Qin Dahe's research while affiliated with Chinese Academy of Sciences and other places

Publications (68)

Article
Full-text available
In many mountainous areas of the world, glaciers serve as a source of fresh water that is of critical importance and contributes to the sustainability of agriculture and other socio-economic activities. An enhanced understanding of socio-economic consequences of the climate-related glacier changes is essential to the identification of vulnerable en...
Article
Full-text available
Accurate, high-resolution precipitation data is important for hydrological applications and water resource management, particularly within mountainous areas about which data is presently scarce. The goal of the this study was to assess the accuracy of TRMM 3B43 precipitation data from the southwest monsoon region of China between 1998 and 2011 base...
Article
Full-text available
To better understand the risk of disasters due to glacial lake outburst floods (GLOFs), we synthetically analyze the spatial distribution and evolution of moraine-dammed lakes and potentially dangerous glacial lakes (PDGLs) in the Chinese Himalaya. Our county-based assessment of GLOF disaster risk combines PDGL outburst hazard, regional exposure, v...
Article
Based on the results of questionnaires issued to 202 local residents in the Mount Yulong Snow region, southeastern Tibetan Plateau, this study analyzes mountain residents’ perspectives on climate change and its impacts, their strategies to adapt to climate change impacts, including their willingness or otherwise to become ecological migrants, and s...
Article
Full-text available
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 degrees C. The NOAA reanalys...
Article
Full-text available
Diurnal minor and trace elements in glacial outflow water draining the Qiyi Glacier and associated hydrological controls as well as the filtration effects on water chemistry were examined. Results show that major ions, Li, Sr, and Ba are exported predominately as mobile monovalent or divalent ions and are controlled by hydrological variations over...
Article
Full-text available
Therelationshipofspeciesdiversitywithbiomassandenvironmentalfactorsisahottopicinecologi calandenvironmentalsciences.Cryosphericscienceincludesimportantresearch concerningtheecological effectsofpermafrostdegeneration.Thisstudyprovidedananalysisofchangesinspeciesdiversity,community coverageandbiomassinrelationtoelevationgradient,soilphysicochemicalp...
Article
Full-text available
This meeting was agreed in advance as part of the IPCC workplan, but this does not imply working group or panel endorsement or approval of the proceedings or any recommendations or conclusions contained herein. Supporting material prepared for consideration by the Intergovernmental Panel on Climate Change. This material has not been subjected to fo...
Article
Natural runoff observation fields with different vegetation coverage were established in the Zuomaoxikongqu River basin in the headwater area of the Yangtze River, and in the Natong River basin and the Kuarewaerma River basin in the headwater area of the Yellow River, China. The experiments were conducted using natural precipitation and artificiall...
Article
Full-text available
Mount Everest, the highest point on the Earth is often referred to as the earth's third pole as such the place is relatively inaccessible and little is known about its meteorology. In April 2005, an automatic weather station was installed at the mountain's North Col (6523 m a. s. 1.). According to the observational 10-minute mean and daily records,...
Article
Full-text available
A study is presented of the geographical distribution and spatial and temporal variabilities of the western China snow cover in the past 47 yr between 1951 and 1997. The data used consist of Scanning Multichannel Microwave Radiometer (SMMR) 6-day snow-depth charts, NOAA weekly snow extent charts, and the daily snow depth and number of snow cover da...
Article
Full-text available
From its original formulation in 1990 the International Trans-Antarctic Scientific Expedition (ITASE) has had as its primary aim the collection and interpretation of a continent-wide array of environmental parameters assembled through the coordinated efforts of scientists from several nations. ITASE offers the ground-based opportunities of traditio...
Article
Full-text available
An updated compilation of published and new data of major-ion (Ca, Cl, K, Mg, Na, NO3, SO4) and methylsulfonate (MS) concentrations in snow from 520 Antarctic sites is provided by the national ITASE (International Trans-Antarctic Scientific Expedition) programmes of Australia, Brazil, China, Germany, Italy, Japan, Korea, New Zealand, Norway, the Un...
Article
During the 1992–1993 joint Australian-Chinese over-snow traverse of the western Lambert Glacier Basin (LGB), two firn cores were drilled respectively at MGA and LGB16. During the 1996–1997 and 1997–1998 austral summers, two firn cores were drilled respectively at DT001 and DT085 on the eastern LGB. Based on the measurements made during the expediti...
Article
Full-text available
The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a 1 year record of hourly snow-height measurements that shows its seasonal variability. The measurements were made with an ultrasonic sensor mounted on an automatic weather station (AWS) insta...
Article
During an inland traverse expedition along the route from Zhongshan station on the coast to Dome A (about 4200 m a.s.l.; 1400 km from Zhongshan) in East Antarctica in 1998/99, three snow pits with a depth of 2.1-3.3 m were sampled continuously. Snow pits were located at sites 800-1100 km from the coast, with altitudes varying from 2850 to 3760 m. T...
Article
Full-text available
Surface mass-balance studies and climatic records from firn cores show remarkable differences between the east and west sides of the Lambert Glacier basin (LGB). The spatial distribution of the surface accumulation is influenced by the atmospheric moisture flux, and by the surface wind field, which is largely determined by topography. Atmospheric w...
Article
Full-text available
The annually cross-dated stable carbon isotope of tree-ring α-cellulose ofAbies spectabibis collected from the southeastern Tibetan Plateau is used to examine its relationship with climatic parameters. The residual Δ13C series in treerings is constructed after removing the effects of age trend and rising CO2. We found a close relationship between Δ...
Article
An 80.4m ice core was recovered from a site at 6500m above sea level on the East Rongbuk Glacier, Mt. Qomolangma (Everest) in August 1998. A total of 1816 samples were analyzed for major ions (Ca2+, Mg2+, Na+, K+, NH4+, SO42−, NO3−, and Cl−) and stable oxygen isotope ratios (δ18O). The core was dated by the seasonal variations along the stable isot...
Article
Full-text available
Stable-water-isotope data (δD and δ18O) from three groups of samples (fresh-snow and snow-pit samples collected on Qomolangma (Mount Everest) and Xixa- bangma during field seasons 1997, 1998 and 2001, and precipitation samples collected at Tingri station during summer 2000) are presented and used to survey the isotopic composition of precipitation...
Article
By comparing the oxygen isotopic temperatures recorded by many shallow ice cores from the coastal regions of Antarctica, this paper presents the special characteristics of the temperature variations over the Antarctic coastal regions in the past 50 years, 150 years and 250 years. In the past 50 years, the isotopic temperatures recorded in the ice c...
Article
Full-text available
For ten firn cores, from both the eastern and the western side of Lambert Glacier basin (LGB), snow accumulation rate and isotopic temperature were measured far the recent 50 years. Results show that snow accumulation for five cores over the eastern side of LGB (GC30, GD03, GD15, DT001, and DT085) at Wilks Land and Princess Elizabeth Land increases...
Article
Chemical records were recovered from samples collected from snow pits over two transects (S–N and SE–NW) across the Qinghai–Xizang (Tibetan) Plateau. The records show that the flux of major ions in the regions to the north of Mt Tanggula is, on the average, 6–30 times higher than that of the regions to the south, and 0.6–5 times higher than regions...
Article
Full-text available
The physical and chemical analysis of ice cores recovered from glaciers in the Himalaya provide some of the best records of past climate change in the region (e.g. Qin and others, 2000; Thompson and others, 2000; Kang and others, 2001, 2002). In order to better understand the climatic and environmental records preserved in snow and ice, studies hav...
Article
A 40.9 m ice core was recovered from Far East Rongbuk Glacier (FER), Qomolangma (Mount Everest), Himalaya, and an 80.4 m core from neighboring East Rongbuk Glacier (ER). Both are dated by seasonal variations of 18O and major-ionic profiles, together with references of -activity peaks. In this paper we compare the chemical records of these two cor...
Article
Ice cores recovered for paleoclimatic and/or paleoenvironmental reconstructions in the Tien Shan and Qinghai-Tibetan Plateau often encounter cracks. Although we expect that cracks opened to surface meltwater will inevitably change icecore records, we do not know how and to what extent records are influenced. An ice core retrieved from glacier No. 1...
Article
A 43 year oxalate record has been recovered in a 14.08 m ice core from Ürümqi glacier No.1 (43°06' N, 86°49' E), a mid-latitude glacier at Ürümqi river head, Tien Shan, western China. Averaging 3.6± 9.2ng g-1 (x ±1σ, N = 534), the oxalate has a background level<2 ng g-1 with sporadic concentration enhancements. Most of the spikes reach beyond10ng g...
Article
Full-text available
High-resolution chemical records from an 80.4 m ice core from the central Himalaya demonstrate climatic and environmental changes since 1844. The chronological net accumulation series shows a sharp decrease from the mid-1950s, which is coincident with the widely observed glacier retreat. A negative correlation is found between the ice-core δ18O rec...
Article
A 15.2 m deep firn core and a 2.7m snow pit were drilled in the western side of Lambert Glacier basin, East Antarctica, in January 1993.The sampling site LGB16 (72.8° S, 57.3° E) is located about 650 km from the coast, at approximately 2690 m a.s.l. The concentration of methanesulfonate (MSA) was determined in the firn core and snow pit.The continu...
Article
The continental regions of China are extensively covered by snow during winter. In this paper, the seasonal snow cover in the Tien Shan and Altay mountains is observed and analyzed, based on the characteristics of the dry-cold snow cover accumulating under the continental climatic conditions in northwest China. Compared with the humid-warm snow cov...
Article
Full-text available
Evidence of the Kuwaiti oil fires in the Dasuopu glacier ice core, central Himalaya - Volume 47 Issue 158 - Kang Shichang, Qin Dahe, Paul A. Mayewski, Xie Shucheng, Duan Keqin
Article
Full-text available
During summer 1997, a 15 m firn core was recovered from Dasuopu glacier (28°23′ N, 85°44′ E; 7000 m a.s.l.) on the northwest margin of Xixabangma Feng in the central Himalaya. Oxygen isotope values and concentrations of Ca2+, Mg2+, NH4+, SO42− and NO3− were measured over the 10 years of snow accumulation captured in the firn core. The seasonal vari...
Article
The Chinese National Antarctic Research Expedition (CHINARE) carried out three traverses from Zhongshan station to Dome A, Princess Elizabeth Land and Inaccessible Area, East Antarctic ice sheet, during the 1996/97 to 1998/99 Antarctic field seasons. The expeditions are part of the Chinese International Trans-Antarctic Scientific Expedition program...
Article
Full-text available
Comparison of the terminus locations of Rongbuk Glacier, Mount Everest, measured in 1966 and 1997 shows that in the past 30 years the glacier has retreated 170-270 m, equivalent to a retreat speed of 5.5-8.7 m a−1. During summer 1997, a 15 m firn core was recovered from Dasuopu glacier (28°23′N, 85°44′E; 7000 m a.s.l.) on the northwest margin of Xi...
Article
Full-text available
Glaciochemical analysis of surface snow samples, collected along a profile crossing the Antarctic ice sheet from the Larsen Ice Shelf, Antarctic Peninsula, via the Antarctic Plateau through South Pole, Vostok and Komsomolskaya to Mirny station (at the east margin of East Antarctica), shows that the Weddell Sea region is an important channel for air...
Article
Full-text available
A 36Cl peak has been found at about 37 ka BP in the Guliya ice core, drilled from the Qinghai-Tibetan Plateau. This peak is indicative of enhanced cosmogenic isotope production in the atmosphere, rather than a change in accumulation rate. Comparison with the records of 10Be and 36Cl in ice cores from Antarctica and Greenland indicates that peaks of...
Article
A 2.7 m snow pit was sampled in the Lambert Glacier basin, about 650 km from the coast. Concentrations of methanesulfonic acid (MSA) and non-sea-salt SO42− (nssSO42−) show distinct variation with depth in the snow pit. The seasonal variation of MSA is used to date the snow-pit samples. MSA concentration is in the range 1.9-22.0 μg kg−1 with a mean...
Article
The Lambert Glacier basin is a region of the East Antarctic ice sheet with a distinctive topography. Accumulation data derived from cane measurements are available from recent inland traverses in the western part of the basin, together with data on stable isotopes and visible stratigraphy of shallow cores and snow pits. These data suggest that snow...
Article
Through comparison of snow-pit NO3− profiles from central East Antarctica and the northern Qinghai-Tibetan Plateau (QTP), we conclude that NO3− peaks in the uppermost surface snow layers in central East Antarctica are not related to an atmospheric signal and that they need to be accounted for by post-depositional effects. Such effects, however, are...
Article
This paper reports the lead concentration and flux (where accumulation rate is available) along the route of the 1990 International Trans-Antarctic Expedition. The lead concentration in Larsen Ice Shelf and Antarctic Peninsula, the western part of the route, was 7.4 ± 4.1 pg g−1. The lead concentration in East Antarctic snow (South Pole to Mirny st...
Article
Stable-oxygen-isotope ratios (δ18O) of precipitation and ice-core samples collected from the headwaters of the Urumqi river, Tien Shan, China, were used to test the relationship between δ18O and contemporaneous surface air temperature (T(a)). A strong temporal relationship is found between δ18O in precipitation and T(a), particularly for the monthl...
Article
Abrupt decrease in recent snow accumulation at Mount Qomolangma (Everest), Himalaya - Volume 45 Issue 151 - Hou Shugui, Qin Dahe, Cameron P. Wake, Paul A. Mayewski
Article
Abrupt decrease in recent snow accumulation at Mount Qomolangma (Everest), Himalaya - Volume 45 Issue 151 - Hou Shugui, Qin Dahe, Cameron P. Wake, Paul A. Mayewski
Article
Stable-oxygen-isotope ratios (δ18O) of precipitation and ice-core samples collected from the headwaters of the Urümqi river, Tien Shan, China, were used to test the relationship between δ18O and contemporaneous surface air temperature (Ta). A strong temporal relationship is found between δ18O in precipitation and Ta, particularly for the monthly av...
Article
Results show that the summer precipitation is acidic, while the surface water is alkaline. It was also found that the ground-ice displays a weak acidic medium, which is much different from the surface water.
Article
The ice cap on Nelson Island in the South Shetland Islands, West Antarctica, was studied between 1985 and 1989. The ice cap has an average thickness of 120 m. it is temperate, exists under the sub-Antarctic maritime climate and almost completely covers the island. Owing to intense percolation of meltwater (and, to some extent, liquid precipitation)...
Article
The ice cap on Nelson Island in the South Shetland Islands, West Antarctica, was studied between 1985 and 1989. The ice cap has an average thickness of 120 m. it is temperate, exists under the sub-Antarctic maritime climate and almost completely covers the island. Owing to intense percolation of meltwater (and, to some extent, liquid precipitation)...
Article
Full-text available
This paper presents the distribution of average OD and 6 1 80 for the top I m of surface snow for a large area of Antarctica. The samples were collected on the 1990 International Trans-Antarctica Expedition which crossed the continent from the northern tip of the Antarctic Peninsula to Mirny Station. The empirical relationships between the isotopes...
Article
This paper presents the distribution of average δD andδ 18O values for the top 1 m of surface snow for a large area of Antarctica. The samples were collected on the 1990 International Trans-Antarctica Expedition which crossed the continent from the northern tip of the Antarctic Peninsula to Mirny Station. The empirical relationships between the iso...
Article
The nitrate concentration and the flux in the surface snow of Antarctica along the route of the International Trans-Antarctica Expedition, 5736 km, are presented. The local coastal ocean and the remote southern lower-midlatitude ocean provide a partial origin for the nitrate transported by atmospheric circulations and deposited in the Antarctic sno...