information, this system has been set up with coherent detection, which allows to combine CO2 density measurements with wind velocity measurements. On the other hand, new advances in the field of Mercury Cadmium Tellure (MCT) Avalanche Photodiodes (APDs) open the way for high-precision measurements in direct detection ultimately from space. In this study, we first report on state of the art measurements obtained with the current coherent DIAL system before presenting expected results for a similar laser transmitter equipped with MCT APDs. For this latter part, we use a numerical model which relies on APDs performance data provided by the Laboratoire d'Électronique et de Technologie de l'Information (LETI).

Original languageEnglish
Title of host publicationInternational Conference on Space Optics, ICSO 2014
EditorsZoran Sodnik, Bruno Cugny, Nikos Karafolas
PublisherSPIE
ISBN (Electronic)9781510616158
DOIs
Publication statusPublished - 14 Nov 2017
EventInternational Conference on Space Optics, ICSO 2014 - La Caleta, Tenerife, Canary Islands, Spain
Duration: 7 Oct 201410 Oct 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10563
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Space Optics, ICSO 2014
Country/TerritorySpain
CityLa Caleta, Tenerife, Canary Islands
Period7/10/1410/10/14

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