Results 31 to 40 of about 2,465,580 (245)

Differential absorption lidar measurements of water vapor by the High Altitude Lidar Observatory (HALO): retrieval framework and first results

Atmospheric Measurement Techniques, 2022
. Airborne differential absorption lidar (DIAL) offers a uniquely capable solution to the problem of measuring water vapor (WV) with high precision, accuracy, and resolution throughout the troposphere and lower stratosphere.
B. Carroll, A. Nehrir, S. Kooi, J. Collins, R. Barton-Grimley, A. Notari, D. Harper, Joseph Lee   +7 more
semanticscholar   +1 more source

Open-Shell Conjugated Polymers Enable Photothermoelectric Conversion and Detection of Short-Wave Infrared Light. [PDF]

Adv Sci (Weinh)
Efficient conversion and detection of short‐wave infrared (SWIR) photons are becoming increasingly important for emerging photonic and energy technologies. Here, we report an organic photothermoelectric device based on an open‐shell conjugated polymer that enables SWIR energy conversion and photon detection via the photothermoelectric effect.
Chen GL, Lee S, Hong SH, Lin JM, Woo HY, Liu CL.   +5 more
europepmc   +2 more sources

Dual Laser Indium Phosphide Photonic Integrated Circuit for Integrated Path Differential Absorption Lidar

IEEE Journal of Selected Topics in Quantum Electronics, 2022
An indium phosphide photonic integrated circuit (PIC) was demonstrated for integrated path differential absorption lidar of atmospheric carbon dioxide (CO2).
Joseph Fridlander, F. Sang, Victoria Rosborough, F. Gambini, Simone Tommaso Šuran-Brunelli, Jeffrey R. Chen, K. Numata, M. Stephen, L. Coldren, J. Klamkin   +9 more
semanticscholar   +1 more source

Flight Demonstration of a 2-Micron, Double Plused CO2 IPDA Lidar Instrument [PDF]

EPJ Web of Conferences, 2020
NASA Langley Research Center (LaRC) developed a double pulsed, high energy 2-micron Integrated Path Differential Absorption (IPDA) lidar instrument to measure atmospheric CO2 column density.
Yu Jirong, Petros Mulugeta, Singh Upendra, Refaat Tamer, Reithmaier Karl, Remus Ruben, Johnson William   +6 more
doaj   +1 more source

Range-resolved detection of boundary layer stable water vapor isotopologues using a ground-based 1.98 µm differential absorption LIDAR.

Optics Express, 2022
This paper presents a first demonstration of range-resolved differential absorption LIDAR (DIAL) measurements of the water vapor main isotopologue H2 16O and the less abundant semi-heavy water isotopologue HD16O with the aim of determining the isotopic ...
J. Hamperl, J. Dherbecourt, M. Raybaut, J. Totems, P. Chazette, L. Régalia, B. Grouiez, N. Geyskens, O. Aouji, N. Amarouche, J. Melkonian, R. Santagata, A. Godard, C. Evesque, V. Pasiskevicius, C. Flamant   +15 more
semanticscholar   +1 more source

Development of a laser for differential absorption lidar measurement of atmospheric carbon dioxide [PDF]

, 2014
In the quest for a better understanding of climate change, greater importance is attached to monitoring the levels of atmospheric carbon dioxide to gain an improved knowledge of sources and sinks.
Cameron F. Rae, John B. Moncrieff, Rae, Cameron F., Moncrieff, John B., James W. Jack, Jack, James W., Moncrieff, John, Robinson, Iain, Rae, Cameron, Iain Robinson, Jack, Jim   +10 more
core   +1 more source

Multi-frequency differential absorption lidar incorporating a comb-referenced scanning laser for gas spectrum analysis.

Optics Express, 2021
A multi-frequency differential absorption lidar incorporating a tunable laser and an optical frequency comb is demonstrated for precise spectrum analysis of atmospheric gas.
Sai-Fen Yu, Zhen Zhang, Manyi Li, Hai-Yun Xia   +3 more
semanticscholar   +1 more source

Ongoing activities at LMD to prepare the CH4 space lidar mission MERLIN [PDF]

EPJ Web of Conferences
MERLIN (MEthane Remote LIdar missioN) is a space mission developed by France and Germany to monitor the atmospheric methane using an IPDA (Integrated Path Differential Absorption) lidar.
Gibert Fabien, Armante Raymond, Cassé Vincent, Chomette Olivier, Crevoisier Cyril, Delahaye Thibault, Edouart Dimitri, Nahan Frédéric, Tran Ha   +8 more
doaj   +1 more source

Airborne Lidar observations of water vapor transport [PDF]

, 2012
Water vapor, a minor constituent of the earth’s atmosphere, plays a major role in the radiation budget and the water cycle with important implications for weather and climate.
Andreas Fix, Stephan Rahm, Martin Wirth, Fix, A., Christoph Kiemle, Wirth, M., Kiemle, C., Schäfler, Andreas, Andreas Schafler   +8 more
core   +1 more source

Intercomparison of Water Vapor Data Measured with Lidar during IHOP_2002. Part I: Airborne to Ground-Based Lidar Systems and Comparisons with Chilled-Mirror Hygrometer Radiosondes [PDF]

, 2007
The water vapor data measured with airborne and ground-based lidar systems during the International H2O Project (IHOP_2002), which took place in the Southern Great Plains during 13 May–25 June 2002 were investigated.
Wulfmeyer, Volker, R. FERRARE, E. V. BROWELL, Ferrare, Richard, J. WANG, Ismail, Syed, S. KOOI, D. SUMMA, Schaberl, Thorsten, B. B. DEMOZ, Andreas Behrendt, Richard Ferrare, Whiteman, David N., T. SCHABERL, S. ISMAIL, DI GIROLAMO, Paolo, V. WUFMEYER, Demoz, Belay B., A. BEHRENDT, Kooi, Susan, Ehret, Gerhard, Summa, Donato, Demoz, Belay, Browell, Edward V., Kiemle, Christoph, Volker Wulfmeyer, Wang, Junhong, Behrendt, Andreas, Christoph Kiemle, Paolo Di Girolamo, D. N. WHITEMAN, Gerhard Ehret, Donato Summa, Syed Ismail, Belay B. Demoz, Bauer, Hans-Stefan, C. KIEMLE, Susan Kooi, H. S. BAUER, David N. Whiteman, Thorsten Schaberl, Junhong Wang, Browell, Edward, Girolamo, Paolo, G. EHRET, Edward V. Browell, Hans-Stefan Bauer, Whiteman, David   +47 more
core   +1 more source