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New approaches to quantifying aerosol influence on the cloud radiative effect
  • Published Date:
    2016
  • Source:
    Proceedings of the National Academy of Sciences of the United States of America, 113(21), 5812-5819.
Filetype[PDF-1006.31 KB]


Details:
  • Personal Author:
  • 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 properties, cloud condensation, and ice nucleation potential, along with the global distribution of these properties, controlled by emissions, transport, transformation, and sinks. Equally daunting is that clouds themselves are complex, turbulent, microphysical entities and, by their very nature, ephemeral and hard to predict. Atmospheric general circulation models represent aerosol-cloud interactions at ever-increasing levels of detail, but these models lack the resolution to represent clouds and aerosol-cloud interactions adequately. There is a dearth of observational constraints on aerosol-cloud interactions. We develop a conceptual approach to systematically constrain the aerosol-cloud radiative effect in shallow clouds through a combination of routine process modeling and satellite and surface-based shortwave radiation measurements. We heed the call to merge Darwinian and Newtonian strategies by balancing microphysical detail with scaling and emergent properties of the aerosol-cloud radiation system.
  • DOI:
    http://dx.doi.org/10.1073/pnas.1514035112
  • Document Type:
    Journal Article
  • Collection(s):
    NOAA Cooperative Institutes
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • Supporting Files:
    No Additional Files
    1. Surrogate gas prediction model as a proxy for Delta C-14-based measurements of fossil fuel CO2
      Personal Author:
      Coakley, K. J.; Miller, J. B.; Montzka, S. A.; Sweeney, C.; Miller, B.;
      Published Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(12), 7489-7505.
      Series:
      CIRES (Cooperative Institute for Research in Environmental Sciences)
      Description:
      The measured C-14:C-12 isotopic ratio of atmospheric CO2 (and its associated derived Delta C-14 value) is an ideal tracer for determination of the fossil fuel derived CO2 enhancement contributing to any atmospheric CO2 measurement (C-ff). Given enoug...
      File Type:
      Filetype[PDF - 1.76 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 Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(9), 4447-4457.
      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. 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 Date:
      2017
      Source:
      Journal of Geophysical Research-Atmospheres, 122(2), 1203-1223.
      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]
    4. 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 Date:
      2016
      Source:
      Journal of Geophysical Research-Atmospheres, 121(13), 8055-8066.
      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]
    5. The Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database: a long-term database for climate studies
      Personal Author:
      Davis, S. M.; Rosenlof, K. H.; Hassler, B.; Hurst, D. F.; Read, W. G.; Vomel, H.; Selkirk, H.; Fujiwara, M.; Damadeo, R.;
      Published Date:
      2016
      Source:
      Earth System Science Data, 8(2), 461-490.
      Description:
      In this paper, we describe the construction of the Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) database, which includes vertically resolved ozone and water vapor data from a subset of the limb profiling satellite instruments operatin...
      File Type:
      Filetype[PDF - 11.92 MB]
    6. O-3, CH4, CO2, CO, NO2 and NMHC aircraft measurements in the Uinta Basin oil and gas region under low and high ozone conditions in winter 2012 and 2013
      Personal Author:
      Oltmans, S. J.; Karion, A.; Schnell, R. C.; Petron, G.; Helmig, D.; Montzka, S. A.; Wolter, S.; Neff, D.; Miller, B. R.; Hueber, J.; Conley, S.; Johnson, B. J.; Sweeney, C.;
      Published Date:
      2016
      Source:
      Elementa-Science of the Anthropocene, 4: 000132.
      Description:
      Instrumented aircraft measuring air composition in the Uinta Basin, Utah, during February 2012 and January-February 2013 documented dramatically different atmospheric ozone (O-3) mole fractions. In 2012 O-3 remained near levels of similar to 40 ppb i...
      File Type:
      Filetype[PDF - 6.01 MB]
    7. 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 Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(3), 929-938.
      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]
    8. Regional Methane Emission Estimation Based on Observed Atmospheric Concentrations (2002-2012)
      Personal Author:
      Patra, P. K.; Saeki, T.; Dlugokencky, E. J.; Ishijima, K.; Umezawa, T.; Ito, A.; Aoki, S.; Morimoto, S.; Kort, E. A.; Crotwell, A.;
      Published Date:
      2016
      Source:
      Journal of the Meteorological Society of Japan, 94(1), 91-113.
      Description:
      Methane (CH4) plays important roles in atmospheric chemistry and short-term forcing of climate. A clear understanding of atmospheric CH4's budget of emissions and losses is required to aid sustainable management of Earth's future environment. We used...
      File Type:
      Filetype[PDF - 16.15 MB]
    9. 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 Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(8), 5383-5398.
      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]
    10. 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 Date:
      2016
      Source:
      Biogeosciences, 13(4), 1329-1339.
      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]
    11. 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 Date:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(28), 7733-7738.
      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]
    12. 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 Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(9), 5665-5683.
      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]
    13. 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 Date:
      2016
      Source:
      Global Biogeochemical Cycles, 30(9), 1356-1370.
      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]
    14. Advancements, measurement uncertainties, and recent comparisons of the NOAA frost point hygrometer
      Personal Author:
      Hall, E. G.; Jordan, A. F.; Hurst, D. F.; Oltmans, S. J.; Vomel, H.; Kuhnreich, B.; Ebert, V.;
      Published Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(9), 4295-4310.
      Description:
      The NOAA frost point hygrometer (FPH) is a balloon-borne instrument flown monthly at three sites to measure water vapor profiles up to 28 km. The FPH record from Boulder, Colorado, is the longest continuous stratospheric water vapor record. The instr...
      File Type:
      Filetype[PDF - 3.06 MB]
    15. 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 Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(7), 3355-3389.
      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]
    16. 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 Date:
      2016
      Source:
      Atmospheric Chemistry and Physics, 16(17), 10899-10910.
      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]
    17. No significant increase in long-term CH4 emissions on North Slope of Alaska despite significant increase in air temperature
      Personal Author:
      Sweeney, C.; Dlugokencky, E.; Miller, C. E.; Wofsy, S.; Karion, A.; Dinardo, S.; Chang, R. Y. W.; Miller, J. B.; Bruhwiler, L.; Crotwell, A. M.; Newberger, T.; McKain, K.; Stone, R. S.; Wolter, S. E.; Lang, P. E.; Tans, P.;
      Published Date:
      2016
      Source:
      Geophysical Research Letters, 43(12), 6604-6611.
      Description:
      Continuous measurements of atmospheric methane (CH4) mole fractions measured by NOAA's Global Greenhouse Gas Reference Network in Barrow, AK (BRW), show strong enhancements above background values when winds come from the land sector from July to Dec...
      File Type:
      Filetype[PDF - 536.86 KB]
    18. The CU 2-D-MAX-DOAS instrument - Part 2: Raman scattering probability measurements and retrieval of aerosol optical properties
      Personal Author:
      Ortega, I.; Coburn, S.; Berg, L. K.; Lantz, K.; Michalsky, J.; Ferrare, R. A.; Hair, J.; Hostetler, C. A.; Volkamer, R.;
      Published Date:
      2016
      Source:
      Atmospheric Measurement Techniques, 9(8), 3893-3910.
      Description:
      The multiannual global mean of aerosol optical depth at 550 nm (AOD(550))over land is similar to 0.19, and that over oceans is similar to 0.13. About 45% of the Earth surface shows AOD550 smaller than 0.1. There is a need for measurement techniques t...
      File Type:
      Filetype[PDF - 3.76 MB]
    19. Regional atmospheric CO2 inversion reveals seasonal and geographic differences in Amazon net biome exchange
      Personal Author:
      Alden, C. B.; Miller, J. B.; Gatti, L. V.; Gloor, M. M.; Guan, K.; Michalak, A. M.; van der Laan-Luijkx, I. T.; Touma, D.; Andrews, A.; Basso, L. S.; Correia, C. S. C.; Domingues, L. G.; Joiner, J.; Krol, M. C.; Lyapustin, A. I.; Peters, W.; Shiga, Y. P.; Thoning, K.; van der Velde, I. R.; van Leeuwen, T. T.; Yadav, V.; Diffenbaugh, N. S.;
      Published Date:
      2016
      Source:
      Global Change Biology, 22(10), 3427-3443.
      Description:
      Understanding tropical rainforest carbon exchange and its response to heat and drought is critical for quantifying the effects of climate change on tropical ecosystems, including global climate-carbon feedbacks. Of particular importance for the globa...
      File Type:
      Filetype[PDF - 1.22 MB]
    20. 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 Date:
      2016
      Source:
      Proceedings of the National Academy of Sciences of the United States of America, 113(35), 9734-9739.
      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]
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