ATMOSPHERIC CO2
Modelling the recent historical impacts of atmospheric CO2 and climate change on Mediterranean vegetation
... Model simulations for the Mediterranean region indicate that the recent rise in atmospheric CO2 may already have had signi®cant impacts on productivity, structure and water relations of [r] ...
15
Simulating the atmospheric CO2 concentration across the heterogeneous landscape of Denmark using a coupled atmosphere–biosphere mesoscale model system
... Acknowledgements. This study was carried out as part of a PhD study within the Danish ECOCLIM project funded by the Danish Strategic Research Council (grant no. 10-093901). CarbonTracker CT2015 results that were provided ...
20
The impact of spatiotemporal variability in atmospheric CO2 concentration on global terrestrial carbon fluxes
... In all simulations examined in this study, the Catchment- CN model is driven with atmospheric fields from NASA’s Modern-Era Retrospective analysis for Research and Ap- plications, version 2 (MERRA-2) reanalysis ...
18
Wind-driven changes in Southern Ocean residual circulation, ocean carbon reservoirs and atmospheric CO2
... argues that during glacial-interglacial transitions, the ven- tilation of the abyssal ocean was achieved by the formation and erosion of a low-salinity surface water layer around Antarctica. Our model experiments with ...
20
Modelling ice sheet evolution and atmospheric CO2 during the Late Pliocene
... large-scale atmospheric cir- culation and precipitation, and possibly also the effects of changed freshwater fluxed on ocean circulation, depending on the ...on atmospheric cir- culation and precipitation, ...
17
Evidence of Adaptation to Recent Changes in Atmospheric CO2 in Four Weedy Species
... Different letters indicate significant differences, based on analysis of variance. album , carboxylation efficiency of Rubisco was unaffected by the growth CO 2 , and[r] ...
11
Impacts of elevated atmospheric CO2 on nutrient content of important food crops
... otherwise normal field cultivation conditions. This data, collected across three continents, represents over ten times more data on the nutrient content of crops grown in FACE experiments than was previously available. We ...
8
Glyphosate resistance of C3 and C4 weeds under rising atmospheric CO2
... Herbicide action generally depends on a metabolic function (growth, amino acid synthesis, photosynthesis, lipid synthesis, etc.) that is essential for plant growth and development. Consequently, any anatomical, ...
11
Radiocarbon constraints on the glacial ocean circulation and its impact on atmospheric CO2
... was far from negligible. Nevertheless, it is notable that they consistently suggest a contribution of more than half of the full B90 p.p.m. glacial–interglacial amplitude, in line with previous proposals based on GCM 41 ...
10
Atmospheric CO2 Increase: A Potential for Primary Production Enhancement in Lake Kinneret
... riodical term of 1970-2001 was chosen as having detailed records of relevant da- ta. This period represents the lake conditions prior to major changes together with transition time towards the modified ecosystem and the ...
16
Impacts of recent and anticipated changes in atmospheric CO2 concentrations on growth performance of weedy rice (Oryza sativa f spontanea) biotypes in Sri Lanka
... for the human population in the tropical countries. Differential responses of the rice crop and associated weeds to rising CO may have significant implications with respect to rice production and subsequent food ...
6
Diurnal and seasonal variations of atmospheric CO2 over Trivandrum, India
... authors would like to express heartfelt thanks to Dr.G.Beig, Indian Institute of Tropical Meteorology (IITM), Pune, Ministry of Earth Sciences, Govt. of India, for providing the fund in the form of a major research ...
8
Human CO2 Emissions Have Little Effect on Atmospheric CO2
... reduced the “buffer capacity” of the carbonate system: The rise in atmospheric and oceanic carbon content goes along with an increase in the Revelle factor, a phenomenon which is already measurable. This implies ...
14
Modelling the long-term carbon cycle, atmospheric CO2, and Earth surface temperature from late Neoproterozoic to present day
... A commonly-used qualitative Earth surface temperature proxy is the paleolatitude of ice caps (Crowley, 1998; Royer et al., 2004). This record helps de fi ne the general oscillation between greenhouse (ice free) and ...
15
New constraints on atmospheric CO2 concentration for the Phanerozoic
... rate = 8%, 12%, and 67% for the boron, alkenone, and paleosol carbonate methods; see supporting information). This is improved signi fi cantly when the data for all species are pooled, suggesting that CO 2 estimates may ...
10
Insensitivity of alkenone carbon isotopes to atmospheric CO2 at low to moderate CO2 levels
... M.: Atmospheric CO 2 over the last 1000 years: A high-resolution record from the West Antarctic Ice Sheet (WAIS) Divide ice core, Global ...Changing atmospheric CO 2 concentration was the primary driver of ...
16
What was the source of the atmospheric CO2 increase during the Holocene?
... 20 ppm increase. Although the TRAF and TRAFc simula- tions do not account for land use changes during this pe- riod, assuming that land use was a source of carbon to the atmosphere requires about 100 PgC to compensate ...
13
Ocean fertilisation : science and regulation
... Seventeen years after the ratification of the United Nations Framework Convention on Climate Change UNFCCC, stabilisation of atmospheric CO2 still remains a central goal of climate chang[r] ...
313
Grassland futures in Great Britain – productivity assessment and scenarios for land use change opportunities
... rising atmospheric [CO2] and technological progress on baseline DMYs were used to estimate future grassland productivities (up to 2050) for low and medium CO2 emission scenarios of ...
46
4773.pdf
... The following statistical models assess the effects of the four experimental factors: elevated concentration of atmospheric CO2, infection with Barley yellow dwarf virus – PAV (BYDV), [r] ...
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