Search Results - "Piper, Stephen C."

Atmospheric evidence for a global secular increase in carbon isotopic discrimination of land photosynthesis by Keeling, Ralph F., Graven, Heather D., Welp, Lisa R., Resplandy, Laure, Bi, Jian, Piper, Stephen C., Sun, Ying, Bollenbacher, Alane, Meijer, Harro A. J.

“…A decrease in the 13C/12C ratio of atmospheric CO₂ has been documented by direct observations since 1978 and from ice core measurements since the industrial…”
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Interannual variability in the oxygen isotopes of atmospheric CO2 driven by El Niño by Welp, Lisa R., Keeling, Ralph F., Meijer, Harro A. J., Bollenbacher, Alane F., Piper, Stephen C., Yoshimura, Kei, Francey, Roger J., Allison, Colin E., Wahlen, Martin

“…El-Niño-driven variation in plant productivity Quantifying global-scale carbon assimilation by plants, or gross primary production (GPP), has been difficult…”
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Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999 by Nemani, Ramakrishna R., Keeling, Charles D., Hashimoto, Hirofumi, Jolly, William M., Piper, Stephen C., Tucker, Compton J., Myneni, Ranga B., Running, Steven W.

“…Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global…”
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Global and hemispheric CO2 sinks deduced from changes in atmospheric O2 concentration by KEELING, R. F, PIPER, S. C, HEIMANN, M

“…Keeling et al present an extensive O2/N2 data set which shows simultaneous trends in O2/N2 in both northern and southern hemispheres and allows the O2/N2…”
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Increasing summer net CO2 uptake in high northern ecosystems inferred from atmospheric inversions and comparisons to remote-sensing NDVI by Welp, Lisa R, Patra, Prabir K, Piper, Stephen C, Keeling, Ralph F

“…Warmer temperatures and elevated atmospheric CO2 concentrations over the last several decades have been credited with increasing vegetation activity and…”
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Impact of Changing Winds on the Mauna Loa CO2 Seasonal Cycle in Relation to the Pacific Decadal Oscillation by Jin, Yuming, Keeling, Ralph F., Rödenbeck, Christian, Patra, Prabir K., Piper, Stephen C., Schwartzman, Armin

“…Long‐term measurements at the Mauna Loa Observatory (MLO) show that the CO2 seasonal cycle amplitude (SCA) increased from 1959 to 2019 at an overall rate of…”
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Increasing summer net CO 2 uptake in high northern ecosystems inferred from atmospheric inversions and comparisons to remote-sensing NDVI by Welp, Lisa R., Patra, Prabir K., Rödenbeck, Christian, Nemani, Rama, Bi, Jian, Piper, Stephen C., Keeling, Ralph F.

“…Warmer temperatures and elevated atmospheric CO2 concentrations over the last several decades have been credited with increasing vegetation activity and…”
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The influence of seasonal water availability on global C3 versus C4 grassland biomass and its implications for climate change research by WINSLOW, Jerome C, HUNT, E. Raymond, PIPER, Stephen C

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A globally applicable model of daily solar irradiance estimated from air temperature and precipitation data by Winslow, Jerome C., Hunt, E.Raymond, Piper, Stephen C.

“…Although not measured at many ground stations, the total daily solar irradiance ( R s) received at the earth's surface is a critical component of ecosystem…”
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Impact of Changing Winds on the Mauna Loa CO 2 Seasonal Cycle in Relation to the Pacific Decadal Oscillation by Jin, Yuming, Keeling, Ralph F., Rödenbeck, Christian, Patra, Prabir K., Piper, Stephen C., Schwartzman, Armin

“…Long‐term measurements at the Mauna Loa Observatory (MLO) show that the CO 2 seasonal cycle amplitude (SCA) increased from 1959 to 2019 at an overall rate of…”
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Impact of Changing Winds on the Mauna Loa CO 2 Seasonal Cycle in Relation to the Pacific Decadal Oscillation by Jin, Yuming, Keeling, Ralph F., Rödenbeck, Christian, Patra, Prabir K., Piper, Stephen C., Schwartzman, Armin

“…Not provided…”
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Increasing summer net CO.sub.2 uptake in high northern ecosystems inferred from atmospheric inversions and comparisons to remote-sensing NDVI by Welp, Lisa R, Patra, Prabir K, Rödenbeck, Christian, Nemani, Rama, Bi, Jian, Piper, Stephen C, Keeling, Ralph F

“…Warmer temperatures and elevated atmospheric CO.sub.2 concentrations over the last several decades have been credited with increasing vegetation activity and…”
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The influence of seasonal water availability on global C 3 versus C 4 grassland biomass and its implications for climate change research by Winslow, Jerome C., Hunt, E.Raymond, Piper, Stephen C.

“…Climate-change induced alterations in the global distribution of cool season (C 3) and warm season (C 4) grasses would impact the global carbon cycle and have…”
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Interannual variability in the oxygen isotopes of atmospheric C[O.sub.2] driven by El Nino by Welp, Lisa R, Keeling, Ralph F, Meijer, Harro A.J, Bollenbacher, Alane F, Piper, Stephen C, Francey, Roger J, Allison, Colin E, Wahlen, Martin

“…The stable isotope ratios of atmospheric C[O.sub.2] ([.sup.18][O.sup./16]O and [.sup.13]C/[.sup.12]C) have been monitored since 1977 to improve our…”
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The Influence of Seasonal Water Availability on Global C sub(3) Versus C sub(4) Grassland Biomass and Its Implications for Climate Change Research by Winslow, Jerome C, Hunt, E R, Piper, Stephen C

“…Experts have determined that global changes in the distribution of cool season (C sub(3)) and warm season (C sub(4)) grasses due to on-going anthropogenic…”
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Global and hemispheric CO 2 sinks deduced from changes in atmospheric O 2 concentration by Keeling, Ralph F, Piper, Stephen C, Heimann, Martin

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Global and Hemispheric CO sub(2) Sinks Deduced from Changes in Atmospheric O sub(2) Concentration by Keeling, Ralph F, Piper, Stephen C, Heimann, Martin

“…Recent research has indicated that the global budget for sources and sinks of anthropogenic carbon dioxide is out of balance. This assertion holds true unless…”
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