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A. Shekhar, J. Chen, J. C. Paetzold, F. Dietrich, X. Zhao, S. Bhattacharjee, V. Ruisinger, and S. C. Wofsy. 2020. “Anthropogenic CO(2)emissions Assessment of Nile Delta Using XCO(2)and SIF Data from OCO-2 Satellite”. Environmental Research Letters, 15, 9
A. Shekhar, J. Chen, J. C. Paetzold, F. Dietrich, X. Zhao, S. Bhattacharjee, V. Ruisinger, and S. C. Wofsy. 2020. “Anthropogenic CO(2)emissions Assessment of Nile Delta Using XCO(2)and SIF Data from OCO-2 Satellite”. Environmental Research Letters, 15, 9
We estimate CO2 emissions from the Nile Delta region of Egypt, using over five years of column-averaged CO2 dry air mole fraction (XCO2) data from the NASA's OCO-2 satellite. The Nile Delta has significant anthropogenic emissions of CO2 from urban areas...
Siyuan Wang, Eric C. Apel, Rebecca H. Schwantes, Kelvin H. Bates, Daniel J. Jacob, Emily V. Fischer, Rebecca S. Hornbrook, Alan J. Hills, Louisa K. Emmons, Laura L. Pan, Shawn Honomichl, Simone Tilmes, Jean-François Lamarque, Mingxi Yang, Christa A. Marandino, Eric S. Saltzman, Warren Bruyn, Sohiko Kameyama, Hiroshi Tanimoto, Yuko Omori, Samuel R. Hall, Kirk Ullmann, Thomas B. Ryerson, Chelsea R. Thompson, Jeff Peischl, Bruce C. Daube, Róisín Commane, Kathryn McKain, Colm Sweeney, Alexander B. Thames, David O. Miller, William H. Brune, Glenn S. Diskin, Joshua P. DiGangi, and Steven C. Wofsy. 2020. “Global Atmospheric Budget of Acetone: Air-Sea Exchange and the Contribution to Hydroxyl Radicals”. Journal of Geophysical Research-Atmospheres, 125, 15, Pp. e2020JD032553
Siyuan Wang, Eric C. Apel, Rebecca H. Schwantes, Kelvin H. Bates, Daniel J. Jacob, Emily V. Fischer, Rebecca S. Hornbrook, Alan J. Hills, Louisa K. Emmons, Laura L. Pan, Shawn Honomichl, Simone Tilmes, Jean-François Lamarque, Mingxi Yang, Christa A. Marandino, Eric S. Saltzman, Warren Bruyn, Sohiko Kameyama, Hiroshi Tanimoto, Yuko Omori, Samuel R. Hall, Kirk Ullmann, Thomas B. Ryerson, Chelsea R. Thompson, Jeff Peischl, Bruce C. Daube, Róisín Commane, Kathryn McKain, Colm Sweeney, Alexander B. Thames, David O. Miller, William H. Brune, Glenn S. Diskin, Joshua P. DiGangi, and Steven C. Wofsy. 2020. “Global Atmospheric Budget of Acetone: Air-Sea Exchange and the Contribution to Hydroxyl Radicals”. Journal of Geophysical Research-Atmospheres, 125, 15, Pp. e2020JD032553
Acetone is one of the most abundant oxygenated volatile organic compounds (VOCs) in the atmosphere. The oceans impose a strong control on atmospheric acetone, yet the oceanic fluxes of acetone remain poorly constrained. In this work, the global budget of...
Y. D. Barrera, T. Nehrkorn, J. Hegarty, M. Sargent, J. Benmergui, E. Gottlieb, S. C. Wofsy, P. DeCola, L. Hutyra, and T. Jones. 2019. “Using Lidar Technology To Assess Urban Air Pollution and Improve Estimates of Greenhouse Gas Emissions in Boston”. Environmental Science & Technology, 53, 15, Pp. 8957-66
Y. D. Barrera, T. Nehrkorn, J. Hegarty, M. Sargent, J. Benmergui, E. Gottlieb, S. C. Wofsy, P. DeCola, L. Hutyra, and T. Jones. 2019. “Using Lidar Technology To Assess Urban Air Pollution and Improve Estimates of Greenhouse Gas Emissions in Boston”. Environmental Science & Technology, 53, 15, Pp. 8957-66
Simulation of the planetary boundary layer (PBL) is key for forecasting air quality and estimating greenhouse gas (GHG) emissions in cities. Here we conducted the first long-term and continuous study of PBL heights (PBLHs) in Boston, MA, using a compact...
M. O. Battle, J. W. Munger, M. Conley, E. Sofen, R. Perry, R. Hart, Z. Davis, J. Scheckman, J. Woogerd, K. Graeter, S. Seekins, S. David, and J. Carpenter. 2019. “Atmospheric Measurements of the Terrestrial O-2 : CO2 Exchange Ratio of a Midlatitude Forest”. Atmospheric Chemistry and Physics, 19, 13, Pp. 8687-8701
M. O. Battle, J. W. Munger, M. Conley, E. Sofen, R. Perry, R. Hart, Z. Davis, J. Scheckman, J. Woogerd, K. Graeter, S. Seekins, S. David, and J. Carpenter. 2019. “Atmospheric Measurements of the Terrestrial O-2 : CO2 Exchange Ratio of a Midlatitude Forest”. Atmospheric Chemistry and Physics, 19, 13, Pp. 8687-8701
Measurements of atmospheric O2 have been used to quantify large-scale fluxes of carbon between the oceans, atmosphere and land since 1992 (Keeling and Shertz, 1992). With time, datasets have grown and estimates of fluxes have become more precise, but a...
Clifton, O. E., A. M. Fiore, J. W. Munger, and R. Wehr. 2019. “Spatiotemporal Controls on Observed Daytime Ozone Deposition Velocity Over Northeastern US Forests During Summer”. Journal of Geophysical Research-Atmospheres, 124, 10, Pp. 5612-28
Clifton, O. E., A. M. Fiore, J. W. Munger, and R. Wehr. 2019. “Spatiotemporal Controls on Observed Daytime Ozone Deposition Velocity Over Northeastern US Forests During Summer”. Journal of Geophysical Research-Atmospheres, 124, 10, Pp. 5612-28
Spatiotemporal variability in ozone dry deposition is often overlooked despite its implications for interpreting and modeling tropospheric ozone concentrations accurately. Understanding the influences of stomatal versus nonstomatal deposition processes on...
G. Eshel, A. Dayalu, S. C. Wofsy, J. W. Munger, and E. Tziperman. 2019. “Listening to the Forest: An Artificial Neural Network-Based Model of Carbon Uptake at Harvard Forest”. Journal of Geophysical Research-Biogeosciences, 124, 3, Pp. 461-78
G. Eshel, A. Dayalu, S. C. Wofsy, J. W. Munger, and E. Tziperman. 2019. “Listening to the Forest: An Artificial Neural Network-Based Model of Carbon Uptake at Harvard Forest”. Journal of Geophysical Research-Biogeosciences, 124, 3, Pp. 461-78
2 inexorable rise propels anthropogenic climate change. Modeling and mechanistically understanding C uptake by the terrestrial biosphere are thus of broad societal concerns. Yet despite considerable progress, scaling up point observations to landscape and...
C. Floerchinger, K. McKain, T. Bonin, J. Peischl, S. C. Biraud, C. Miller, T. B. Ryerson, S. C. Wofsy, and C. Sweeney. 2019. “Methane Emissions from Oil and Gas Production on the North Slope of Alaska”. Atmospheric Environment, 218
C. Floerchinger, K. McKain, T. Bonin, J. Peischl, S. C. Biraud, C. Miller, T. B. Ryerson, S. C. Wofsy, and C. Sweeney. 2019. “Methane Emissions from Oil and Gas Production on the North Slope of Alaska”. Atmospheric Environment, 218
Recent warming of the Arctic has motivated assessments of methane (CH4) release from the North Slope Region of Alaska (NSRA). This study examines the contributions of thermogenic emissions from the Prudhoe Bay Oil Field (PBOF) to the elevated...
Benjamin Gaubert, Britton B. Stephens, Sourish Basu, Frédéric Chevallier, Feng Deng, Eric A. Kort, Prabir K. Patra, Wouter Peters, Christian Rödenbeck, Tazu Saeki, David Schimel, Ingrid Van Laan-Luijk, Steven Wofsy, and Yi Yin. 2019. “Global Atmospheric CO2 Inverse Models Converging on Neutral Tropical Land Exchange, But Disagreeing on Fossil Fuel and Atmospheric Growth Rate”. Biogeosciences, 16, 1, Pp. 117-34
Benjamin Gaubert, Britton B. Stephens, Sourish Basu, Frédéric Chevallier, Feng Deng, Eric A. Kort, Prabir K. Patra, Wouter Peters, Christian Rödenbeck, Tazu Saeki, David Schimel, Ingrid Van Laan-Luijk, Steven Wofsy, and Yi Yin. 2019. “Global Atmospheric CO2 Inverse Models Converging on Neutral Tropical Land Exchange, But Disagreeing on Fossil Fuel and Atmospheric Growth Rate”. Biogeosciences, 16, 1, Pp. 117-34
We have compared a suite of recent global CO2 atmospheric inversion results to independent airborne observations and to each other, to assess their dependence on differences in northern extratropical (NET) vertical transport and to identify some of the...
Rossella Guerrieri, Soumaya Belmecheri, Scott V. Ollinger, Heidi Asbjornsen, Katie Jennings, Jingfeng Xiao, Benjamin D. Stocker, Mary Martin, David Y. Hollinger, Rosvel Bracho-Garrillo, Kenneth Clark, Sabina Dore, Thomas Kolb, J. William Munger, Kimberly Novick, and Andrew D. Richardson. 2019. “Disentangling the Role of Photosynthesis and Stomatal Conductance on Rising Forest Water-Use Efficiency”. Proceedings of the National Academy of Sciences of the United States of America, 116, 34, Pp. 16909-14
Rossella Guerrieri, Soumaya Belmecheri, Scott V. Ollinger, Heidi Asbjornsen, Katie Jennings, Jingfeng Xiao, Benjamin D. Stocker, Mary Martin, David Y. Hollinger, Rosvel Bracho-Garrillo, Kenneth Clark, Sabina Dore, Thomas Kolb, J. William Munger, Kimberly Novick, and Andrew D. Richardson. 2019. “Disentangling the Role of Photosynthesis and Stomatal Conductance on Rising Forest Water-Use Efficiency”. Proceedings of the National Academy of Sciences of the United States of America, 116, 34, Pp. 16909-14
Multiple lines of evidence suggest that plant water-use efficiency (WUE)—the ratio of carbon assimilation to water loss—has increased in recent decades. Although rising atmospheric CO2 has been proposed as the principal cause, the underlying physiological...
Marcos Longo, Ryan G. Knox, Naomi M. Levine, Abigail L. S. Swann, David M. Medvigy, Michael C. Dietze, Yeonjoo Kim, Ke Zhang, Damien Bonal, Benoit Burban, Plínio B. Camargo, Matthew N. Hayek, Scott R. Saleska, Rodrigo Silva, Rafael L. Bras, Steven C. Wofsy, and Paul R. Moorcroft. 2019. “The Biophysics, Ecology, and Biogeochemistry of Functionally Diverse, Vertically and Horizontally Heterogeneous Ecosystems: The Ecosystem Demography Model, Version 2.2-Part 2: Model Evaluation for Tropical South America”. Geoscientific Model Development, 12, 10, Pp. 4347-74
Marcos Longo, Ryan G. Knox, Naomi M. Levine, Abigail L. S. Swann, David M. Medvigy, Michael C. Dietze, Yeonjoo Kim, Ke Zhang, Damien Bonal, Benoit Burban, Plínio B. Camargo, Matthew N. Hayek, Scott R. Saleska, Rodrigo Silva, Rafael L. Bras, Steven C. Wofsy, and Paul R. Moorcroft. 2019. “The Biophysics, Ecology, and Biogeochemistry of Functionally Diverse, Vertically and Horizontally Heterogeneous Ecosystems: The Ecosystem Demography Model, Version 2.2-Part 2: Model Evaluation for Tropical South America”. Geoscientific Model Development, 12, 10, Pp. 4347-74
The Ecosystem Demography model version 2.2 (ED-2.2) is a terrestrial biosphere model that simulates the biophysical, ecological, and biogeochemical dynamics of vertically and horizontally heterogeneous terrestrial ecosystems. In a companion paper (Longo...
Marcos Longo, Ryan G. Knox, David M. Medvigy, Naomi M. Levine, Michael C. Dietze, Yeonjoo Kim, Abigail L. S. Swann, Ke Zhang, Christine R. Rollinson, Rafael L. Bras, Steven C. Wofsy, and Paul R. Moorcroft. 2019. “The Biophysics, Ecology, and Biogeochemistry of Functionally Diverse, Vertically and Horizontally Heterogeneous Ecosystems: The Ecosystem Demography Model, Version 2.2-Part 1: Model Description”. Geoscientific Model Development, 12, 10, Pp. 4309-46
Marcos Longo, Ryan G. Knox, David M. Medvigy, Naomi M. Levine, Michael C. Dietze, Yeonjoo Kim, Abigail L. S. Swann, Ke Zhang, Christine R. Rollinson, Rafael L. Bras, Steven C. Wofsy, and Paul R. Moorcroft. 2019. “The Biophysics, Ecology, and Biogeochemistry of Functionally Diverse, Vertically and Horizontally Heterogeneous Ecosystems: The Ecosystem Demography Model, Version 2.2-Part 1: Model Description”. Geoscientific Model Development, 12, 10, Pp. 4309-46
Earth system models (ESMs) have been developed to represent the role of terrestrial ecosystems on the energy, water, and carbon cycles. However, many ESMs still lack representation of within-ecosystem heterogeneity and diversity. In this paper, we present...
S. J. Silva, C. L. Heald, S. Ravela, I. Mammarella, and J. W. Munger. 2019. “A Deep Learning Parameterization for Ozone Dry Deposition Velocities”. Geophysical Research Letters, 46, 2, Pp. 983-89
S. J. Silva, C. L. Heald, S. Ravela, I. Mammarella, and J. W. Munger. 2019. “A Deep Learning Parameterization for Ozone Dry Deposition Velocities”. Geophysical Research Letters, 46, 2, Pp. 983-89
The loss of ozone to terrestrial and aquatic systems, known as dry deposition, is a highly uncertain process governed by turbulent transport, interfacial chemistry, and plant physiology. We demonstrate the value of using Deep Neural Networks (DNN) in...