In this paper, based on the observational data of 1995 in the Chinese Antarctic Great Wall Station the snowstorm is studied synoptically. It is found that there are two kinds of snowstorms with different physical char...In this paper, based on the observational data of 1995 in the Chinese Antarctic Great Wall Station the snowstorm is studied synoptically. It is found that there are two kinds of snowstorms with different physical characteristics and that the happening of snowstorm is always accompanied by a near-ground level inversion layer. The function of the inversion layer is analyzed, too. It is indicated that the strong ESE-wind type snowstorm is mainly caused by katabatic wind and gradient wind together. This idea is new and different from the general concept that there is no katabatic wind in the western Antarctic area.展开更多
对凡尔纳的作品,我并不陌生。记得在初中时就看过柯克·道格拉斯演的《白浪滔滔伏海妖》(香港译法),是《海底两万里格》(Twenty Thousand Leagues Under the Sea)的好莱坞电影版本。50年后的今天,电影中的大乌贼和"鹦鹉螺"...对凡尔纳的作品,我并不陌生。记得在初中时就看过柯克·道格拉斯演的《白浪滔滔伏海妖》(香港译法),是《海底两万里格》(Twenty Thousand Leagues Under the Sea)的好莱坞电影版本。50年后的今天,电影中的大乌贼和"鹦鹉螺"号潜艇记忆犹新。凡尔纳一生写出50多本以科幻为主体的小说。在1870年写完《海底两万里格》。五年后。展开更多
Transiting extrasolar planets(exoplanets),especially those orbiting bright stars, are desired for study of the diversity of planetary compositions, internal structures and atmospheres beyond our solar system. Dome A a...Transiting extrasolar planets(exoplanets),especially those orbiting bright stars, are desired for study of the diversity of planetary compositions, internal structures and atmospheres beyond our solar system. Dome A at Antarctica is a promising site for planetary transit surveys,where the continuous darkness and the large clear-sky fraction in the winter months greatly enhance the detection efficiency. The Chinese Small Telescope ARray and the Antarctic Survey Telescopes are the first facilities that have been operated at Dome A for use in exoplanet surveys. To increase the sky coverage, a low-temperature-resistant wide-field robotic telescope, named the bright star survey telescope(BSST), has been developed to join the ongoing planetary transit survey in Antarctica. The BSST has an aperture size of 300 mm and is equipped with a largeframe 4K×4K CCD camera to receive starlight from a 3.°4×3.°4 field of view. The BSST was operated at Lijiang observatory in April and May 2015 for a test run.Photometric precision of 3.5 mmag was achieved for stars with V～11 mag using 75 s exposures. The transiting events of two Jupiter-size exoplanets, HAT-P-3b and HATP-12 b, were observed on May 10 and May 20, 2015,respectively.展开更多
文摘In this paper, based on the observational data of 1995 in the Chinese Antarctic Great Wall Station the snowstorm is studied synoptically. It is found that there are two kinds of snowstorms with different physical characteristics and that the happening of snowstorm is always accompanied by a near-ground level inversion layer. The function of the inversion layer is analyzed, too. It is indicated that the strong ESE-wind type snowstorm is mainly caused by katabatic wind and gradient wind together. This idea is new and different from the general concept that there is no katabatic wind in the western Antarctic area.
文摘对凡尔纳的作品,我并不陌生。记得在初中时就看过柯克·道格拉斯演的《白浪滔滔伏海妖》(香港译法),是《海底两万里格》(Twenty Thousand Leagues Under the Sea)的好莱坞电影版本。50年后的今天,电影中的大乌贼和"鹦鹉螺"号潜艇记忆犹新。凡尔纳一生写出50多本以科幻为主体的小说。在1870年写完《海底两万里格》。五年后。
基金supported by the Astronomical Project for the Chinese Antarctic Inland Stationthe SOC Program(CHINARE2012-02-03+12 种基金CHINARE2013-02-03CHINARE2014-02-03and CHINARE2015-02-03)the National Basic Research Program of China(2013CB834905 and 2015CB857005)Q.Tian is supported by the National Natural Science Foundation of China(11503023)the Natural Science Foundation of Shanghai(14ZR1444100)the Polar Science Innovation Fund for Young Scientists of Polar Research Institute of China(CX20130201)P.Jiang is supported by the National Natural Science Foundation of China(11233002 and11203022)H.Zhou is supported by the National Natural Science Foundation of China(1147302511421303 and 11033007)S.Zhang is supported by the National Natural Science Foundation of China(11573024)T.Ji is supported by the National Natural Science Foundation of China(11503022)the Natural Science Foundation of Shanghai(15ZR1444200)
文摘Transiting extrasolar planets(exoplanets),especially those orbiting bright stars, are desired for study of the diversity of planetary compositions, internal structures and atmospheres beyond our solar system. Dome A at Antarctica is a promising site for planetary transit surveys,where the continuous darkness and the large clear-sky fraction in the winter months greatly enhance the detection efficiency. The Chinese Small Telescope ARray and the Antarctic Survey Telescopes are the first facilities that have been operated at Dome A for use in exoplanet surveys. To increase the sky coverage, a low-temperature-resistant wide-field robotic telescope, named the bright star survey telescope(BSST), has been developed to join the ongoing planetary transit survey in Antarctica. The BSST has an aperture size of 300 mm and is equipped with a largeframe 4K×4K CCD camera to receive starlight from a 3.°4×3.°4 field of view. The BSST was operated at Lijiang observatory in April and May 2015 for a test run.Photometric precision of 3.5 mmag was achieved for stars with V～11 mag using 75 s exposures. The transiting events of two Jupiter-size exoplanets, HAT-P-3b and HATP-12 b, were observed on May 10 and May 20, 2015,respectively.
