Results 21 to 30 of about 278,436 (276)

Estimating fractional cover of saltmarsh vegetation species in coastal wetlands in the Yellow River Delta, China using ensemble learning model

Frontiers in Marine Science, 2022
Saltmarshes in coastal wetlands provide important ecosystem services. Satellite remote sensing has been widely used for mapping and classification of saltmarsh vegetation, however, medium-spatial-resolution satellite datasets such as Landsat-series ...
Zhanpeng Wang, Zhanpeng Wang, Yinghai Ke, Dan Lu, Zhaojun Zhuo, Qingqing Zhou, Yue Han, Peiyu Sun, Zhaoning Gong, Demin Zhou   +9 more
doaj   +1 more source

Evidence of nitric acid uptake in warm cirrus anvil clouds during the NASA TC4 campaign [PDF]

, 2010
Uptake of HNO3 onto cirrus ice may play an important role in tropospheric NOx cycling. Discrepancies between modeled and in situ measurements of gas-phase HNO3 in the troposphere suggest that redistribution and removal mechanisms by cirrus ice have been ...
Bansemer, Aaron, Dibb, Jack E., Heymsfield, Andrew J, Rogers, David, Scheuer, Eric, Twohy, Cynthia   +5 more
core   +2 more sources

SAR-to-Optical Image Translation and Cloud Removal Based on Conditional Generative Adversarial Networks: Literature Survey, Taxonomy, Evaluation Indicators, Limits and Future Directions

Remote Sensing, 2023
Due to the limitation of optical images that their waves cannot penetrate clouds, such images always suffer from cloud contamination, which causes missing information and limitations for subsequent agricultural applications, among others.
Quan Xiong, Guoqing Li, Xiaochuang Yao, Xiaodong Zhang   +3 more
doaj   +1 more source

Quantifying wet scavenging processes in aircraft observations of nitric acid and cloud condensation nuclei [PDF]

, 2006
Wet scavenging is an important sink term for many atmospheric constituents. However, production of precipitation in clouds is poorly understood, and pollutant removal through wet scavenging is difficult to separate from removal through dry scavenging ...
A. Stohl, Ackerman, Adams, Adams, Albrecht, Andronache, Andronache, Asman, Baker, Baumgardner, Brimblecombe, Brock, Brown, C. A. Brock, Chate, Chatfield, Conant, Covert, Crutzen, Dusek, Frost, Galloway, Garrett, Hanson, Heymsfield, Holloway, J. A. Neuman, J. S. Holloway, Kulmala, L. Avey, Lance, Liu, Liu, Longley, Mari, Neuman, Neuman, Neuman, P. I. Palmer, Parrish, Radke, Rosenfeld, Slinn, Stohl, Stohl, T. B. Ryerson, T. J. Garrett, Twomey, Wentz, Wilson   +49 more
core   +1 more source

Thin cloud removal from single satellite images

Optics Express, 2014
A novel method for removing thin clouds from single satellite image is presented based on a cloud physical model. Given the unevenness of clouds, the cloud background is first estimated in the frequency domain and an adjustment function is used to suppress the areas with greater gray values and enhance the dark objects.
Jun, Liu, Xing, Wang, Min, Chen, Shuguang, Liu, Xiran, Zhou, Zhenfeng, Shao, Ping, Liu   +6 more
openaire   +2 more sources

The Circumbinary Outflow: A Protostellar Outflow Driven by a Circumbinary Disk [PDF]

, 2009
The protostellar outflows have indispensable role in the formation of single stars, because they carry off the excess angular momentum from the centre of the shrinking gas cloud, and permits further collapse to form a star.
Banerjee, Bodenheimer, Goodwin, Hirano, Kudoh, Larson, Machida, Machida, Machida, Masahiro N. Machida, Masunaga, Matsumoto, Nakano, Shu-ichiro Inutsuka, Tomisaka, Tomoaki Matsumoto   +15 more
core   +1 more source

Correction of "Cloud Removal By Fusing Multi-Source and Multi-Temporal Images"

, 2017
Remote sensing images often suffer from cloud cover. Cloud removal is required in many applications of remote sensing images. Multitemporal-based methods are popular and effective to cope with thick clouds.
Cheng, Qing, Li, Xinghua, Li, Zhiwei, Shen, Huanfeng, Zhang, Chengyue   +4 more
core   +1 more source

Tails of the Unexpected: The Interaction of an Isothermal Shell with a Cloud

, 2010
A new mechanism for the formation of cometary tails behind dense clouds or globules is discussed. Numerical hydrodynamical models show that when a dense shell of swept-up matter overruns a cloud, material in the shell is focussed behind the cloud to form
Binette, Boss, Cecil, Chu, Cooper, Dyson, Dyson, Falle, Falle, J. M. Pittard, Klein, Leào, López-Martin, Matsuura, Meaburn, Meaburn, Melnick, Nittmann, O'Dell, O'Dell, Ohyama, Pittard, Pittard, Pittard, Rózyczka, Tenorio-Tagle, Tenorio-Tagle, Tenorio-Tagle, Westmoquette, Westmoquette   +29 more
core   +1 more source

Stochastic processes, galactic star formation, and chemical evolution. Effects of accretion, stripping, and collisions in multiphase multi-zone models [PDF]

, 2005
This paper reports simulations allowing for stochastic accretion and mass loss within closed and open systems modeled using a previously developed multi-population, multi-zone (halo, thick disk, thin disk) treatment.
Casuso, Chiappini, Cignoni, Comins, Copi, Copi, D. Galli, de Mello, Feldman, Ferrini, Ferrini, Franco, G. Valle, Galli, Gerola, Grevesse, Hellsten, Hébard, Kroupa, Lejeune, Lubowich, Lynden-Bell, Matteucci, Pardi, Quilis, S. N. Shore, Schulman, Shore, Shore, Shore, Tinsley, Travaglio, Valle, Vidal-Madjar, Vollmer, Vollmer   +35 more
core   +2 more sources

Search for Anderson localization of light by cold atoms in a static electric field

, 2019
We explore the potential of a static electric field to induce Anderson localization of light in a large three-dimensional (3D) cloud of randomly distributed, immobile atoms with a degenerate ground state (total angular momentum $J_g = 0$) and a three ...
Skipetrov, S. E., Sokolov, I. M.
core   +2 more sources