Intercomparison of tropospheric OH measurements by different laser techniques during the POPCORN campaign 1994

被引:37
作者
Hofzumahaus, A [1 ]
Aschmutat, U [1 ]
Brandenburger, U [1 ]
Brauers, T [1 ]
Dorn, HP [1 ]
Hausmann, M [1 ]
Hessling, M [1 ]
Holland, F [1 ]
Plass-Dülmer, C [1 ]
Ehhalt, DH [1 ]
机构
[1] Forschungszentrum Julich, Inst Atmosphar Chem, Julich, Germany
关键词
OH intercomparison; laser absorption spectroscopy; DOAS; laser induced fluorescence; LIF; troposphere;
D O I
10.1023/A:1006014707617
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In-situ OH measurements by laser-induced fluorescence (LIF) spectroscopy and folded long-path differential optical absorption spectroscopy (DOAS) were carried out in a rural environment in North-East Germany as part of the field experiment POPCORN in August 1994. The large set of OH data obtained allowed an intercomparison of both techniques based on relative diurnal profiles and simultaneously measured absolute concentrations. Most of the time the two OH instruments encountered the same air and agreed well in the measured relative diurnal variations. Only on a few occasions the measurements significantly disagreed due to a perturbation of the DBAS measurements by a local OH source in the north-western wind sector. Excluding data from this wind direction, the statistical analysis of 137 data pairs yields a correlation coefficient of r = 0.90 and a weighted linear fit with a slope of 1.09 +/- 0.12. The correlations are carefully analyzed. The comparison of both instruments is discussed in the light of newly published effective absorption cross-sections for H(2)O and O(2) that affect the calibration of LIF.
引用
收藏
页码:227 / 246
页数:20
相关论文
共 33 条
  • [1] ASCHMUTAT U, 1994, PHYSICOCHEMICAL BEHA, V2, P811
  • [2] BECK SM, 1996, J GEOPHYS RES, V92, P1977
  • [3] In-situ measurements of tropospheric hydroxyl radicals by folded long-path laser absorption during the field campaign POPCORN
    Brandenburger, U
    Brauers, T
    Dorn, HP
    Hausmann, M
    Ehhalt, DH
    [J]. JOURNAL OF ATMOSPHERIC CHEMISTRY, 1998, 31 (1-2) : 181 - 204
  • [4] Meteorological aspects, ozone, and solar radiation measurements during POPCORN 1994
    Brauers, T
    Dorn, HP
    Koch, H
    Kraus, AB
    Plass-Dülmer, C
    [J]. JOURNAL OF ATMOSPHERIC CHEMISTRY, 1998, 31 (1-2) : 33 - 52
  • [5] Intercomparison of tropospheric OH radical measurements by multiple folded long-path laser absorption and laser induced fluorescence
    Brauers, T
    Aschmutat, U
    Brandenburger, U
    Dorn, HP
    Hausmann, M
    Hessling, M
    Hofzumahaus, A
    Holland, F
    PlassDulmer, C
    Ehhalt, DH
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (18) : 2545 - 2548
  • [6] CAMPBELL MJ, 1995, J ATMOS SCI, V52, P3421, DOI 10.1175/1520-0469(1995)052<3421:IOLHMB>2.0.CO
  • [7] 2
  • [8] Absorption cross sections for water vapor from 183 to 193 nm
    Cantrell, CA
    Zimmer, A
    Tyndall, GS
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1997, 24 (17) : 2195 - 2198
  • [9] Implementation and initial deployment of a field instrument for measurement of OH and HO2 in the troposphere by laser-induced fluorescence
    Creasey, DJ
    HalfordMaw, PA
    Heard, DE
    Pilling, MJ
    Whitaker, BJ
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (16): : 2907 - 2913
  • [10] THE CHANGING PHOTOCHEMISTRY OF THE TROPOSPHERE
    CRUTZEN, PJ
    ZIMMERMANN, PH
    [J]. TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY, 1991, 43 (04) : 136 - 151