IMPACTOF LOCAL SURFACE WINDS ON ATMOSPHERICMETHANE BACKGROUND CONCENTRATIONS AT MT.WALIGUAN

Zhou Ling xi; Wen Yupu; Li Jinlong; Tang Jie; Zhang Xiaochun

Vol.15, NO.3, 2004

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2004 > 15(3): 257-265

Zhou Ling xi, Wen Yupu, Li Jinlong, et al. Impactof local surface winds on atmosphericmethane background concentrations at Mt.Waliguan. J Appl Meteor Sci, 2004, 15(3): 257-265.

Citation:

Zhou Ling xi, Wen Yupu, Li Jinlong, et al. Impactof local surface winds on atmosphericmethane background concentrations at Mt.Waliguan. J Appl Meteor Sci, 2004, 15(3): 257-265.

Zhou Ling xi, Wen Yupu, Li Jinlong, et al. Impactof local surface winds on atmosphericmethane background concentrations at Mt.Waliguan. J Appl Meteor Sci, 2004, 15(3): 257-265.

Citation:

Zhou Ling xi, Wen Yupu, Li Jinlong, et al. Impactof local surface winds on atmosphericmethane background concentrations at Mt.Waliguan. J Appl Meteor Sci, 2004, 15(3): 257-265.

PDF( 203 KB)

IMPACTOF LOCAL SURFACE WINDS ON ATMOSPHERICMETHANE BACKGROUND CONCENTRATIONS AT MT.WALIGUAN

1.
Chinese Academy of Meteorological Sciences, Beijing 100081
2.
National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, Japan 305-8506
3.
College of Environmental Sciences, Peking University, Beijing 100871
4.
College of Physics, Peking University, Beijing 100871
5.
Qinghai Meteorological Bureau, Xining 810001

Received Date: 2003-04-21
Rev Recd Date: 2003-07-15
Publish Date: 2004-06-30

Abstract

Abstract

In combination with partitioned continuous data sets of atmospheric CH₄ and local surface winds corresponding to different seasons from July 1994 to December 1996, the impact of surface winds on the CH₄ background concentrations at Mt. Waliguan (36° 17′N, 100° 54′E, 3816 m ASL) in the western China was studied, which is one the global atmospheric baseline monitoring stations. Results indicate that the variability in the horizontal and vertical wind speed/direction over the periods of different seasons has a distinct impact on the observed CH₄ variations. Horizontal wind direction of NE—ENE—E is the major non-background section of atmospheric CH₄ observation at the site. Horizontal wind speed larger than 10m/s, or calm condition, or vertical wind speed larger than±1 m/s has maximum impact on CH₄ hourly mixing ratios. Statistical analysis also gives the averaged CH₄ distribution and its diurnal variation pattern in different seasons during this period. By using the local surface winds outcomes as one of the data filters for the atmospheric CH₄ observed concentrations at in-land plateau of China, the selection procedures of background concentrations were provided for the applications to the different purpose and requirements. The selected hourly data sets representing "baseline" conditions accounts for 50% of the raw records approximately.
- CH₄;
- Background variation;
- Surface winds;
- Data selection

FullText(HTML)

References(21)

Figures and Tables

图 1 瓦里关不同季节CH₄浓度-风玫瑰图 (浓度单位:×10 ^-9)

DownLoad: Full-Size Img PowerPoint

图 2 瓦里关不同季节各风向对CH₄浓度水平的贡献

DownLoad: Full-Size Img PowerPoint

图 3 瓦里关不同季节大气CH₄浓度平均日变化

(a) 春季, (b) 夏季, (c) 秋季, (d) 冬季

DownLoad: Full-Size Img PowerPoint

References

[1]	WMO.Strategy for the Implementation of!the Global Atmosphere Watch Programme (2001-2007), a contribution to the implementation of the WMO long-term plan.Geneva, World Meteorological Organization, 2001.1-21.
[2]	Etheridge D M, Steele L P, Francey R J, et al.Atmospheric methane between 1000 A D and present: Evidence of anthropogenic emissions and climatic variability.J of Geophysical Research, 1998, 103(D13): 15979-15993. doi: 10.1029/98JD00923
[3]	王庚辰, 温玉璞.温室气体浓度和排放监测及相关过程.北京:中国环境科学出版社, 1996.39-44.
[4]	Dlugokencky E J, Steele L P, Lang P M, et al.Atmospheric CH4 at Mauna Loa and Barrow Observatories: presentation and analysis of in situ measurements.J of Geophysical Research, 1995, 100(D11): 23103-23113. doi: 10.1029/95JD02460
[5]	Tans P P, Bakwin P S, Guenther D W.A feasible global carbon cycle observing system: a plan to decipher today's carbon cycle based on observations.Global Change Biology, 1996, 2: 309-318. doi: 10.1111/gcb.1996.2.issue-3
[6]	周凌晞.中国大陆地区主要温室气体本底特征研究: [博士论文].北京:北京大学环境科学中心, 2001.
[7]	周凌晞, 汤洁, 张晓春, 等.气相色谱法观测本底大气中的CH₄和CO₂.环境科学学报, 1998, 18(4): 356-361. http://www.cnki.com.cn/cnki/images/header/cnkikjlogo.gif
[8]	周凌晞, 汤洁, 温玉璞, 等.瓦里关山大气甲烷本底浓度变化特征分析.应用气象学报, 1998, 9(4): 385-391. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19980458&flag=1
[9]	周凌晞, 汤洁, 温玉璞, 等.地面风对瓦里关山大气CO₂本底浓度影响分析.环境科学学报, 2002, 22(2): 135-139. http://www.cnki.com.cn/Article/CJFDTOTAL-HJXX200202001.htm
[10]	Conway T J, Steele L P, Novelli P C.Correlations among atmospheric CO₂, CH4 and CO in the Arctic, March 1989.Atmospheric Environment, 1993, 27A: 2881-2894. http://www.sciencedirect.com/science/article/pii/096016869390319T
[11]	Hansen A D A, Conway T J, Steele L P, et al.Correlation among combustion effluent species at Barrow, Alaska: Aerosol black carbon, carbon dioxide, and methane.J of Atmospheric Chemistry, 1989, 9: 283-299. doi: 10.1007/BF00052838
[12]	Harris J M, Dlugokencky E J, Oltmans S J, et al.An interpretation of trace gas correlations during Barrow, Alaska, winter dark periods, 1986-1997.J of Geophysical Research, 2000, 105(D13): 17267-17278. doi: 10.1029/2000JD900167
[13]	周凌晞, 汤洁, M.Ernst, 等.中国西部本底大气中CO的连续测量.环境科学, 2001, 22(3): 1-5. http://www.cnki.com.cn/Article/CJFDTOTAL-HJKZ200103000.htm
[14]	汤洁, 温玉璞、周凌晞, 等.中国西部大气清洁地区黑碳气溶胶的观测研究.应用气象学报, 1999, 10(2): 160-170. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19990255&flag=1
[15]	Dlugokencky E J, Steele L P, Lang P M, et al.The growth rate and distribution of atmospheric methane.J of Geophysical Research, 1994, 99(D8): 17021-17043. doi: 10.1029/94JD01245
[16]	Steele L P, Fraser P J, Rasmussen R A, et al.The global distribution of methane in the troposphere.J of Atmospheric Chemistry, 1987, 5(2): 125-171. doi: 10.1007/BF00048857
[17]	WMO.World Data Center for Greenhouse Gases Data Summary.Tokyo, Japan, WDCGG, 2000, 22: 7-22.
[18]	Shipham M C, Bartlett K B, Crill P M, et al.Atmospheric CH4 measurements in central New England: An analysis of the long-term trend, seasonal and diurnal cycles.J of Geophysical Research, 1998, 103(D9): 10621-10630. doi: 10.1029/98JD00106
[19]	Dlugokencky E J, Harris J M, Chung Y S, et al.The relationship between the methane seasonal cycle and regional sources and sinks at Tae-ahn Peninsula, Korea.Atmospheric Environment, 1993, 27A (14): 2115-2120. http://www.sciencedirect.com/science/article/pii/096016869390041V
[20]	Aoki S, Nakazawa T, Murayama S, et al.Measurements of atmospheric methane at the Japanese Antarctic station, Syowa.Tellus, 1992, 44B: 273-281.
[21]	Ma J Z, Zhou X J, Tang J, et al.Estimates of the ozone budget for ozone at Waliguan Observatory.J of Atmospheric Chemistry, 2002, 41: 21-48. doi: 10.1023/A:1013892308983