Search Results - "Shiga, Yoichi P."
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Carbonyl sulfide: comparing a mechanistic representation of the vegetation uptake in a land surface model and the leaf relative uptake approach
Published in Biogeosciences (12-05-2021)“…Land surface modellers need measurable proxies to constrain the quantity of carbon dioxide (CO2) assimilated by continental plants through photosynthesis,…”
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Forests dominate the interannual variability of the North American carbon sink
Published in Environmental research letters (01-08-2018)“…Understanding what drives the interannual variability (IAV) of the land carbon sink is crucial for improving future predictions of this important, yet…”
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Midwest US Croplands Determine Model Divergence in North American Carbon Fluxes
Published in AGU advances (01-06-2021)“…Large uncertainties in North American terrestrial carbon fluxes hinder regional climate projections. Terrestrial biosphere models (TBMs), the essential tools…”
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A statistical approach for isolating fossil fuel emissions in atmospheric inverse problems
Published in Journal of geophysical research. Atmospheres (27-10-2016)“…Independent verification and quantification of fossil fuel (FF) emissions constitutes a considerable scientific challenge. By coupling atmospheric observations…”
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COS-derived GPP relationships with temperature and light help explain high-latitude atmospheric CO₂ seasonal cycle amplification
Published in Proceedings of the National Academy of Sciences - PNAS (17-08-2021)“…In the Arctic and Boreal region (ABR) where warming is especially pronounced, the increase of gross primary production (GPP) has been suggested as an important…”
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Insights into the long-term (2005–2021) spatiotemporal evolution of summer ozone production sensitivity in the Northern Hemisphere derived with the Ozone Monitoring Instrument (OMI)
Published in Atmospheric chemistry and physics (18-09-2024)“…Tropospheric ozone (O3) formation depends on the relative abundance of precursor species, nitrogen oxides (NOx), and volatile organic compounds (VOCs)…”
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Multiscale assessment of North American terrestrial carbon balance
Published in Biogeosciences (16-02-2024)“…Comparisons of carbon uptake estimates from bottom-up terrestrial biosphere models (TBMs) to top-down atmospheric inversions help assess how well we understand…”
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Higher Autumn Temperatures Lead to Contrasting CO2 Flux Responses in Boreal Forests Versus Tundra and Shrubland
Published in Geophysical research letters (28-09-2021)“…The future carbon balance of boreal ecosystems under increasing temperatures is highly uncertain. In particular, the net effects of a longer growing season…”
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Atmospheric CO2 Observations Reveal Strong Correlation Between Regional Net Biospheric Carbon Uptake and Solar‐Induced Chlorophyll Fluorescence
Published in Geophysical research letters (28-01-2018)“…Recent studies have shown the promise of remotely sensed solar‐induced chlorophyll fluorescence (SIF) in informing terrestrial carbon exchange, but analyses…”
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Detecting fossil fuel emissions patterns from subcontinental regions using North American in situ CO2 measurements
Published in Geophysical research letters (28-06-2014)“…The ability to monitor fossil fuel carbon dioxide (FFCO2) emissions from subcontinental regions using atmospheric CO2 observations remains an important but…”
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COS-derived GPP relationships with temperature and light help explain high-latitude atmospheric CO 2 seasonal cycle amplification
Published in Proceedings of the National Academy of Sciences - PNAS (17-08-2021)“…In the Arctic and Boreal region (ABR) where warming is especially pronounced, the increase of gross primary production (GPP) has been suggested as an important…”
Get full text
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Biome-scale temperature sensitivity of ecosystem respiration revealed by atmospheric CO2 observations
Published in Nature ecology & evolution (01-08-2023)“…The temperature sensitivity of ecosystem respiration regulates how the terrestrial carbon sink responds to a warming climate but has been difficult to…”
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Solar‐Induced Fluorescence Helps Constrain Global Patterns in Net Biosphere Exchange, as Estimated Using Atmospheric CO2 Observations
Published in Journal of geophysical research. Biogeosciences (01-12-2023)“…Solar‐induced chlorophyll fluorescence (SIF) shows enormous promise as a proxy for photosynthesis and as a tool for modeling variability in gross primary…”
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Enhanced North American carbon uptake associated with El Niño
Published in Science advances (01-06-2019)“…Long-term atmospheric CO mole fraction and δ CO observations over North America document persistent responses to the El Niño-Southern Oscillation. We estimate…”
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Detecting fossil fuel emissions patterns from subcontinental regions using North American in situ CO 2 measurements
Published in Geophysical research letters (28-06-2014)“…The ability to monitor fossil fuel carbon dioxide (FFCO ) emissions from subcontinental regions using atmospheric CO observations remains an important but…”
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In-situ CO2 monitoring network evaluation and design: A criterion based on atmospheric CO2 variability
Published in Journal of geophysical research. Atmospheres (27-02-2013)“…Estimates of surface fluxes of carbon dioxide (CO2) can be derived from atmospheric CO2 concentration measurements through the solution of an inverse problem,…”
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Insights into the long-term
Published in Atmospheric chemistry and physics (18-09-2024)“…Tropospheric ozone (O.sub.3) formation depends on the relative abundance of precursor species, nitrogen oxides (NO.sub.x ), and volatile organic compounds…”
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18
Higher Autumn Temperatures Lead to Contrasting CO 2 Flux Responses in Boreal Forests Versus Tundra and Shrubland
Published in Geophysical research letters (28-09-2021)“…Abstract The future carbon balance of boreal ecosystems under increasing temperatures is highly uncertain. In particular, the net effects of a longer growing…”
Get full text
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Atmospheric CO 2 Observations Reveal Strong Correlation Between Regional Net Biospheric Carbon Uptake and Solar‐Induced Chlorophyll Fluorescence
Published in Geophysical research letters (28-01-2018)“…Abstract Recent studies have shown the promise of remotely sensed solar‐induced chlorophyll fluorescence (SIF) in informing terrestrial carbon exchange, but…”
Get full text
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