Results 21 to 30 of about 86,915 (297)

Satellite-borne active and passive instruments for remote sensing of heavy rain in China: A review

暴雨灾害, 2019
In this paper, the domestic research results of heavy rain in China by using instruments of spectral remote sensing, passive microwave remote sensing and active microwave radar on-board satellite are reviewed.
Yunfei FU
doaj   +1 more source

Absolute radiometric calibration evaluation of the thermal infrared spectrometer onboard SDGSAT-1

International Journal of Digital Earth, 2023
A thermal infrared spectrometer is an important sensor onboard the SDGSAT-1 dedicated to serving the 2030 Agenda for Sustainable Development of the United Nations.
Yonghong Hu, Xiao-Ming Li, Changyong Dou, Gensuo Jia, Zhuoyue Hu, Anlun Xu, Yongzheng Ren, Lin Yan, Ning Wang, Zhenzhen Cui, Fansheng Chen   +10 more
doaj   +1 more source

Characterization of Bias in Fengyun-4B/AGRI Infrared Observations Using RTTOV

Remote Sensing, 2023
As China’s first operational second-generation geostationary satellite, Fengyun-4B carries the newly developed Advanced Geostationary Radiation Imager (AGRI), which adds a low-level water vapor detection channel and an adjusted spectrum range of four ...
Zhi Zhu, Chunxiang Shi, Junxia Gu
doaj   +1 more source

Cold Dark Matter Substructure and Galactic Disks I: Morphological Signatures of Hierarchical Satellite Accretion [PDF]

, 2007
(Abridged) We conduct a series of high-resolution, dissipationless N-body simulations to investigate the cumulative effect of substructure mergers onto thin disk galaxies in the context of the LCDM paradigm of structure formation. Our simulation campaign
Bullock, James S., Kazantzidis, Stelios, Kravtsov, Andrey V., Moustakas, Leonidas A., Zentner, Andrew R.   +4 more
core   +3 more sources

Forest fire detection based on temporal and spatial correction of background brightness temperature using GF-4 PMI data [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Forest fires threaten human life and property, making timely and accurate fire monitoring essential for fire prevention and control efforts. Satellite remote sensing meets the requirements of large-scale, high-frequency observations for forest fire ...
P. Cheng, H. Sui, J. Wang, L. Hua, J. Liu, Q. Zhou, Y. Zeng   +6 more
doaj   +1 more source

A Petal of the Sunflower: Photometry of the Stellar Tidal Stream in the Halo of Messier 63 (NGC 5055) [PDF]

, 2011
We present surface photometry of a very faint, giant arc feature in the halo of the nearby spiral galaxy NGC 5055 (M63) that is consistent with being a part of a stellar stream resulting from the disruption of a dwarf satellite galaxy. This faint feature
Abazajian, Adelman-McCarthy, Bakos, Barway, Bekki, Bell, Belokurov, Belokurov, Bullock, Bush, Byrd, Chonis, Claver, David Martínez-Delgado, de Vaucouleurs, Fouque, Gary J. Hill, Gil de Paz, Gil de Paz, Grillmair, Hernquist, Ibata, Ibata, Ignacio Trujillo, Jansen, Johnston, Johnston, Kannan, Law, Majewski, Martin, Martínez-Delgado, Martínez-Delgado, Martínez-Delgado, Martínez-Delgado, McConnachie, Mouhcine, Peñarrubia, Peñarrubia, Purcell, Purcell, R. Jay Gabany, Ray Gralak, Robaina, Robertson, Sancisi, Schlegel, Shang, Steven R. Majewski, Taylor S. Chonis, Thilker, Thornley, Trujillo, van der Kruit, Wehner, Yanny, Yoon, York, Zheng   +58 more
core   +2 more sources

The Surface Brightness of MegaConstellation Satellite Trails on Large Telescopes [PDF]

Publications of the Astronomical Society of the Pacific, 2020
Abstract On large telescopes, the trails produced by MegaConstellation satellites will be significantly defocused due to their close proximity. As a result, their apparent surface brightness will be, under a range of conditions, almost constant during their apparent sweep across the focal plane.
openaire   +2 more sources

Quantifying the influence of snow over sea ice morphology on L-band passive microwave satellite observations in the Southern Ocean [PDF]

The Cryosphere
Antarctic snow on sea ice can contain slush, snow ice, and stratified layers, complicating satellite retrieval processes for snow depth, ice thickness, and sea ice concentration. The presence of moist and brine-wetted snow alters microwave snow emissions
L. Zhou, L. Zhou, J. Stroeve, J. Stroeve, J. Stroeve, V. Nandan, V. Nandan, R. Willatt, R. Willatt, S. Xu, S. Xu, W. Zhu, S. Kacimi, S. Arndt, S. Arndt, Z. Yang   +15 more
doaj   +1 more source

Using multi-satellite microwave remote sensing observations for retrieval of daily surface soil moisture across China

Water Science and Engineering, 2019
The objective of this study was to retrieve daily composite soil moisture by jointly using brightness temperature observations from multiple operating satellites for near real-time application with better coverage and higher accuracy. Our approach was to
Ke Zhang, Li-jun Chao, Qing-qing Wang, Ying-chun Huang, Rong-hua Liu, Yang Hong, Yong Tu, Wei Qu, Jin-yin Ye   +8 more
doaj   +1 more source

Thick-disk evolution induced by the growth of an embedded thin disk [PDF]

, 2010
We perform collisionless N-body simulations to investigate the evolution of the structural and kinematical properties of simulated thick disks induced by the growth of an embedded thin disk.
Amina Helmi, Ardi, Barnes, Barnes, Baugh, Belokurov, Binney, Bournaud, Buitrago, Bullock, Buser, Callegari, Chiba, Elmegreen, Ferguson, Ferguson, Font, Gauthier, Girard, Hayashi, Hopkins, Huang, Ibata, Ibata, Ivezić, Jurić, Kalirai, Kazantzidis, Kazantzidis, Kazantzidis, Kazantzidis, Majewski, Malin, Martínez-Delgado, Matthews, Mayer, Navarro, Newberg, Peng, Purcell, Sellwood, Shang, Sharma, Stadel, Stelios Kazantzidis, Tormen, Vitvitska, White, Yanny, Yoachim, Yoachim, Zeldovich, Álvaro Villalobos   +52 more
core   +3 more sources