Results 11 to 20 of about 81,014 (268)

Lightning VHF Radiation Mapping Method for an Irregular Short‐Baseline Array

Earth and Space Science, 2023
Lightning very high frequency interferometry is a crucial tool for studying the development of lightning leaders within thunderclouds, and the conventional antenna array is composed of two coplanar orthogonal baselines.
Shanfeng Yuan, Xiushu Qie, Rubin Jiang, Zhuling Sun, Fengquan Li, Jing Yang   +5 more
doaj   +1 more source

Experiments on Improving Temperature and Humidity Profile Retrieval for Ground-based Microwave Radiometer

应用气象学报, 2020
Ground-based microwave radiometer (MWR) has a crucial role in scientific researches, weather modification service and climate change studies. MWR adopts passive remote sensing technology which has smaller volume, lower power consumption.
Zhang Xuefen, Wang Zhicheng, Mao Jiajia, Wang Zhangwei, Zhang Dongming, Tao Fa   +5 more
doaj   +1 more source

Vertical profiles of black carbon measured by a micro-aethalometer in summer in the North China Plain [PDF]

Atmospheric Chemistry and Physics, 2016
Black carbon (BC) is a dominant absorber in the visible spectrum and a potent factor in climatic effects. Vertical profiles of BC were measured using a micro-aethalometer attached to a tethered balloon during the Vertical Observations of trace Gases ...
L. Ran, Z. Deng, X. Xu, P. Yan, W. Lin, Y. Wang, P. Tian, P. Wang, W. Pan, D. Lu   +9 more
doaj   +1 more source

Correction for the Attenuation Due to Atmospheric Gas and Stratiform Clouds in Triple-Frequency Radar Observations of the Microphysical Properties of Snowfall

Remote Sensing, 2023
For triple-frequency radar, the attenuation attributed to atmospheric gases and stratiform clouds is diverse due to different snowfall microphysical properties, particularly in regions far from the radar.
Yue Chang, Hongbin Chen, Xiaosong Huang, Yongheng Bi, Shu Duan, Pucai Wang, Jie Liu   +6 more
doaj   +1 more source

Assimilating compact phase space retrievals of atmospheric composition with WRF-Chem/DART: a regional chemical transport/ensemble Kalman filter data assimilation system

Geoscientific Model Development, 2016
This paper introduces the Weather Research and Forecasting Model with chemistry/Data Assimilation Research Testbed (WRF-Chem/DART) chemical transport forecasting/data assimilation system together with the assimilation of compact phase space retrievals of
A. P. Mizzi, A. F. Arellano Jr., D. P. Edwards, J. L. Anderson, G. G. Pfister   +4 more
doaj   +1 more source

The “ideal” spectrograph for atmospheric observations [PDF]

Atmospheric Measurement Techniques, 2021
Abstract. Spectroscopy of scattered sunlight in the near-UV to near-IR spectral ranges has proven to be an extremely useful tool for the analysis of atmospheric trace gas distributions. A central parameter for the achievable sensitivity and spatial resolution of spectroscopic instruments is the étendue (product of aperture angle and entrance area) of ...
U. Platt, U. Platt, T. Wagner, J. Kuhn, J. Kuhn, T. Leisner   +5 more
openaire   +7 more sources

Atmospheric Composition Observations [PDF]

, 2016
The composition of the atmosphere is a critical factor in understanding the nature and magnitude of processes associated with the planet’s energy balance, clouds and precipitation, biogeochemical cycling of nutrients, and public health and welfare. A detailed understanding of trace gases, aerosol particles, and hydrometeors is challenging due to the ...
openaire   +3 more sources

Large Amounts of Water Vapor Were Injected into the Stratosphere by the Hunga Tonga–Hunga Ha’apai Volcano Eruption

Atmosphere, 2022
The Hunga Tonga–Hunga Ha’apai (Tonga) injected only small amount of SO2 into the stratosphere, while our analyses of the Microwave Limb Sounder (MLS) measurements show that a massive amount of water vapor was directly injected into the stratosphere by ...
Jingyuan Xu, Dan Li, Zhixuan Bai, Mengchu Tao, Jianchun Bian   +4 more
doaj   +1 more source

Three-Dimensional Mapping on Lightning Discharge Processes Using Two VHF Broadband Interferometers

Remote Sensing, 2022
Lightning Very-high-frequency (VHF) broadband interferometer has become an effective approach to map lightning channels in two dimensions with high time resolution.
Zhuling Sun, Xiushu Qie, Mingyuan Liu, Rubin Jiang, Hongbo Zhang   +4 more
doaj   +1 more source

A New Hybrid Algorithm to Image Lightning Channels Combining the Time Difference of Arrival Technique and Electromagnetic Time Reversal Technique

Remote Sensing, 2021
Very-high-frequency (VHF) electromagnetic signals have been well used to image lightning channels with high temporal and spatial resolution due to their capability to penetrate clouds.
Fengquan Li, Zhuling Sun, Mingyuan Liu, Shanfeng Yuan, Lei Wei, Chunfa Sun, Huimin Lyu, Kexin Zhu, Guoying Tang   +8 more
doaj   +1 more source