Partitioning of net carbon dioxide flux measured by automatic transparent chamber
نویسندگان
چکیده
منابع مشابه
Calculations of automatic chamber flux measurements of methane and carbon dioxide using short time series of concentrations
The closed chamber technique is widely used to measure the exchange of methane (CH4) and carbon dioxide (CO2) from terrestrial ecosystems. There is, however, large uncertainty about which model should be used to calculate the gas flux from the measured gas concentrations. Due to experimental uncertainties the simple linear regression model (first-order polynomial) is often applied, even though ...
متن کاملInteractive comment on “Calculations of automatic chamber flux measurements of methane and carbon dioxide using short time series of concentrations” by N. Pirk et al
First, the authors should specify the exact meaning of “concentration” when this word is used within the manuscript, since density, molar fraction or mixing ratio are all measurements of concentration with different physical definitions. In this sense, it is important to realize that molar fraction should correspond to the molar ratio of carbon dioxide with reference to dry rather than moist ai...
متن کاملNet ecosystem exchange of carbon dioxide in a temperate poor fen: a comparison of automated and manual chamber techniques
We used five analytical approaches to compare net ecosystem exchange (NEE) of carbon dioxide (CO2) from automated and manual static chambers in a peatland, and found the methods comparable. Once per week we sampled manually from 10 collars with a closed chamber system using a LiCor 6200 portable photosynthesis system, and simulated four photosynthetically active radiation (PAR) levels using shr...
متن کاملFinal author response to ”Calculations of automatic chamber flux measurements of methane and carbon dioxide using short time series of concentrations”
The closed chamber technique is widely used to measure the exchange of methane (CH4) and carbon dioxide (CO2) from terrestrial ecosystems. There is, however, large uncertainty about which model should be used to calculate the gas flux from the measured gas concentrations. Due to experimental uncertainties the robust ::::: simple linear regression model (first order polynomial) is often applied,...
متن کاملOcean-atmosphere partitioning of anthropogenic carbon dioxide on centennial timescales
[1] A theory for the ocean-atmosphere partitioning of anthropogenic carbon dioxide on centennial timescales is presented. The partial pressure of atmospheric CO2 (PCO2) is related to the external CO2 input (DSC) at air-sea equilibrium by: PCO2 = 280 ppm exp(DSC/[IA + IO/R]), where IA, IO, and R are the pre-industrial values of the atmospheric CO2 inventory, the oceanic dissolved inorganic carbo...
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ژورنال
عنوان ژورنال: IOP Conference Series: Earth and Environmental Science
سال: 2018
ISSN: 1755-1307,1755-1315
DOI: 10.1088/1755-1315/138/1/012003