Airborne measurements of atmospheric methane column abundance using a pulsed integrated-path differential absorption lidar

Riris, Haris; Numata, Kenji; Li, Steve; Wu, Shuying; Ramanathan, Anand; Dawsey, Martha; Mao, Jianping; Kawa, Randy; Abshire, James B.

doi:10.1364/ao.51.008296

Cited by 53 publications

(32 citation statements)

References 51 publications

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“…Such pulses are extremely useful in remote sensing applications such as differential absorption lidar (DiAL), see for example [39]. In this section we investigate the likely Q-switching behavior of a 3.5 µm fiber laser using our time domain numerical model [27].…”

Section: Q-switchingmentioning

confidence: 99%

Recent Advances in 3.5 μm Erbium-Doped Mid-Infrared Fiber Lasers

Henderson-Sapir

Malouf

Bawden

et al. 2017

IEEE J. Select. Topics Quantum Electron.

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Section: Q-switchingmentioning

confidence: 99%

Recent Advances in 3.5 μm Erbium-Doped Mid-Infrared Fiber Lasers

Henderson-Sapir

Malouf

Bawden

et al. 2017

IEEE J. Select. Topics Quantum Electron.

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“…Recent efforts in the framework of NASA's ASCENDS (Active Sensing of CO 2 Emissions over Nights, Days, and Seasons) mission proposal have led to a significant step towards an active CO 2 sensor in space (NASA report on ASCENDS, and references therein [64]). For CH 4 , reports on active airborne measurements are still sparse [65]. CHARM-F, DLR's new airborne IPDA Lidar instrument for CH 4 and CO 2 , has just recently been completed and tested on the German research aircraft HALO (High Altitude and Long Range Research Aircraft) for the first time [66].…”

Section: Introductionmentioning

confidence: 99%

MERLIN: A French-German Space Lidar Mission Dedicated to Atmospheric Methane

Ehret¹,

et al. 2017

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Abstract:The MEthane Remote sensing Lidar missioN (MERLIN) aims at demonstrating the spaceborne active measurement of atmospheric methane, a potent greenhouse gas, based on an Integrated Path Differential Absorption (IPDA) nadir-viewing LIght Detecting and Ranging (Lidar) instrument. MERLIN is a joint French and German space mission, with a launch currently scheduled for the timeframe 2021/22. The German Space Agency (DLR) is responsible for the payload, while the platform (MYRIADE Evolutions product line) is developed by the French Space Agency (CNES). The main scientific objective of MERLIN is the delivery of weighted atmospheric columns of methane dry-air mole fractions for all latitudes throughout the year with systematic errors small enough (<3.7 ppb) to significantly improve our knowledge of methane sources from global to regional scales, with emphasis on poorly accessible regions in the tropics and at high latitudes. This paper presents the MERLIN objectives, describes the methodology and the main characteristics of the payload and of the platform, and proposes a first assessment of the error budget and its translation into expected uncertainty reduction of methane surface emissions.

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“…The spaceborne and aircraft version of the MERLIN (DLR/CNES) instrument is expected to have a precision of ∼18 ppb over 50 km spatial averaging ( Kiemle et al, 2011). The Methane Sounder, being developed at NASA Goddard Space Flight Center, was tested on the NASA DC-8 in the summer of 2011 (Riris et al, 2012). While this is a breadboard instrument, only designed to demonstrate the use of laser technology, its precision is ∼50 ppb.…”

Section: Application To Remote Sensingmentioning

confidence: 99%

Retrieval of methane source strengths in Europe using a simple modeling approach to assess the potential of spaceborne lidar observations

et al. 2014

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Abstract. We investigate the sensitivity of future spaceborne lidar measurements to changes in surface methane emissions. We use surface methane observations from nine European ground stations and a Lagrangian transport model to infer surface methane emissions for 2010. Our inversion shows the strongest emissions from the Netherlands, the coal mines in Upper Silesia, Poland, and wetlands in southern Finland. The simulated methane surface concentrations capture at least half of the daily variability in the observations, suggesting that the transport model is correctly simulating the regional transport pathways over Europe. With this tool we can test whether proposed methane lidar instruments will be sensitive to changes in surface emissions. We show that future lidar instruments should be able to detect a 50 % reduction in methane emissions from the Netherlands and Germany, at least during summer.

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Airborne measurements of atmospheric methane column abundance using a pulsed integrated-path differential absorption lidar

Cited by 53 publications

References 51 publications

Recent Advances in 3.5 μm Erbium-Doped Mid-Infrared Fiber Lasers

Recent Advances in 3.5 μm Erbium-Doped Mid-Infrared Fiber Lasers

MERLIN: A French-German Space Lidar Mission Dedicated to Atmospheric Methane

Retrieval of methane source strengths in Europe using a simple modeling approach to assess the potential of spaceborne lidar observations

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