Accurate measurements of CO2 mole fraction in the atmospheric surface layer by an affordable instrumentation

被引：0

作者：

Keronen, Petri ^{[1
]}

Reissell, Anni ^{[1
,7
]}

Chevallier, Frederic ^{[4
]}

Siivola, Erkki ^{[1
]}

Pohja, Toivo ^{[2
]}

Hiltunen, Veijo ^{[2
]}

Hatakka, Juha ^{[3
]}

Aalto, Tuula ^{[3
]}

Rivier, Leonard ^{[4
]}

Ciais, Philippe ^{[4
]}

Jordan, Armin ^{[5
]}

Hari, Pertti ^{[6
]}

Viisanen, Yrjo

Vesala, Timo ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland

[2] Hyytiala Forestry Field Stn, FI-35500 Korkeakoski, Finland

[3] Finnish Meteorol Inst, FI-00101 Helsinki, Finland

[4] CEA CNRS UVSQ, Lab Sci Climat & Environm, FR-91191 Gif Sur Yvette, France

[5] Max Planck Inst Biogeochem, D-07701 Jena, Germany

[6] Univ Helsinki, Dept Forest Sci, FI-00014 Helsinki, Finland

[7] Int Inst Appl Syst Anal, AT-2361 Laxenburg, Austria

来源：

BOREAL ENVIRONMENT RESEARCH | 2014年 / 19卷

基金：

芬兰科学院;

关键词：

CARBON-DIOXIDE; EDDY COVARIANCE; EXCHANGE; FLUXES; TRANSPORT; UNCERTAINTY; SATELLITE; INVERSION; MODELS; MODIS;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We aimed to assess the feasibility of an affordable instrumentation, based on a non-dispersive infrared analyser, to obtain atmospheric CO2 mole fraction data for background CO2 measurements from a flux tower site in southern Finland. The measurement period was November 2006 December 2011. We describe the instrumentation, calibration, measurements and data processing and a comparison between two analysers, inter-comparisons with a flask sampling system and with reference gas cylinders and a comparison with an independent inversion model. The obtained accuracy was better than 0.5 ppm. The intercomparisons showed discrepancies ranging from 0.3 ppm to 0.06 ppm between the measured and reference data. The comparison between the analyzers showed a 0.1 +/- 0.4 ppm difference. The trend and phase of the measured and simulated data agreed generally well and the bias of the simulation was 0.2 +/- 3.3 ppm. The study highlighted the importance of quantifying all sources of measurement uncertainty.

引用

页码：35 / 54

页数：20

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