Results 121 to 130 of about 2,423,184 (252)

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, Volume 42, Issue 6, Page 3565-3583, October 2026.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi, Yunes Alqudsi, Alhasan Ali Alharbi, Mohammed Basheer Mohiuddin   +3 more
wiley   +1 more source

A Two Micron Coherent Differential Absorption Lidar Development [PDF]

, 2010
A pulsed, 2-micron coherent Differential Absorption Lidar (DIAL)/Integrated Path Differential Absorption (IPDA) transceiver, developed under the Laser Risk Reduction Program (LRRP) at NASA, is integrated into a fully functional lidar instrument.
Chen, Songsheng, Trieu, Bo C., Beyon, Jeffrey Y., Kavaya, Michael J., Bai, Yingxin, Petzar, Paul J., Yu, Jirong, Petros, Mulugeta, VanValkenburg, Randal L., Koch, Grady J., Singh, Upendra N.   +10 more
core  

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Alluvial ridge morphology on avulsing rivers

Sedimentology, Volume 73, Issue 6, Page 2311-2337, October 2026.
ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley   +1 more source

Simulating Regional‐Scale Aerosol Radiative Effects of Wildfire Smoke Using a High‐Resolution Coupled Meteorology‐Chemistry Model: HRRR‐Chem

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract Wildfires are increasing in frequency and intensity, strongly influencing both regional air quality and the Earth's radiation budget via their aerosol emissions. Relying on an unparalleled observational data set from the 2019 NOAA/NASA FIREX‐AQ campaign, this study quantifies the direct radiative effects of two wildfires using the HRRR‐Chem ...
Minsu Choi, Ravan Ahmadov, J. L. Schnell, Johana Romero‐Alvarez, Sudheer Bhimireddy, Haiqin Li, Joshua P. Schwarz, Pedro Campunzano Jost, Hongyu Guo, Jose L. Jimenez, Pawan Gupta, Thomas F. Eck, Philippe Goloub, Olga Kalashnikova, Chuanyu Xu, Fangjun Li, R. Bradley Pierce, Georg A. Grell   +17 more
wiley   +1 more source

Phytoplankton Size Structure Controls the Bio‐Optical Anomaly of Antarctic Waters

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Phytoplankton in the Southern Ocean strongly influence global biogeochemical cycles, but the region's remoteness limits in situ monitoring. Satellite ocean color enables synoptic monitoring of phytoplankton dynamics by retrieving chlorophyll‐a concentration (Chl‐a).
Xuerong Sun, Robert J. W. Brewin, Giorgio Dall’Olmo, Jaime Pitarch, Thomas G. Bell, Bethany Wilkinson, Dionysios E. Raitsos, Hendrik Jan van der Woerd, Shubha Sathyendranath   +8 more
wiley   +1 more source

Significant Reduction in Ethane Emissions in the Denver‐Julesburg Basin From 2015 to 2021 From Oil and Natural Gas Operations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Top‐down studies of methane (CH4) emissions often use the average ethane‐to‐methane (C2/C1) ratio of wellhead gas in a basin to attribute emissions to thermogenic or biogenic sources. Biogenic CH4 sources (ruminants, wetlands, landfills, and other methanogenic sources) do not co‐produce ethane (C2H6); the presence of C2H6 indicates a ...
Mercy C. Ngulat, Arthur Santos, Anna L. Hodshire, Timothy L. Vaughn, Hannah M. Daley, Russell R. Dickerson, Petter Weibring, Dirk Richter, James Walega, Alan Fried, Daniel Zimmerle   +10 more
wiley   +1 more source

First attempt to monitor atmospheric glyoxal using differential absorption lidar

, 2012
Glyoxal (CHOCHO), as an indicator of photochemical “hot spots”, was for the first time the subject of a differential absorption lidar (DIAL) campaign. The strongest absorption line of glyoxal in the blue wavelength region – 455.1 nm – was chosen as the ...
Hu, Jiandong, Alexandros Papayannis, Mei, Liang, Patrik Lundin, Guangyu Zhao, Svanberg, Sune, Sune Svanberg, Zhao, Guangyu, Liang Mei, Vrekoussis, Mihalis, Papayannis, Alexandros, Somesfalean, Gabriel, Bood, Joakim, Gabriel Somesfalean, Jiandong Hu, Mihalis Vrekoussis, Lundin, Patrik, Joakim Bood   +17 more
core   +1 more source

Spaceborne Far‐Infrared Signal Simulations Over the Antarctic Plateau With Temperature‐Dependent Ice Cloud Optical Properties

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract Longwave cloud radiative effects significantly influence variability in global and regional Earth systems. However, there have been very few, if any, measurements of the far‐infrared (FIR) radiation over the polar regions, where about half of the outgoing longwave radiation is in the FIR spectrum. This motivated the Polar Radiant Energy in the
Tong Ren, Ping Yang, Xianglei Huang
wiley   +1 more source

Differential absorption lidar for water vapour in the atmosphere [PDF]

, 2002
Looks at the development of Differential Absorption Lidar based on diode lasers for profiling the temporal and vertical distribution of water vapour in the atmosphere.
Bae, Kwang-Ho
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