乌鲁木齐市城区和郊区近地层比湿分布和廓线特征

doi:10.12118/j.issn.1000-6060.2020.04.13

Abstract

Abstract: Observations from L-Band radar and 10-layer data collected at five 100-m-high meteorological towers in Urumqi City,Xinjiang,northwestern China were used to analyze the characteristics of the specific-humidity profile within 2 km,including seasonal and diurnal variation in urban and suburban Urumqi. The results,which reveal moisture inversion,were as follows：（1） The levels of specific humidity vary by season （summer>autumn>spring>winter）. In summer,specific humidity is about 4-5 times that of winter,and that of autumn is ~1 g ·kg^-1 more than in spring. In spring,summer,and autumn,the specific humidity was less at greater heights,especially in summer,whereas the change with height was less in winter. Multiple minimum values appeared on the specific humidity profile,and the appearance height is basically the same. The daily variation of specific humidity was the most in summer and winter but opposite in phase during these seasons. The specific humidity is high （low） at night,low （high） during the day in summer （winter）. Specific humidity is less in the suburbs than in urban areas in winter,but it is the urban-suburban difference is less obvious in the other seasons. （2） Moisture inversion is evident within 2 km. Its probability is>35%. January shows the maximum probability,and July,the minimum. In January,the maximum height of moisture inversion is>1 500 m,but in July it can reach 1 900 m,with a maximum thickness of<1 550 m. The maximum moisture inversion was 2.5 g·kg^-1 per 100 m in July and October,and the minimum was in January. （3） Moisture inversion often was accompanied by temperature inversion in January in Urumqi. The vertical distribution of water vapor changed according to the temperature-inversion layers. The moisture inversion,which is also related to water-vapor transport,usually appeared from the top of the temperature-inversion layer. This study can effectively reveal seasonal characteristics of air humidity and provide a basis for studying meteorological factors affecting air pollution in cities.

Key words: boundary layer, specific humidity, profile, Urumqi City

LI Zhen-jie, JIN Li-li, HE Qing, MIAO Qi-long, ALI Mamtimin. Characteristics of specific humidity distribution and profiles in Urumqi City and suburbs[J].Arid Land Geography, 2020, 43(4): 977-996.

References

[1] 刘国纬. 水文循环的大气过程[M]. 北京:科学出版社,1977.
[LIU Guowei.Atmospheric process of hydrological cycle[M]. Beijing:Science Press,1977.]
[2] 王宝鉴,黄玉霞,陶健红,等. 西北地区大气水汽的区域分布特征及其变化[J]. 冰川冻土,2006,28(1):15–21.
[WANG Baojian,HUANG Yuxia,TAO Jianhong,et al.Regional features and variations of water vapor in northwest China[J]. Journal of Glaclology and Geocryology,2006,28(1):15–21.]
[3] 郭艳君,丁一汇. 1958—2005年中国高空大气比湿变化[J]. 大气科学,2014,38(1):1–12.
[GUO Yanjun,DING Yihui.Upper-air specific humidity change over China during 1958–2005[J]. Chinese Journal of Atmospheric Sciences,2014,38(1):1–12.]
[4] SOLOMON S,QIN D,MANNING M,et al.Climate change 2007 the physical science basis[M]. New York:Cambridge University Press,2007.
[5] DAI A G,WANG J H,THOME P W,et al.A new approach to homogenize daily radiosonde humidity data[J]. J. Climate,2011,24:965–991.
[6] MCCARTHY M P,THOME P W,TITCHMER H A.An analysis of tropospheric humidity trends from radiosondes[J]. J. Climate,2009,22(22):5820–5838.
[7] PALTRIDGE G,ARKING A,POOK M.Trends in middle-and upper-level tropospheric humidity from NCEP reanalysis data[J]. Theor Appl Climatol,2009,98:351–359.
[8] ZHAO T B,DAI A G,WANG J H.Trends in tropospheric humidity from 1970 to 2008 over China from a homogenized radiosonde dataset[J]. J. Climate,2012,25(13):4549–4567.
[9] 许宝荣,邹松兵,杜得彦,等. 1981—2010年黑河流域中下游对流层大气比湿变化[J]. 冰川冻土,2016,38(1):57–68.
[XU Baorong,ZOU Songbing,DU Deyan,et al.Variation of tropospheric specific humidity upon the middle-lower reaches of the Heihe River during 1981–2010[J]. Journal of Glaciology and Geocryology,2016,38(1):57–68.]
[10] 窦晶晶,王迎春,苗世光. 北京城区近地面比湿和风场时空分布特征[J]. 应用气象学报,2014,25(5):559–569.
[DOU Jingjing,WANG Yingchun,MIAO Shiguang.Fine spatial and temporal characteristics of humidity and wind in Beijing urban area[J]. Journal of Applied Meteorological Science,2014,25(5):559–569.]
[11] HAGE K D.Urban-rural humidity differences[J]. J Appl Meteor,1975,14:1277–1283.
[12] 姚俊强,杨青,韩雪云,等. 乌鲁木齐夏季水汽日变化及其与降水的关系[J]. 干旱区研究,2013,30(1): 67–73.
[YAO Junqiang,YANG Qing,HAN Xueyun,et al.Analysis on daily variation of water vapor and its relationship with rainfall in Urumqi in summer[J]. Arid Zone Research,2013,30(1):67–73.]
[13] 金莉莉,何清,李振杰,等. 乌鲁木齐市气象塔梯度观测资料质量控制与处理[J]. 气象,2016,42(6):732–742.
[JIN Lili,HE Qing,LI Zhenjie,et al.Quality control method and treatment for Urumqi meteorology tower gradient observation data[J]. Meteorological Monthly,2016,42(6):732–742.]
[14] 周眀煜,钱粉兰,陈陟,等. 西藏高原斜压对流边界层风、温、湿廓线特征[J]. 地球物理学报,2002,45(6):773–783.
[ZHOU Mingyu,QIAN Fenlan,CHEN Zhi,et al.The characteristics of the profiles for wind,temperature and humidity in the baroclinic convective boundary layer on Xizang Plateau[J]. Chinese Journal of Geophysics,2002,45(6):773–783.]
[15] STULL R B.An introduction to boundary layer meteorology[M]. 杨长新译. Amsterdam:Kluwer Academic Publishers,1988.
[16] 王俊勤,胡隐樵,陈家宜,等. HEIFE区边界层某些结构特征[J]. 高原气象,1994,13(3):299–306.
[WANG Junqin,HU Yinqiao,CHEN Jiayi,et al.Some characteristics of structure of planetary boundary layer over HEIFE area[J]. Plateau Meteorology,1994,13(3):299–306.]
[17] 陈陟,吴志明. TOGA-COARE IOP 期间的海气通量观测结果[J]. 地球物理学报,1997,40(6):753–762.
[CHEN Zhi,WU Zhiming.Results of air-sea flux observation during TOGA-COARE IOP[J]. Acta Geophysic Sinica,1997,40(6):753–762.]
[18] 李祥余. 塔克拉玛干沙漠腹地近地层微气象学特征研究[D]. 乌鲁木齐:新疆大学,2007.
[LI Xiangyu.Surface-layer micrometerological characteristics in hinterland of Taklimakan Desert[D]. Urumqi:Xinjiang University,2007.]
[19] 胡隐樵. 黑河实验(HEIFE)能量平衡和水汽输送研究进展[J]. 地球科学进展,1994,9(4):30–34.
[HU Yinqiao.Research advance about the energy budget and transportation of water vapour in the HEIFE area[J]. Advance in Earth Sciences,1994,9(4):30–34.]
[20] 罗布,卓嘎,杨秀海. 西藏改则地区在东亚季风前期大气层特征[J]. 高原山地气象研究,2009,29(1):1–5.
[LUO Bu,ZHUO Ga,YANG Xiuhai.The atmospheric characteristics in the early period of east Asian monsoon in Gaize,Tibet[J]. Plateau and Mountain Meteorology Research,2009,29(1):1–5.]
[21] 蒋兴文,李跃清,王鑫,等. 青藏高原东部冬季边界层的基本特征及其对下游大气的影响[C]//2009年高原山地气象研究暨西南区域气象学术交流会,2009:625–633.
[JIANG Xingwen,LI Yueqing,WANG Xin,et al.The basic characteristics of the winter boundary layer in the eastern Tibetan Plateau and its influence on the lower atmosphere[C]//2009 plateau mountain meteorological research and meteorological academic exchange conference in southwest China,2009:625–633.]
[22] 卞林根,程彦杰,王欣,等. 北京大气边界层中风和温度廓线的观测研究[J]. 应用气象学报,2002,13(特刊):13–25.
[BIAN Lingen,CHENG Yanjie,WANG Xin,et al.Observational study of wind and temperature profiles of urban boundary layer in Beijing winter[J]. Journal of Applied Meteorological Science,2002,13(Suppl.):13–25.]
[23] 阎宇平,王介民,苏中波. 黑河实验区沙漠戈壁上空“逆湿” 的数值模拟[J]. 气象科学,2001,21(1):36–43.
[YAN Yuping,WANG Jiemin,SU Zhongbo.Numerical simulation of “Inverse humidity” over desert / gobi in HEIFE area[J]. Scientia Meteorologica Sinica,2001,21(1):36–43.]
[24] 胡隐樵,王俊勤,左洪超. 临近绿洲的沙漠上空近地面层内水汽输送特征[J]. 高原气象,1993,12(2):125–132.
[HU Yinqiao,WANG Junqin,ZUO Hongchao.Character of water vapour transportation in the surface layer over desert near oasis[J]. Plateau Meteorology,1993,12(2):125–132.]
[25] 胡隐樵,奇跃进,杨选利. 河西戈壁(化音)小气候和热量平衡特征的初步分析[J]. 高原气象,1990,9(2):113–119.
[HU Yinqiao,QI Yuejin,YANG Xuanli.Preliminary analyses about characteristics of microclimate and heat energy budget in Hexi gobi(Huayin)[J]. Plateau Meteorology,1990,9(2):113–119.]
[26] 金莉莉,曹兴,李振杰. 塔中比湿变化特征[J]. 沙漠与绿洲气象,2012,6(2):53–57.
[JIN Lili,CAO Xing,LI Zhenjie.Variation characteristics of specific humidity in Tazhong[J]. Desert and Oasis Meteorology,2012,6(2):53–57.]
[27] 彭艳,张宏升,刘辉志,等. 青藏高原近地面层气象要素变化特征[J]. 北京大学学报(自然科学版),2005,41(2):180–190.
[PENG Yan,ZHANG Hongsheng,LIU Huizhi,et al.Characteristics of micro-meteorology in the surface layer over Tibetan Plateau area[J]. Acta Scientiarum Naturalium Universitatis Pekinenisis,2005,41(2):180–190.]
[28] 王介民,刘晓虎,祁永强. 应用涡旋相关法对戈壁地区湍流输送的初步研究[J]. 高原气象,1990,9(2):120–129.
[WANG Jiemin,LIU Xiaohu,QI Yongqiang.A preliminary study of turbulence transfer characteristics in gobi area with an eddy correlation technique[J]. Plateau Meteorology,1990,9(2):120–129.]
[29] 谷良雷,胡泽勇,吕世华,等. 藏北高原夏季典型天气大气边界层特征分析[J]. 冰川冻土,2006,28(6):893–899.
[GU Lianglei,HU Zeyong,LV Shihua,et al.Atmosphere boundary layers in typical days over the north Tibet Plateau during summer[J]. Journal of Glaciology and Geocryology,2006,28(6):893–899.]
[30] ZUO H C,HU Y Q,LI D L,et al.Seasonal transition and its boundary layer characteristics in Anduo area of Tibetan Plateau[J]. Progress in Natural Science,2005,15(3):239–245.
[31] 李家伦,洪钟祥,孙淑芬. 青藏高原西部改则地区大气边界层特征[J]. 大气科学,2000,24(3):301–312.
[LI Jialun,HONG Zhongxiang,SUN Shufen.An observational experiment on the atmospheric boundary layer in Gerze area of the Tibetan Plateau[J]. Chinese Journal of Atmospheric Sciences,2000,24(3):301–312.]
[32] XU X D,ZHOU M Y,CHEN J Y,et al.A comprehensive physical pattern of land-air dynamic and thermal structure on the Qinghai-Xizang Plateau[J]. Science in China (Series D:Earth-Sciences),2002,45(7):577–594.
[33] 张强,卫国安,侯平. 初夏敦煌荒漠戈壁大气边界层结构特征的一次观测研究[J]. 高原气象,2004,23(5):587–597.
[ZHANG Qiang,WEI Guoan,HOU Ping.Observation studies of atmosphere boundary layer characteristic over Dunhuang gobi in early summer[J]. Plateau Meteorology,2004,23(5):587–597.]

Characteristics of specific humidity distribution and profiles in Urumqi City and suburbs

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