Results 11 to 20 of about 81 (53)

Astroclimatic statistics at the Sayan Solar Observatory

Solar-Terrestrial Physics, 2020
The paper analyzes meteorological and optical characteristics of the atmosphere at the Sayan Solar Observatory (SSO) and the future 3 m Large Solar Telescope (LST-3).
Shikhovtsev A.Yu., Kovadlo P.G., Kiselev A.V.   +2 more
doaj   +1 more source

Astroclimate at San Pedro Mártir I: 2004-2008 Seeing Statistics from the TMT Site Testing Data [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
Accepted for publication (2012 June 14) in MNRAS, 15 pages, 16 Figures, 8 ...
Sánchez, L. J., Cruz-González, I., Echevarría, J., Ruelas-Mayorga, A., García, A. M., Avila, R., Carrasco, E., Carramiñana, A., Nigoche-Netro, A.   +8 more
openaire   +3 more sources

Astroclimes – measuring the abundance of CO2 and CH4 in the Earth’s atmosphere using astronomical observations

RAS Techniques and Instruments
ABSTRACT Monitoring the abundance of greenhouse gases is necessary to quantify their impact on global warming and climate change. Carbon dioxide ($\mathrm{CO_{2}}$) and methane ($\mathrm{CH_{4}}$) are the two most important greenhouse gases when it comes to global warming. Although a number of satellites and ground-based networks measure
Marcelo Aron Fetzner Keniger, David Armstrong, Matteo Brogi, Siddharth Gandhi, Marina Lafarga   +4 more
openaire   +3 more sources

Ecuador's Astroclimate, 2010–2025

Country-scale astro-climatology and site-screening for Ecuador, integrating reanalysis, satellite, and geospatial layers into operational products for observatories. From ERA5 (2010–2025) we derive three night-time metrics—photometric clear-sky fraction (CSNF), precipitable water vapour (PWV), and 200-hPa wind speed (V200)—and combine them into an ...
openaire   +1 more source

Long-term astroclimate characterization of the Uluwati site on the Pamir Plateau from ERA5 reanalysis

Monthly Notices of the Royal Astronomical Society
ABSTRACT We present a long-term astroclimatic assessment of the Uluwati high-altitude site on the eastern Pamir Plateau, southwestern Xinjiang, China, using reanalysis data. Six key nighttime atmospheric parameters relevant to optical and infrared astronomy are analysed: cloud cover, temperature, relative humidity, precipitable water ...
Jicheng Zhang, Ali Esamdin, Yong Zhao, Guojie Feng, Chunhai Bai, Xuan Zhang, Wenbo Gu, Letian Wang, Guangxin Pu, Xinliang Wang   +9 more
openaire   +1 more source

Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data

Monthly Notices of the Royal Astronomical Society
ABSTRACT The Muztagh-Ata site, an excellent high-altitude ground-based astronomical observing site was discovered and monitored in the eastern part of the Pamir Plateau in the southwestern Xinjiang Uygur Autonomous Region of China. This site has been systematically monitored using various observational parameters since the spring of 2017.
Jicheng Zhang, Yong Zhao, Jian Gao, Ali Esamdin, Wenzhao Zhang, Haibo Yuan, Guojie Feng, Hubiao Niu, Wenbo Gu, Xuan Zhang, Chunhai Bai   +10 more
openaire   +1 more source

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth. [PDF]

Sensors (Basel)
Balega Y, Bubnov G, Chekushkin A, Dubrovich V, Edelman V, Gunbina A, Kapustin S, Khabarova T, Kukushkin D, Lapkin I, Mansfeld M, Maruhno A, Parshin V, Raevskiy A, Stolyarov V, Tarasov M, Valyavin G, Vdovin V, Yakopov G, Yusupov R, Zemlyanukha P, Zinchenko I.   +21 more
europepmc   +1 more source

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Season Variations of Astroclimate Parameters for the Terskol Observatory

Astronomy Reports, 2023
We present results of the study of seasonal variations of the astroclimate parameters for the Terskol Observatory: wind speed at the level of 200 mbar as a measure of the adaptive optics (AO) applicability, the wind speed altitude distribution, determining the requirements for the AO performance, moisture content to assess the possibility of AO ...
Bolbasova L A, L A Bolbasova
exaly   +2 more sources

Astroclimate parameters of the surface layer in the Sayan Solar Observatory

Proceedings of SPIE, 2009
High-altitude profiles of the parameters of atmospheric air currents in the lower surface layer were measured with the use of a meteorological mast of 32 m in height. A mobile ultrasonic meteosystem was used for the measurements. The theory of similarity for turbulence in anisotropic boundary layer has been verified. The measured vertical profiles of
P G Kovadlo, V V Nosov
exaly   +2 more sources

Result of measurements of the astroclimate characteristics of astronomical telescopes in the mountain observatories

Proceedings of SPIE, 2009
The paper describes the results of the measurements of telescope actroclimate characteristics in the mountains on the lake Baikal shore and in the Sayan foothills. For the measurements a mobile ultrasonic meteorological system was used. It is shown that the place of arrangement of telescopes on the lake Baikal shore is favorable to daytime observations,
P G Kovadlo, V V Nosov
exaly   +2 more sources