atmospheric carbon dioxide
The use of stomatal frequency from three Australian evergreen tree species as a proxy indicator of atmospheric carbon dioxide concentration
... Increasing atmospheric carbon dioxide concentration ([CO2]) is the main contributing factor to anthropogenically derived global climate change. The impact of climate change up[r] ...
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Laboratory spectral calibration of the TanSat atmospheric carbon dioxide grating spectrometer
... tively. This paper describes the prelaunch spectral calibra- tion of the atmospheric carbon dioxide grating spectrometer aboard TanSat. Several critical aspects of the spectrometer, including the ...
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Development of a laser for differential absorption lidar measurement of atmospheric carbon dioxide
... In the quest for a better understanding of climate change, greater importance is attached to monitoring the levels of atmospheric carbon dioxide to gain an improved knowledge of sources and sinks. ...
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Statistical Forecasting Models of Atmospheric Carbon Dioxide and Temperature in the Middle East
... DOI: 10.4236/gep.2017.510002 13 Journal of Geoscience and Environment Protection of the time series we encounter in real world problems are non-stationary, and we must remove non-stationary component to utilize ...
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Addressing the Grand Challenge of atmospheric carbon dioxide: geologic sequestration vs. biological recycling
... Addressing atmospheric carbon dioxide truly is a Grand Challenge, however technological approaches are avail- able to address current and future emissions and it would be naïve to assume a single ...
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Development and field testing of a rapid and ultra-stable atmospheric carbon dioxide spectrometer
... veloped, using techniques such as tunable infrared laser di- rect absorption spectroscopy (TILDAS), non-dispersive in- frared absorption (NDIR) spectroscopy, integrated cavity output spectroscopy (ICOS), cavity ring-down ...
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Assessment of recent advances in measurement techniques for atmospheric carbon dioxide and methane observations
... The grey areas correspond to the WMO/GAW compatibility (dark grey) and extended compatibility (light grey) goals; vertical grey bars (left diagrams) illustrate when different inlets were[r] ...
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The Macquarie Island (LoFlo2G) high-precision continuous atmospheric carbon dioxide record
... For applications that compare LoFlo data sets within the CSIRO network, the uncertainty in 30 min mean samples with mole fractions near the reference standard ( > 99. 9 % of all obser[r] ...
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Effect of elevated atmospheric carbon dioxide on the allelopathic potential of common ragweed
... Common ragweed ( Ambrosia artemisiifolia var. elatior ), one of the most notorious invasive exotic plant species, was used to assess changes in foliar mono- and sesquiterpene production [r] ...
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Implications of Elevated Atmospheric Carbon Dioxide and Tropospheric Ozone for Water Use in Stands of Trembling Aspen and Paper Birch.
... Effects of global change on climate and ecosystems are expected to increase toward the poles, and to be greater in the northern hemisphere due to its greater land area. Increased temperature, more frequent droughts in ...
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On the Relationship between Atmospheric Carbon Dioxide and Global Temperature
... On the El Niño time scale 2.3 - 7 years, the atmospheric CO2 was in-phase with the global temperature changes except for the 1991-1999 time period, which included a very strong El Niño e[r] ...
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Preservation of terrestrial organic carbon in marine sediments offshore Taiwan: mountain building and atmospheric carbon dioxide sequestration
... modern carbon (pMC) comparative to 95 % of the 14 C activity of the NBS oxalic acid and ∆ 14 C based on established proto- cols (Stuiver and Polach, 1977), with precision typically bet- ter than 10 ...Inorganic ...
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Towards a stable and absolute atmospheric carbon dioxide instrument using spectroscopic null method
... ecosystem carbon flux estimation, this measurement bias at one site location can introduce an error estimation of ∼ 50 g C m −2 yr −1 at another site 500 km away, a number that is nearly half of the annual ...
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Statistical Modeling of Emission Factors of Fossil Fuels Contributing to Atmospheric Carbon Dioxide in Africa
... Blasing, Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge Na- tional Laboratory, for supplying us the source of the data and his helpful sugges- ...
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Laboratory analysis of the effects of elevated atmospheric carbon dioxide on respiration in biological soil crusts
... limited soil moisture availability and nutrient poor soils (typical of drylands) and is especially applicable to BSCs dominated by nitrogen fixing cyanobacteria. Therefore undisturbed BSC-covered drylands could be ...
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Deterioration Of Concrete Due To Acid Attack
... Carbonic acid attack usually occurs in the cas e of buried concrete structures visible to acidic ground water fro a long time.. Atmospheric carbon dioxide Absorbed by [r] ...
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The Greenhouse Effect: An Evaluation of Arrhenius’ Thesis and a New Energy Equilibrium Model
... of carbon dioxide and water vapour in the atmosphere would result in a warming of the ...of atmospheric carbon dioxide and water vapour in pre- venting heat flow from the Earth’ s ...
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LEVELS AND TEMPERATURE ON GROWTH CHARACTERISTICS OF GROUNDNUT (ARACHIS HYPOGAEA L.)
... Growth parameters of groundnut (30 days after the imposition of treatment) cultivated with atmospheric carbon dioxide enrichment and increased temperature.. Statistical sig[r] ...
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A comprehensive set of benchmark tests for a land surface model of simultaneous fluxes of water and carbon at both the global and seasonal scale
... and carbon at the global and re- gional spatial scale, and on a seasonal ...and carbon dioxide fluxes from ten FLUXNET sites covering the major global biomes, atmospheric carbon ...
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Continuous measurements of atmospheric oxygen and carbon dioxide on a North Sea gas platform
... The sample air is pumped through the system at a flow rate of around 40 ml/min using a diaphragm pump (KNF, N-86, of which the wetted materials are PTFE and alu- minium). A combo pressure regulator (VICI, PR50A30Z2) was ...
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