China and Australia have been collaborating in Antarctic activities since the early 1980s and that collaboration has grown and become more formalized as China＇s Antarctic program has expanded. This collaboration has ...China and Australia have been collaborating in Antarctic activities since the early 1980s and that collaboration has grown and become more formalized as China＇s Antarctic program has expanded. This collaboration has involved personnel exchange, logistic support, environmental protection and particularly scientific research. China and Australia have signed a series of memorandums and treaties of friendship and cooperation on Antarctic activities in the past few years. Relevant mechanisms of cooperation between expedition plans and programs have been established, and the exchange and cooperation in people, science and technology, services, and supplies are undertaken across a range of organizations. Here we overview the history of the bilateral collaboration and provide a few examples of the many areas of cooperation. These examples are focused on activities in Hobart, the key centre of the Australian Antarctic program.展开更多
The 1228 km over-snow traverse route between the Chinese Zhongshan Station, on the coast of Prydz Bay, and Dome-A, at 4091 m elevation the highest point of the East Antarctic ice sheet, has been the focus of CHINARE s...The 1228 km over-snow traverse route between the Chinese Zhongshan Station, on the coast of Prydz Bay, and Dome-A, at 4091 m elevation the highest point of the East Antarctic ice sheet, has been the focus of CHINARE surface meteorological and climate studies since 2002. A network of seven Automatic Weather Stations has been deployed along this section, including at Dome-A itself, and some of these have now provided nearly-hourly data for over a decade. Atmospheric boundary layer turbulence and radiation observations have been made over the near-coastal ice sheet inland of Zhongshan and surface turbulence measurements using an ultrasonic anemometer system have also been made in the deep interior of the ice sheet. Summer GPS radiosonde soundings of the atmospheric boundary layer have been made at Kunlun Station, near Dome-A. In this paper these observations are combined to provide a comprehensive overview of the meteorological regime of this region of the ice sheet, its climate variability, and as a reference for future study of climate change. This includes investigation of the variation of surface climate features with elevation and distance from the coast, the height and structure of the boundary layer over the ice sheet, and seasonal and regional changes in ice/snow-air interactions, including turbulent and radiative energy fluxes. The air temperature and snow temperature between the coastal Zhongshan and Dome-A on the inland plateau have not changed significantly in the past decade compared with the inter-annual variability.展开更多
Analysis of sensible heat flux （ Qh ）, latent heat flux （ Qe ）, Richardson number （Ri） ,bulk transport coefficient （Cd） and katabatic windsare presented by using the meteorological data in the near surface lay...Analysis of sensible heat flux （ Qh ）, latent heat flux （ Qe ）, Richardson number （Ri） ,bulk transport coefficient （Cd） and katabatic windsare presented by using the meteorological data in the near surface layer from an automatic weather station （AWS） in Princess Elizabeth Land, East Antarctica ice sheet and the data of corresponding period at Zhongshan station in 2002. It shows that annual mean air temperature at LGB69 is -25.6℃, which is 16.4℃ lower than that at Zhongshan, where the elevation is lower and located on the coast. The temperature lapse rate is about 1.0℃/110 m for the initial from coast to inland. The turbulence heat flux at LGB69 displays obvious seasonal variations with the average sensible heat flux -17.9 W/m^2 and latent heat flux -0.9 W/m^2. The intensity （Qh ＋ Qe ） of coolling source is - 18.8 W/m^2 meaning the snow surface layer obtains heat from atmosphere. The near surface atmosphere is near-neutral stratified with bulk transport coefficients （Cd） around 2.8 ×10^-3 ,and it is near constant when the wind speed higher than 8 m/s. The speed and the frequency of easterly Katabatic winds at LGB69 were higher than that at Zhongshan Station.展开更多
The highest part of the East Antarctic Ice Sheet, more than 4000 m above sea level, has been an area that has seen a considerable scientific research effort undertaken by the Chinese National Antarctic Research Expedi...The highest part of the East Antarctic Ice Sheet, more than 4000 m above sea level, has been an area that has seen a considerable scientific research effort undertaken by the Chinese National Antarctic Research Expedition, and its international collaborators, since January 2005. That includes the establishment of the most remote Of the Chinese Antarctic stations, Kunlun, at Dome A in 2009. However, the exploration and mapping of this region had been commenced many decades earlier, most notably by inland traverses of the Union of Soviet Socialist Republics during the 1957-1958 International Geophysical Year 0GY） and later; and the extensive surveys of Antarctic surface and sub-ice topography by airborne radio-echo sounding made by the US National Science Foundation-Scott Polar Research Institute-Technical University of Denmark （NSF-SPRI-TUD） in the late-1960s and the 1970s. Here we provide a history of the activities and achievements of these earlier programs. Recent topographic maps of the ice sheet surface in the Dome A region, produced using Chinese GPS data and satellite altimetry, have shown the maps compiled from the earlier data were remarkably accurate.展开更多
This issue of Advances in Polar Science exclusively contains papers that are about polar research programs and activities of countries in the Asian region. Although several Asian nations (Japan, India, China, Republic...This issue of Advances in Polar Science exclusively contains papers that are about polar research programs and activities of countries in the Asian region. Although several Asian nations (Japan, India, China, Republic of Korea) have been involved in Antarctic research for more than 30 years, there is a new and growing interest in the Asian region in scientific activity in both the Arctic and Antarctic.展开更多
It is now more than a decade since the twenty-first Chinese National Antarctic Research Expedition （21st CHINARE） reached the highest point of the Antarctic Ice Sheet on 18 January 2005, around the 20th anniversary ...It is now more than a decade since the twenty-first Chinese National Antarctic Research Expedition （21st CHINARE） reached the highest point of the Antarctic Ice Sheet on 18 January 2005, around the 20th anniversary of China＇s involvement in polar scientific research. This marked the ongoing evolution of the CHINARE program in the Antarctic to one with a greater research focus, and with an increased involvement in international scientific collaboration. In this and subsequent issues of Advances in Polar Science, that decade of scientific achievement will be recognized by a number of thematic papers reviewing traverse route between there and the coast. the outcomes from research at Dome A and along the展开更多
Malaysia’s interest in the Antarctic started with diplomacy when Malaysia raised the issue of Antarctica as a global common for mankind in the Question of Antarctica in the United Nations in 1982.It was only in 1999 ...Malaysia’s interest in the Antarctic started with diplomacy when Malaysia raised the issue of Antarctica as a global common for mankind in the Question of Antarctica in the United Nations in 1982.It was only in 1999 that Malaysia was able to undertake its first scientific expedition to Antarctica courtesy of New Zealand.The Malaysian International Seminar on Antarctica(MISA)is a biennial meeting that was initiated to facilitate cooperation between Malaysian scientists and their international counterparts and also to showcase the research undertaken by them.展开更多
Advances in Polar Science （APS） has been published since 1990 as a peer-reviewed English-language journal dedicated to the presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and rese...Advances in Polar Science （APS） has been published since 1990 as a peer-reviewed English-language journal dedicated to the presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research （until 2011 it was known as the Chinese Journal of Polar Science [English Edition]）. Now, commencing with Vol. 26, No. 3 in 2015, we are moving to make APS more truly international, with two new Co-Editors-in Chief, and a new expert team of disciplinary Editors from China and many other nations involved in polar research （see http：//journal.polar.org.cn/EN/column/column80.shtml）. In the future, Advances in Polar Science will be a completely separate journal from the Chinese-language version of the Chinese Journal of Polar Research.展开更多
Since it is the largest glacier system in Antarctica, the Lambert Glacier basin plays an important role in the mass balance of the overall Antarctic ice sheet. The observed data and shallow core studies from the inlan...Since it is the largest glacier system in Antarctica, the Lambert Glacier basin plays an important role in the mass balance of the overall Antarctic ice sheet. The observed data and shallow core studies from the inland traverse investigations in recent years show that there are noticeable differences in the distribution and variability of the snow accumulation rate between east and west sides. On the east side, the accumulation is higher on the average and has increased in the past decades, while on the west side it is contrary. The ice movement measurement and the ice flux calculation indicate that the ice velocity and the flux are larger in east than in west, meaning that the major part of mass supply for the glacier is from the east side. The mass budget estimate with the latest data gives that the integrated accumulation over the upstream area of the investigation traverse route is larger than the outflow ice flux by 13%, suggesting that the glacier basin is in a positive mass balance state and the ice thickness will increase if the present climate is keeping.展开更多
The accuracy of daily mean 2 meter air temperatures from five reanalyses are assessed against in-situ observations from Automatic Weather Stations in East Antarctica for 2005 to 2008. The five reanalyses all explain m...The accuracy of daily mean 2 meter air temperatures from five reanalyses are assessed against in-situ observations from Automatic Weather Stations in East Antarctica for 2005 to 2008. The five reanalyses all explain more than 70% of the average variance, and have annual root mean square errors （RMSE） between 3.4 and 6.9℃. The NOAA reanalyses, NCEP-1, NCEP-2 and 20CRv2, have cool biases of 2.5, 1.4 and 1.5℃, respectively. The ERA Interim and JCDAS reanalyses have warm biases of 1.7 and 2.0℃. All reanalyses generally perform better in the austral spring and worse in winter and autumn. They also show the best performance at an inland plateau site at 2800 m elevation, but are worst at Dome A, the summit of the East Antarctic ice sheet. In general, ERA Interim is superior to the other reanalyses, probably because of its 4D assimilation scheme. The three NOAA reanalyses perform worst; Their assimilation scheme is more constrained by limited observations and 20CRy2 has less input data, assimilating only surface pressure observations. Despite deficiencies and limitations, the reanalyses are still powerful tools for climate studies in the Antarctic region. However, more in-situ observations are required, especially from the vast interior of Antarctica.展开更多
文摘China and Australia have been collaborating in Antarctic activities since the early 1980s and that collaboration has grown and become more formalized as China＇s Antarctic program has expanded. This collaboration has involved personnel exchange, logistic support, environmental protection and particularly scientific research. China and Australia have signed a series of memorandums and treaties of friendship and cooperation on Antarctic activities in the past few years. Relevant mechanisms of cooperation between expedition plans and programs have been established, and the exchange and cooperation in people, science and technology, services, and supplies are undertaken across a range of organizations. Here we overview the history of the bilateral collaboration and provide a few examples of the many areas of cooperation. These examples are focused on activities in Hobart, the key centre of the Australian Antarctic program.
基金supported by the Chinese Polar Environment Comprehensive Investigation and Assessment Program(Grant no.CHINARE 2015-2016)supported by the Australian Government's Cooperative Research Centres Program through the Antarctic Climate and Ecosystems Cooperative Research Centre
文摘The 1228 km over-snow traverse route between the Chinese Zhongshan Station, on the coast of Prydz Bay, and Dome-A, at 4091 m elevation the highest point of the East Antarctic ice sheet, has been the focus of CHINARE surface meteorological and climate studies since 2002. A network of seven Automatic Weather Stations has been deployed along this section, including at Dome-A itself, and some of these have now provided nearly-hourly data for over a decade. Atmospheric boundary layer turbulence and radiation observations have been made over the near-coastal ice sheet inland of Zhongshan and surface turbulence measurements using an ultrasonic anemometer system have also been made in the deep interior of the ice sheet. Summer GPS radiosonde soundings of the atmospheric boundary layer have been made at Kunlun Station, near Dome-A. In this paper these observations are combined to provide a comprehensive overview of the meteorological regime of this region of the ice sheet, its climate variability, and as a reference for future study of climate change. This includes investigation of the variation of surface climate features with elevation and distance from the coast, the height and structure of the boundary layer over the ice sheet, and seasonal and regional changes in ice/snow-air interactions, including turbulent and radiative energy fluxes. The air temperature and snow temperature between the coastal Zhongshan and Dome-A on the inland plateau have not changed significantly in the past decade compared with the inter-annual variability.
文摘Analysis of sensible heat flux （ Qh ）, latent heat flux （ Qe ）, Richardson number （Ri） ,bulk transport coefficient （Cd） and katabatic windsare presented by using the meteorological data in the near surface layer from an automatic weather station （AWS） in Princess Elizabeth Land, East Antarctica ice sheet and the data of corresponding period at Zhongshan station in 2002. It shows that annual mean air temperature at LGB69 is -25.6℃, which is 16.4℃ lower than that at Zhongshan, where the elevation is lower and located on the coast. The temperature lapse rate is about 1.0℃/110 m for the initial from coast to inland. The turbulence heat flux at LGB69 displays obvious seasonal variations with the average sensible heat flux -17.9 W/m^2 and latent heat flux -0.9 W/m^2. The intensity （Qh ＋ Qe ） of coolling source is - 18.8 W/m^2 meaning the snow surface layer obtains heat from atmosphere. The near surface atmosphere is near-neutral stratified with bulk transport coefficients （Cd） around 2.8 ×10^-3 ,and it is near constant when the wind speed higher than 8 m/s. The speed and the frequency of easterly Katabatic winds at LGB69 were higher than that at Zhongshan Station.
文摘The highest part of the East Antarctic Ice Sheet, more than 4000 m above sea level, has been an area that has seen a considerable scientific research effort undertaken by the Chinese National Antarctic Research Expedition, and its international collaborators, since January 2005. That includes the establishment of the most remote Of the Chinese Antarctic stations, Kunlun, at Dome A in 2009. However, the exploration and mapping of this region had been commenced many decades earlier, most notably by inland traverses of the Union of Soviet Socialist Republics during the 1957-1958 International Geophysical Year 0GY） and later; and the extensive surveys of Antarctic surface and sub-ice topography by airborne radio-echo sounding made by the US National Science Foundation-Scott Polar Research Institute-Technical University of Denmark （NSF-SPRI-TUD） in the late-1960s and the 1970s. Here we provide a history of the activities and achievements of these earlier programs. Recent topographic maps of the ice sheet surface in the Dome A region, produced using Chinese GPS data and satellite altimetry, have shown the maps compiled from the earlier data were remarkably accurate.
文摘This issue of Advances in Polar Science exclusively contains papers that are about polar research programs and activities of countries in the Asian region. Although several Asian nations (Japan, India, China, Republic of Korea) have been involved in Antarctic research for more than 30 years, there is a new and growing interest in the Asian region in scientific activity in both the Arctic and Antarctic.
文摘It is now more than a decade since the twenty-first Chinese National Antarctic Research Expedition （21st CHINARE） reached the highest point of the Antarctic Ice Sheet on 18 January 2005, around the 20th anniversary of China＇s involvement in polar scientific research. This marked the ongoing evolution of the CHINARE program in the Antarctic to one with a greater research focus, and with an increased involvement in international scientific collaboration. In this and subsequent issues of Advances in Polar Science, that decade of scientific achievement will be recognized by a number of thematic papers reviewing traverse route between there and the coast. the outcomes from research at Dome A and along the
文摘Malaysia’s interest in the Antarctic started with diplomacy when Malaysia raised the issue of Antarctica as a global common for mankind in the Question of Antarctica in the United Nations in 1982.It was only in 1999 that Malaysia was able to undertake its first scientific expedition to Antarctica courtesy of New Zealand.The Malaysian International Seminar on Antarctica(MISA)is a biennial meeting that was initiated to facilitate cooperation between Malaysian scientists and their international counterparts and also to showcase the research undertaken by them.
文摘Advances in Polar Science （APS） has been published since 1990 as a peer-reviewed English-language journal dedicated to the presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research （until 2011 it was known as the Chinese Journal of Polar Science [English Edition]）. Now, commencing with Vol. 26, No. 3 in 2015, we are moving to make APS more truly international, with two new Co-Editors-in Chief, and a new expert team of disciplinary Editors from China and many other nations involved in polar research （see http：//journal.polar.org.cn/EN/column/column80.shtml）. In the future, Advances in Polar Science will be a completely separate journal from the Chinese-language version of the Chinese Journal of Polar Research.
基金This work was supported by the Chinese Academy of Sciences (Grant No. KZCX2-303),the Ministry of Science and Technology of China (Grant No. 2001DIA50040) +1 种基金 the National Natural Science Foundation of China (Grant Nos. 49971021 and 40071025) We tha
文摘Since it is the largest glacier system in Antarctica, the Lambert Glacier basin plays an important role in the mass balance of the overall Antarctic ice sheet. The observed data and shallow core studies from the inland traverse investigations in recent years show that there are noticeable differences in the distribution and variability of the snow accumulation rate between east and west sides. On the east side, the accumulation is higher on the average and has increased in the past decades, while on the west side it is contrary. The ice movement measurement and the ice flux calculation indicate that the ice velocity and the flux are larger in east than in west, meaning that the major part of mass supply for the glacier is from the east side. The mass budget estimate with the latest data gives that the integrated accumulation over the upstream area of the investigation traverse route is larger than the outflow ice flux by 13%, suggesting that the glacier basin is in a positive mass balance state and the ice thickness will increase if the present climate is keeping.
基金funded by the Major State Basic Research Development Program of China (Grant No. 2013CBA01804)the National Natural Science Foundation of China (Grant Nos. 41121001, 40801027)the State Key Laboratory of Cryospheric Sciences (Grant No. SKLCS-ZZ- 2012-01-07)
文摘The accuracy of daily mean 2 meter air temperatures from five reanalyses are assessed against in-situ observations from Automatic Weather Stations in East Antarctica for 2005 to 2008. The five reanalyses all explain more than 70% of the average variance, and have annual root mean square errors （RMSE） between 3.4 and 6.9℃. The NOAA reanalyses, NCEP-1, NCEP-2 and 20CRv2, have cool biases of 2.5, 1.4 and 1.5℃, respectively. The ERA Interim and JCDAS reanalyses have warm biases of 1.7 and 2.0℃. All reanalyses generally perform better in the austral spring and worse in winter and autumn. They also show the best performance at an inland plateau site at 2800 m elevation, but are worst at Dome A, the summit of the East Antarctic ice sheet. In general, ERA Interim is superior to the other reanalyses, probably because of its 4D assimilation scheme. The three NOAA reanalyses perform worst; Their assimilation scheme is more constrained by limited observations and 20CRy2 has less input data, assimilating only surface pressure observations. Despite deficiencies and limitations, the reanalyses are still powerful tools for climate studies in the Antarctic region. However, more in-situ observations are required, especially from the vast interior of Antarctica.
