Results 121 to 130 of about 2,030,862 (242)

The Scheimpflug lidar method

, 2017
The recent several years we developed the Scheimpflug lidar method. We combined an invention from the 19th century with modern optoelectronics such as diode lasers and CMOS array from the 21st century.
Sandra Török, Jansson, Samuel,, Brydegaard, Mikkel, Mikkel Brydegaard, Elin Malmqvist, Jim Larsson, Guangyu Zhao, Török, Sandra,, Török, Sandra, Malmqvist, Elin, Jansson, Samuel, Zhao, Guangyu, Malmqvist, Elin,, Larsson, Jim,, Brydegaard, Mikkel,, Larsson, Jim, Lund University., Samuel Jansson, Zhao, Guangyu,   +18 more
core   +1 more source

Vertical Redistribution of Ozone Precursor Proxies During Typhoon Peripheral Periods: Insights From MAX‐DOAS and GEOS‐Chem

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Typhoon peripheral conditions modulate the formation and atmospheric fate of ozone precursors, yet the vertical distribution and the underlying physical‐chemical drivers remain less constrained. Here, we examine the vertical profiles of ozone precursor proxies, including formaldehyde (HCHO), glyoxal (CHOCHO), and nitrogen dioxide (NO2), in the
Xicheng Li, Song Liu, Peng Zhang, Xue Zhang, Yali Li, Xingyi Wu, Jiaming Zhang, Yuchen Huang, Xiangyu Luan, Longchang Zhang, Xin Yang, Huizhong Shen, Jianhuai Ye, Chen Wang, Tzung‐May Fu, Lei Zhu   +15 more
wiley   +1 more source

The Role of Lightning in Atmospheric Chemistry

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Lightning has important effects on atmospheric constituents in primarily the middle and upper troposphere. We summarize the effects of lightning on atmospheric chemistry that have been published since the last major review in 2007. The estimates of NOx production by lightning (LNOx) are based on five methods: theoretical/laboratory estimates ...
Kenneth E. Pickering, Dale J. Allen, Heidi Huntrieser   +2 more
wiley   +1 more source

Wafer‐Scale Near‐Infrared Metalenses With High Performance and Low Cost

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
Widespread adoption of metalenses is constrained by prohibitive cost of wafer‐level fabrication. This work achieves 8‐inch wafer‐level fabrication with high uniformity (feature deviation < 5%) and reliable performance by step‐and‐repeat nanoimprint lithography.
Wanjiao Zhang, Meng Wang, Yunxiao Cai, Qiu Wang, Yuan Wang, Lu Han   +5 more
wiley   +1 more source

A New Lidar‐Based Observational Estimate for a Short‐Term Longwave High‐Cloud Feedback

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract High clouds play a substantial role in modulating the Earth's top‐of‐atmosphere radiative energy budget. Models project that changes in high‐cloud altitude and area in response to warming will have a net warming effect within the tropics. Yet, to our knowledge, a robust global observational constraint of a short‐term cloud feedback associated ...
J. A. Pilewskie, G. Cesana, A. Arouf, T. Vaillant de Guélis   +3 more
wiley   +1 more source

The concentration-estimation problem for multiple-wavelength differential absorption lidar [PDF]

, 1994
We are seeking to develop a reliable methodology for multi-chemicai detection and discrimination based upon multi-wavelength differential absorption lidar measurements.
Payne, A. N.
core  

Evaluation of Low‐Level Clouds, Temperature, and Surface Radiation Using a Model, Two Reanalyses, and Southern Ocean Observations

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Low‐level clouds over the Southern Ocean (SO) exert a strong influence on surface radiation, yet their representation in reanalyses and climate models remains uncertain. We evaluated cloud properties and surface radiative fluxes from ERA5, MERRA‐2, and the CAM‐ATRAS model using observations obtained over the SO by Japan's R/V Shirase during ...
Kazutoshi Sato, Jun Inoue, Hitoshi Matsui   +2 more
wiley   +1 more source

Dust Layer Height Leads Atmospheric Boundary Layer Height by 3 hr Over the Taklimakan Desert

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract The vertical distribution of dust modulates its radiative forcing and long‐range transport, yet the diurnal relationship between dust layer height (DLH) and atmospheric boundary layer height (ABLH) remains poorly constrained by observations.
Xingran Li, Tian Zhou, Dongsheng Wu, Zikai Lin, Yonghong Gu, Qili Gao, Zhongwei Huang, Xiaokai Song, Yufei Wang, Qingqing Dong   +9 more
wiley   +1 more source

Research on the Correction Algorithm for Ozone Inversion in Differential Absorption Lidar

Photonics
Due to the complex and variable nature of the atmospheric conditions, traditional multi-wavelength differential absorption lidar (DIAL) methods often suffer from significant errors when inverting ozone concentrations.
Leyong Li, Chenbo Xie, Jie Ji, Kunming Xing   +3 more
doaj   +1 more source

First Assessment of ICESat‐2 Summer Sea Ice Freeboard With Airborne Validation

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract ICESat‐2 has demonstrated solid performance in retrieving sea ice freeboard during winter, when sea ice surface types are well‐defined and leads provide reliable sea surface height references. Summer retrievals are challenging because melt ponds are not explicitly distinguished in the ATL07 surface classification and may be identified as ice ...
Ellen M. Buckley, Sahra Kacimi, Melinda Webster, Siddarth Harrison, Kutalmis Saylam, Nathan T. Kurtz, Rachel L. Tilling   +6 more
wiley   +1 more source