Results 41 to 50 of about 2,030,862 (242)

CHARM-F: The Airborne Integral Path Differential Absorption Lidar for Simultaneous Measurements of Atmospheric CO2 and CH4 [PDF]

, 2010
CHARM-F (CO2 and CH4 Atmospheric Remote Monitoring – Flugzeug) is DLR’s airborne Integral Path Differential Absorption lidar for simultaneous measurements of the column weighted-average dry-air mixing ratios of atmospheric carbon dioxide and methane ...
Schweyer, Sebastian, Meissner, Ansgar, Kiemle, Christoph, Fix, Andreas, Löhring, Jens, Büdenbender, Christian, Quatrevalet, Mathieu, Hoffmann, Dieter, Amediek, Axel, Luttmann, Jörg, Ehret, Gerhard, Wirth, Martin   +11 more
core  

Open‐Shell Conjugated Polymers Enable Photothermoelectric Conversion and Detection of Short‐Wave Infrared Light

Advanced Science, EarlyView.
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.
Guan‐Lin Chen, Soonyong Lee, Shao‐Huan Hong, Jhih‐Min Lin, Han Young Woo, Cheng‐Liang Liu   +5 more
wiley   +1 more source

Field-deployable diode-laser-based differential absorption lidar (DIAL) for profiling water vapor [PDF]

Atmospheric Measurement Techniques, 2015
A field-deployable water vapor profiling instrument that builds on the foundation of the preceding generations of diode-laser-based differential absorption lidar (DIAL) laboratory prototypes was constructed and tested. Significant advances are discussed,
S. M. Spuler, K. S. Repasky, B. Morley, D. Moen, M. Hayman, A. R. Nehrir   +5 more
doaj   +1 more source

Towards Developing a Micropulse Differential Absorption Lidar to Measure Atmospheric Temperature [PDF]

EPJ Web of Conferences, 2020
It has generally been assumed that differential absorption lidar (DIAL) systems are incapable of measuring atmospheric temperature with useful accuracy.
Stillwell Robert A., Spuler Scott M., Hayman Matthew, Bunn Catharine E., Repasky Kevin S.   +4 more
doaj   +1 more source

Development and Application of an airborne Differential Absorption Lidar for the Simultaneous Measurement of Ozone and Water Vapor in the Tropopause Region [PDF]

, 2012
A new, combined, lidar system has been developed that is able to simultaneously measure profiles of ozone and water vapor onboard of a comparatively small aircraft.
Fix, Andreas, Steinebach, Felix, Ehret, Gerhard, Wirth, Martin   +3 more
core  

High‐Detectivity InGaAs/GaAsP Superlattice PIN Photodetector with a Thin Absorber on GaAs substrate for 1100 nm Applications

Advanced Electronic Materials, EarlyView.
A high‐performance strain‐compensated InGaAs/GaAsP superlattice SWIR photodetector was successfully grown by MOCVD on a scalable 100 mm GaAs platform. Combining excellent structural quality with strong optoelectronic performance, the device delivers a low dark current density of 2.3 × 10−7 A/cm2 and a detectivity of 1.9 × 1011 Jones at 1100 nm ...
Rémy Tribout, Alexis Palais, Driss Mouloua, Mickael Martin, Frédérique Ducroquet, Sébastien Cavalaglio, Badreddine Smiri, Jeremy Da Fonseca, Jeremy Moeyaert, Clara Cornille, Franck Bassani, Charles Leroux, Veronika Letka, Vita Mergner, David Cooper, Evan Oudot, Christophe Duluard, Sophie Barbet, Christophe Jany, Thierry Baron   +19 more
wiley   +1 more source

Water Vapour Differential Absorption Lidar measurements at 935 nm using a Nd:YGG laser [PDF]

, 2010
A novel diode-pumped, single-frequency laser system emitting at 935 nm was developed to serve as the transmitter for water differential absorption lidar measurements. This laser uses Nd:YGG (Y3Ga5O12) as the active medium.
Meissner, Ansgar, Fix, Andreas, Löhring, Jens, Hoffmann, Dieter, Alpers, Matthias, Ehret, Gerhard   +5 more
core  

Comparative Assessment of Landsat‐8 and SPOT‐7 Satellite Data With Field Spectral Measurements for Estimating Plant Diversity in Sandy Grasslands

Biological Diversity, EarlyView.
We compared Landsat‐8 OLI, SPOT, and hyperspectral data for estimating vascular plant diversity in China's Hunshandak Sandland. SPOT data showed the strongest correlation with alpha diversity, followed by hyperspectral data, with Landsat‐8 performing the weakest.
Ying Ye, Jianxiong Lan, Xiaoyue Zhang, Yu Peng   +3 more
wiley   +1 more source

MERLIN (Methane Remote Sensing Lidar Mission): an Overview

EPJ Web of Conferences, 2016
The Methane Remote Sensing Lidar Mission (MERLIN), currently in phase B, is a joint cooperation between France and Germany on the development, launch and operation of a methane (CH4) monitoring satellite.
Pierangelo C., Millet B., Esteve F., Alpers M., Ehret G., Flamant P., Berthier S., Gibert F., Chomette O., Edouart D., Deniel C., Bousquet P., Chevallier F.   +12 more
doaj   +1 more source

Feasibility Study for an Airborne N2O Lidar [PDF]

EPJ Web of Conferences
Nitrous oxide, N2O is the third most important anthropogenic greenhouse gas after carbon dioxide and methane. The major source is nitrogen fertilization in croplands.
Kiemle Christoph, Fix Andreas, Fruck Christian, Wirth Martin   +3 more
doaj   +1 more source