| No significant increase in long-term CH4 emissions on North Slope of Alaska despite significant increase in air temperature - :18320 | Office of Oceanic and Atmospheric Research (OAR)
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No significant increase in long-term CH4 emissions on North Slope of Alaska despite significant increase in air temperature
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    1. A comprehensive estimate for loss of atmospheric carbon tetrachloride (CCl4) to the ocean
      Personal Author:
      Butler, J. H.; Yvon-Lewis, S. A.; Lobert, J. M.; King, D. B.; Montzka, S. A.; Bullister, J. L.; Koropalov, V.; Elkins, J. W.; Hall, B. D.; Hu, L.; Liu, Y. N.;
      Published:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(17), 10899-10910.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Extensive undersaturations of carbon tetrachloride (CCl4) in Pacific, Atlantic, and Southern Ocean surface waters indicate that atmospheric CCl4 is consumed in large amounts by the ocean. Observations made on 16 research cruises between 1987 and 2010...
      File Type:
      Filetype[PDF - 2.61 MB]
    2. Recent divergences in stratospheric water vapor measurements by frost point hygrometers and the Aura Microwave Limb Sounder
      Personal Author:
      Hurst, D. F.; Read, W. G.; Vomel, H.; Selkirk, H. B.; Rosenlof, K. H.; Davis, S. M.; Hall, E. G.; Jordan, A. F.; Oltmans, S. J.;
      Published:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(9), 4447-4457.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Balloon-borne frost point hygrometers (FPs) and the Aura Microwave Limb Sounder (MLS) provide high-quality vertical profile measurements of water vapor in the upper troposphere and lower stratosphere (UTLS). A previous comparison of stratospheric wat...
      File Type:
      Filetype[PDF - 2.10 MB]
    3. Strong regional atmospheric C-14 signature of respired CO2 observed from a tall tower over the midwestern United States
      Personal Author:
      LaFranchi, B. W.; McFarlane, K. J.; Miller, J. B.; Lehman, S. J.; Phillips, C. L.; Andrews, A. E.; Tans, P. P.; Chen, H.; Liu, Z.; Turnbull, J. C.; Xu, X.; Guilderson, T. P.;
      Published:
      2016
      Source:
      Journal of Geophysical Research-Biogeosciences, 121(8), 2275-2295.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Radiocarbon in CO2 ((CO2)-C-14) measurements can aid in discriminating between fast (< 1 year) and slower (> 5-10 years) cycling of C between the atmosphere and the terrestrial biosphere due to the 14C disequilibrium between atmospheric and terrestri...
      File Type:
      Filetype[PDF - 2.28 MB]
    4. Continuous and high-precision atmospheric concentration measurements of COS, CO2, CO and H2O using a quantum cascade laser spectrometer (QCLS)
      Personal Author:
      Kooijmans, L. M. J.; Uitslag, N. A. M.; Zahniser, M. S.; Nelson, D. D.; Montzka, S. A.; Chen, H. L.;
      Published:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(11), 5293-5314.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Carbonyl sulfide (COS) has been suggested as a useful tracer for gross primary production as it is taken up by plants in a similar way as CO2. To explore and verify the application of this novel tracer, it is highly desired to develop the ability to ...
      File Type:
      Filetype[PDF - 5.11 MB]
    5. Investigating Alaskan methane and carbon dioxide fluxes using measurements from the CARVE tower
      Personal Author:
      Karion, A.; Sweeney, C.; Miller, J. B.; Andrews, A. E.; Commane, R.; Dinardo, S.; Henderson, J. M.; Lindaas, J.; Lin, J. C.; Luus, K. A.; Newberger, T.; Tans, P.; Wofsy, S. C.; Wolter, S.; Miller, C. E.;
      Published:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(8), 5383-5398.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Northern high-latitude carbon sources and sinks, including those resulting from degrading permafrost, are thought to be sensitive to the rapidly warming climate. Because the near-surface atmosphere integrates surface fluxes over large ( aEuro-500-100...
      File Type:
      Filetype[PDF - 3.56 MB]
    6. Inverse modeling of GOSAT-retrieved ratios of total column CH4 and CO2 for 2009 and 2010
      Personal Author:
      Pandey, S.; Houweling, S.; Krol, M.; Aben, I.; Chevallier, F.; Dlugokencky, E. J.; Gatti, L. V.; Gloor, E.; Miller, J. B.; Detmers, R.; Machida, T.; Rockmann, T.;
      Published:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(8), 5043-5062.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      This study investigates the constraint provided by greenhouse gas measurements from space on surface fluxes. Imperfect knowledge of the light path through the atmosphere, arising from scattering by clouds and aerosols, can create biases in column mea...
      File Type:
      Filetype[PDF - 3.49 MB]
    7. A multiyear estimate of methane fluxes in Alaska from CARVE atmospheric observations
      Personal Author:
      Miller, S. M.; Miller, C. E.; Commane, R.; Chang, R. Y. W.; Dinardo, S. J.; Henderson, J. M.; Karion, A.; Lindaas, J.; Melton, J. R.; Miller, J. B.; Sweeney, C.; Wofsy, S. C.; Michalak, A. M.;
      Published:
      2016
      Source:
      Global Biogeochemical Cycles, 30(10), 1441-1453.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Methane (CH4) fluxes from Alaska and other arctic regions may be sensitive to thawing permafrost and future climate change, but estimates of both current and future fluxes from the region are uncertain. This study estimates CH4 fluxes across Alaska f...
      File Type:
      Filetype[PDF - 2.74 MB]
    8. Evaluation of wetland methane emissions across North America using atmospheric data and inverse modeling
      Personal Author:
      Miller, S. M.; Commane, R.; Melton, J. R.; Andrews, A. E.; Benmergui, J.; Dlugokencky, E. J.; Janssens-Maenhout, G.; Michalak, A. M.; Sweeney, C.; Worthy, D. E. J.;
      Published:
      2016
      Source:
      Biogeosciences, 13(4), 1329-1339.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Existing estimates of methane (CH4) fluxes from North American wetlands vary widely in both magnitude and distribution. In light of these differences, this study uses atmospheric CH4 observations from the US and Canada to analyze seven different bott...
      File Type:
      Filetype[PDF - 1.66 MB]
    9. Mesoscale modulation of air-sea CO2 flux in Drake Passage
      Personal Author:
      Song, H.; Marshall, J.; Munro, D. R.; Dutkiewicz, S.; Sweeney, C.; McGillicuddy, D. J.; Hausmann, U.;
      Published:
      2016
      Source:
      Journal of Geophysical Research-Oceans, 121(9), 6635-6649.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      We investigate the role of mesoscale eddies in modulating air-sea CO2 flux and associated biogeochemical fields in Drake Passage using in situ observations and an eddy-resolving numerical model. Both observations and model show a negative correlation...
      File Type:
      Filetype[PDF - 4.06 MB]
    10. Detecting regional patterns of changing CO2 flux in Alaska
      Personal Author:
      Parazoo, N. C.; Commane, R.; Wofsy, S. C.; Koven, C. D.; Sweeney, C.; Lawrence, D. M.; Lindaas, J.; Chang, R. Y. W.; Miller, C. E.;
      Published:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(28), 7733-7738.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      With rapid changes in climate and the seasonal amplitude of carbon dioxide (CO2) in the Arctic, it is critical that we detect and quantify the underlying processes controlling the changing amplitude of CO2 to better predict carbon cycle feedbacks in ...
      File Type:
      Filetype[PDF - 1.21 MB]
    11. MIPAS IMK/IAA CFC-11 (CCl3F) and CFC-12 (CCl2F2) measurements: accuracy, precision and long-term stability
      Personal Author:
      Eckert, E.; Laeng, A.; Lossow, S.; Kellmann, S.; Stiller, G.; von Clarmann, T.; Glatthor, N.; Hopfner, M.; Kiefer, M.; Oelhaf, H.; Orphal, J.; Funke, B.; Grabowski, U.; Haenel, F.; Linden, A.; Wetzel, G.; Woiwode, W.; Bernath, P. F.; Boone, C.; Dutton, G. S.; Elkins, J. W.; Engel, A.; Gille, J. C.; Kolonjari, F.; Sugita, T.; Toon, G. C.; Walker, K. A.;
      Published:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(7), 3355-3389.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Profiles of CFC-11 (CCl3F) and CFC-12 (CCl2F2) of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) aboard the European satellite Envisat have been retrieved from versions MIPAS/4.61 to MI-PAS/4.62 and MIPAS/5.02 to MIPAS/5.06 lev...
      File Type:
      Filetype[PDF - 12.56 MB]
    12. Rising atmospheric methane: 2007-2014 growth and isotopic shift
      Personal Author:
      Nisbet, E. G.; Dlugokencky, E. J.; Manning, M. R.; Lowry, D.; Fisher, R. E.; France, J. L.; Michel, S. E.; Miller, J. B.; White, J. W. C.; Vaughn, B.; Bousquet, P.; Pyle, J. A.; Warwick, N. J.; Cain, M.; Brownlow, R.; Zazzeri, G.; Lanoiselle, M.; Manning, A. C.; Gloor, E.; Worthy, D. E. J.; Brunke, E. G.; Labuschagne, C.; Wolff, E. W.; Ganesan, A. L.;
      Published:
      2016
      Source:
      Global Biogeochemical Cycles, 30(9), 1356-1370.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      From 2007 to 2013, the globally averaged mole fraction of methane in the atmosphere increased by 5.7 +/- 1.2 ppb yr(-1). Simultaneously, delta C-13(CH4) (a measure of the C-13/C-12 isotope ratio in methane) has shifted to significantly more negative ...
      File Type:
      Filetype[PDF - 1.72 MB]
    13. Controlled weather balloon ascents and descents for atmospheric research and climate monitoring
      Personal Author:
      Krauchi, A.; Philipona, R.; Romanens, G.; Hurst, D. F.; Hall, E. G.; Jordan, A. F.;
      Published:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(3), 929-938.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      In situ upper-air measurements are often made with instruments attached to weather balloons launched at the surface and lifted into the stratosphere. Present-day balloon-borne sensors allow near-continuous measurements from the Earth's surface to abo...
      File Type:
      Filetype[PDF - 5.50 MB]
    14. Summertime surface O-3 behavior and deposition to tundra in the Alaskan Arctic
      Personal Author:
      Van Dam, B.; Helmig, D.; Doskey, P. V.; Oltmans, S. J.;
      Published:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(13), 8055-8066.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Atmospheric turbulence quantities, boundary layer ozone (O-3) levels, and O-3 deposition to the tundra surface were investigated at Toolik Lake, AK, during the 2011 summer season. Beginning immediately after snowmelt, a diurnal cycle of O-3 in the at...
      File Type:
      Filetype[PDF - 2.83 MB]
    15. New approaches to quantifying aerosol influence on the cloud radiative effect
      Personal Author:
      Feingold, G.; McComiskey, A.; Yamaguchi, T.; Johnson, J. S.; Carslaw, K. S.; Schmidt, K. S.;
      Published:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(21), 5812-5819.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      The topic of cloud radiative forcing associated with the atmospheric aerosol has been the focus of intense scrutiny for decades. The enormity of the problem is reflected in the need to understand aspects such as aerosol composition, optical propertie...
      File Type:
      Filetype[PDF - 1006.31 KB]
    16. Airborne methane remote measurements reveal heavy-tail flux distribution in Four Corners region
      Personal Author:
      Frankenberg, C.; Thorpe, A. K.; Thompson, D. R.; Hulley, G.; Kort, E. A.; Vance, N.; Borchardt, J.; Krings, T.; Gerilowski, K.; Sweeney, C.; Conley, S.; Bue, B. D.; Aubrey, A. D.; Hook, S.; Green, R. O.;
      Published:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(35), 9734-9739.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Methane (CH4) impacts climate as the second strongest anthropogenic greenhouse gas and air quality by influencing tropospheric ozone levels. Space-based observations have identified the Four Corners region in the Southwest United States as an area of...
      File Type:
      Filetype[PDF - 1.96 MB]
    17. Separation of biospheric and fossil fuel fluxes of CO2 by atmospheric inversion of CO2 and (CO2)-C-14 measurements: Observation System Simulations
      Personal Author:
      Basu, S.; Miller, J. B.; Lehman, S.;
      Published:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(9), 5665-5683.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      National annual total CO2 emissions from combustion of fossil fuels are likely known to within 5-10aEuro-% for most developed countries. However, uncertainties are inevitably larger (by unknown amounts) for emission estimates at regional and monthly ...
      File Type:
      Filetype[PDF - 6.92 MB]
    18. Atmospheric histories and global emissions of halons H-1211 (CBrClF2), H-1301 (CBrF3), and H-2402 (CBrF2CBrF2)
      Personal Author:
      Vollmer, M. K.; Muhle, J.; Trudinger, C. M.; Rigby, M.; Montzka, S. A.; Harth, C. M.; Miller, B. R.; Henne, S.; Krummel, P. B.; Hall, B. D.; Young, D.; Kim, J.; Arduini, J.; Wenger, A.; Yao, B.; Reimann, S.; O'Doherty, S.; Maione, M.; Etheridge, D. M.; Li, S. L.; Verdonik, D. P.; Park, S.; Dutton, G.; Steele, L. P.; Lunder, C. R.; Rhee, T. S.; Hermansen, O.; Schmidbauer, N.; Wang, R. H. J.; Hill, M.; Salameh, P. K.; Langenfelds, R. L.; Zhou, L. X.; Blunier, T.; Schwander, J.; Elkins, J. W.; Butler, J. H.; Simmonds, P. G.; Weiss, R. F.; Prinn, R. G.; Fraser, P. J.;
      Published:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(7), 3663-3686.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      We report ground-based atmospheric measurements and emission estimates for the halons H-1211 (CBrClF2), H-1301 (CBrF3), and H-2402 (CBrF2CBrF2) from the AGAGE (Advanced Global Atmospheric Gases Experiment) and the National Oceanic and Atmospheric Adm...
      File Type:
      Filetype[PDF - 2.26 MB]
    19. Low-CCN concentration air masses over the eastern North Atlantic: Seasonality, meteorology, and drivers
      Personal Author:
      Wood, R.; Stemmler, J. D.; Remillard, J.; Jefferson, A.;
      Published:
      2017
      Source:
      Journal of Geophysical Research-Atmospheres, 122(2), 1203-1223.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      A 20 month cloud condensation nucleus concentration (N-CCN) data set from Graciosa Island (39 degrees N, 28 degrees W) in the remote North Atlantic is used to characterize air masses with low cloud condensation nuclei (CCN) concentrations. Low-CCN ev...
      File Type:
      Filetype[PDF - 6.32 MB]
    20. The influence of daily meteorology on boreal fire emissions and regional trace gas variability
      Personal Author:
      Wiggins, E. B.; Veraverbeke, S.; Henderson, J. M.; Karion, A.; Miller, J. B.; Lindaas, J.; Commane, R.; Sweeney, C.; Luus, K. A.; Tosca, M. G.; Dinardo, S. J.; Wofsy, S.; Miller, C. E.; Randerson, J. T.;
      Published:
      2016
      Source:
      Journal of Geophysical Research-Biogeosciences, 121(11), 2793-2810.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      Relationships between boreal wildfire emissions and day-to-day variations in meteorological variables are complex and have important implications for the sensitivity of high-latitude ecosystems to climate change. We examined the influence of environm...
      File Type:
      Filetype[PDF - 2.44 MB]
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    Miller, S. M.; Miller, C. E.; Commane, R.; Chang, R. Y. W.; Dinardo, S. J.; Henderson, J. M.; Karion, A.; Lindaas, J.; Melton, J. R.; Miller, J. B.; Sweeney, C.; Wofsy, S. C.; Michalak, A. M.;
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