FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

KANG Shi-chang; QIN Da-he; YAO Tan-dong; PAUL A. Mayewski; SALLIE Whitlow

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FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow

文章导航 > Chinese Geographical Science > 2000 > 10(3): 218-225

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. 中国地理科学, 2000, 10(3): 218-225.

引用本文:

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. 中国地理科学, 2000, 10(3): 218-225.

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. Chinese Geographical Science, 2000, 10(3): 218-225.

Citation:

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. Chinese Geographical Science, 2000, 10(3): 218-225.

FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

1.
Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environment and Engineering Institute, the Chinese Academy of Sciences, Lanzhou 730000, P. R. China;
2.
Climate Change Research Center, Institute,for the Study of Earth, Ocean and Space(EOS), University of New Hampshire, Durham, NH 03824, USA

基金项目: Under the auspices of NKBRSF Project (G1999043400), the Great Project of Chinese Academy of Sciences(KZ951-A1-402 and KZ951-A1-204),the National Natural Science Foundation of China (49871022),and a cooperative project between Lanzhou Institute of Glaciology and Geocryology, CAS and Climate Change Research Center, University of New Hampshire, Byed Polar Research Center, Ohio State University.We thank members of Sinn-American 1997 Dasuopu Ice Core Cooperative Expedition for assistance in the field.

详细信息

作者简介:
KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.

中图分类号: P343.6

FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

1.
Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environment and Engineering Institute, the Chinese Academy of Sciences, Lanzhou 730000, P. R. China;
2.
Climate Change Research Center, Institute,for the Study of Earth, Ocean and Space(EOS), University of New Hampshire, Durham, NH 03824, USA

摘要: During 1997 summer, fresh snow samples were collected from the high elevation region (5400-7000 m) of Dasuopu Galcier on the northern slope of Mt. Xixabangma (28°33'N, 85°44'E). Compared with other remote regions in the world, major ion concentrations in fresh snow are very low during summer in Mt. Xixabangma, suggesting that the atmosphere is very clean and may represent background value for the middle/upper troposphere in the middle/low latitude area. During summer at Mt. Xixabangma the fresh snow chemistry is minimally influenced by anthropogenic pollutants as revealed by the snow pH (mean value of 6.0). Conductivity of fresh snow are low and constant. A multi regression curve of pH vs conductivity shows a strong correlation; snow pH is negatively correlated with conductivity when pH < 6.0, and positively correlated when pH > 6.0. This suggests that the dominant chemical species of snow are interchanging between acid anions (e.g.SO₄^2-,NO₃^-) and crustal cations.
- fresh snow /
- major ion concentrations /
- pH and conductivity /
- central Himalayas
Abstract: During 1997 summer, fresh snow samples were collected from the high elevation region (5400-7000 m) of Dasuopu Galcier on the northern slope of Mt. Xixabangma (28°33'N, 85°44'E). Compared with other remote regions in the world, major ion concentrations in fresh snow are very low during summer in Mt. Xixabangma, suggesting that the atmosphere is very clean and may represent background value for the middle/upper troposphere in the middle/low latitude area. During summer at Mt. Xixabangma the fresh snow chemistry is minimally influenced by anthropogenic pollutants as revealed by the snow pH (mean value of 6.0). Conductivity of fresh snow are low and constant. A multi regression curve of pH vs conductivity shows a strong correlation; snow pH is negatively correlated with conductivity when pH < 6.0, and positively correlated when pH > 6.0. This suggests that the dominant chemical species of snow are interchanging between acid anions (e.g.SO₄^2-,NO₃^-) and crustal cations.
- fresh snow /
- major ion concentrations /
- pH and conductivity /
- central Himalayas

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FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

1. Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environment and Engineering Institute, the Chinese Academy of Sciences, Lanzhou 730000, P. R. China;

2. Climate Change Research Center, Institute,for the Study of Earth, Ocean and Space(EOS), University of New Hampshire, Durham, NH 03824, USA

作者简介:
KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.

收稿日期: 2000-03-27
刊出日期: 2000-09-20

中图分类号: P343.6

关键词:

fresh snow /

major ion concentrations /

pH and conductivity /

central Himalayas

摘要: During 1997 summer, fresh snow samples were collected from the high elevation region (5400-7000 m) of Dasuopu Galcier on the northern slope of Mt. Xixabangma (28°33'N, 85°44'E). Compared with other remote regions in the world, major ion concentrations in fresh snow are very low during summer in Mt. Xixabangma, suggesting that the atmosphere is very clean and may represent background value for the middle/upper troposphere in the middle/low latitude area. During summer at Mt. Xixabangma the fresh snow chemistry is minimally influenced by anthropogenic pollutants as revealed by the snow pH (mean value of 6.0). Conductivity of fresh snow are low and constant. A multi regression curve of pH vs conductivity shows a strong correlation; snow pH is negatively correlated with conductivity when pH < 6.0, and positively correlated when pH > 6.0. This suggests that the dominant chemical species of snow are interchanging between acid anions (e.g.SO₄^2-,NO₃^-) and crustal cations.

English Abstract

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. 中国地理科学, 2000, 10(3): 218-225.

引用本文:

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. 中国地理科学, 2000, 10(3): 218-225.

KANG Shi-chang, QIN Da-he, YAO Tan-dong, PAUL A. Mayewski, SALLIE Whitlow. FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS[J]. Chinese Geographical Science, 2000, 10(3): 218-225.

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FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

作者简介: KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.

FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

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FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

作者简介: KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.

English Abstract

FRESH SNOW CHEMISTRY FROM HIGH MOUNTAIN REGIONS IN CENTRAL HIMALAYAS

全文HTML

目录

作者简介:
KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.

作者简介:
KANG Shi-chang(1969- ),male, a native of Longxi, Gansu Prevince, Ph. D., ass istant professor. His research field is climatic and environmental change from snow/ice records.