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Title: Observationally derived rise in methane surface forcing mediated by water vapour trends

Journal Article · · Nature Geoscience
ORCiD logo [1]; ORCiD logo [2];  [1];  [1]; ORCiD logo [3];  [4];  [1];  [5];  [6];  [7];  [8];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. National Oceanic and Atmospheric Administration Earth Systems Research Lab, Boulder, CO (United States)
  4. Univ. of Wisconsin, Madison, WI (United States)
  5. Univ. of Colorado, Boulder, CO (United States)
  6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Atmospheric and Environmental Research, Lexington, MA (United States)
  8. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Atmospheric methane (CH4) mixing ratios exhibited a plateau between 1995 and 2006 and have subsequently been increasing. While there are a number of competing explanations for the temporal evolution of this greenhouse gas, these prominent features in the temporal trajectory of atmospheric CH4 are expected to perturb the surface energy balance through radiative forcing, largely due to the infrared radiative absorption features of CH4. However, to date this has been determined strictly through radiative transfer calculations. Here, we present a quantified observation of the time series of clear-sky radiative forcing by CH4 at the surface from 2002 to 2012 at a single site derived from spectroscopic measurements along with line-by-line calculations using ancillary data. There was no significant trend in CH4 forcing between 2002 and 2006, but since then, the trend in forcing was 0.026 ± 0.006 (99.7% CI)W m2yr-1. The seasonal-cycle amplitude and secular trends in observed forcing are influenced by a corresponding seasonal cycle and trend in atmospheric CH4. However, we find that we must account for the overlapping absorption effects of atmospheric water vapour (H2O) and CH4 to explain the observations fully. Thus, the determination of CH4 radiative forcing requires accurate observations of both the spatiotemporal distribution of CH4 and the vertically resolved trends in H2O.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; AC52-07NA27344
OSTI ID:
1532308
Alternate ID(s):
OSTI ID: 1458639; OSTI ID: 1490275
Report Number(s):
LLNL-JRNL-741331; ark:/13030/qt5gc4b6cg
Journal Information:
Nature Geoscience, Vol. 11, Issue 4; ISSN 1752-0894
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (64)

Atmospheric Emitted Radiance Interferometer. Part II: Instrument Performance journal December 2004
Dry Bias and Variability in Vaisala RS80-H Radiosondes: The ARM Experience journal January 2003
Methane Leaks from North American Natural Gas Systems journal February 2014
The HITRAN 2008 molecular spectroscopic database journal June 2009
Comparison of Spectrally Resolved Outgoing Longwave Radiation over the Tropical Pacific between 1970 and 2003 Using IRIS, IMG, and AIRS journal August 2007
MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications journal July 2011
An update on Earth's energy balance in light of the latest global observations journal September 2012
Dimensionality Reduction and Visualization in Principal Component Analysis journal July 2008
The sensitivity of radiative transfer calculations to the changes in the HITRAN database from 1982 to 2004 journal April 2008
Impacts of updated spectroscopy on thermal infrared retrievals of methane evaluated with HIPPO data journal January 2015
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
  • McCoy, Renata; Xie, Shaocheng
  • Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US) https://doi.org/10.5439/1039931
dataset January 2012
Global atmospheric methane: budget, changes and dangers
  • Dlugokencky, Edward J.; Nisbet, Euan G.; Fisher, Rebecca
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 369, Issue 1943 https://doi.org/10.1098/rsta.2010.0341
journal May 2011
ARM’s Progress on Improving Atmospheric Broadband Radiative Fluxes and Heating Rates journal April 2016
ARM: Atmospheric Emitted Radiance Interferometer (AERI): channel 1 data
  • Hackel, Denny; Ermold, Brian; Gaustad, Krista
  • Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US); https://doi.org/10.5439/1025143
dataset January 1994
CLOUDS AND MORE: ARM Climate Modeling Best Estimate Data: A New Data Product for Climate Studies journal January 2010
A New Air–Sea Interaction Gridded Dataset from ICOADS With Uncertainty Estimates journal May 2009
Observational determination of surface radiative forcing by CO2 from 2000 to 2010 journal February 2015
Noise Reduction of Atmospheric Emitted Radiance Interferometer (AERI) Observations Using Principal Component Analysis journal September 2006
Ambiguity in the causes for decadal trends in atmospheric methane and hydroxyl journal April 2017
Global atmospheric downward longwave radiation over land surface under all-sky conditions from 1973 to 2008 journal January 2009
Corrections of Humidity Measurement Errors from the Vaisala RS80 Radiosonde—Application to TOGA COARE Data journal July 2002
How Much More Rain Will Global Warming Bring? journal July 2007
Factors affecting the detection of trends: Statistical considerations and applications to environmental data
  • Weatherhead, Elizabeth C.; Reinsel, Gregory C.; Tiao, George C.
  • Journal of Geophysical Research: Atmospheres, Vol. 103, Issue D14 https://doi.org/10.1029/98JD00995
journal July 1998
Increases in greenhouse forcing inferred from the outgoing longwave radiation spectra of the Earth in 1970 and 1997 journal March 2001
The global energy balance from a surface perspective journal November 2012
The WSR-88D Rainfall Algorithm journal June 1998
Development and recent evaluation of the MT_CKD model of continuum absorption
  • Mlawer, Eli J.; Payne, Vivienne H.; Moncet, Jean-Luc
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 370, Issue 1968 https://doi.org/10.1098/rsta.2011.0295
journal June 2012
Gaussian Quadrature and Its Application to Infrared Radiation journal March 2000
HadISDH: an updateable land surface specific humidity product for climate monitoring journal January 2013
A multi-year record of airborne CO 2 observations in the US Southern Great Plains journal January 2013
Bayes Factors journal June 1995
Anthropogenic emissions of methane in the United States journal November 2013
CarbonTracker-CH 4 : an assimilation system for estimating emissions of atmospheric methane journal January 2014
Reduced methane growth rate explained by decreased Northern Hemisphere microbial sources journal August 2011
Recent decline in the global land evapotranspiration trend due to limited moisture supply journal October 2010
A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4 journal March 2016
Atmospheric carbon dioxide at Mauna Loa Observatory: 2. Analysis of the NOAA GMCC data, 1974-1985 journal June 1989
Long-Term Trends in Downwelling Spectral Infrared Radiance over the U.S. Southern Great Plains journal September 2011
Methane line parameters in the HITRAN2012 database journal November 2013
Measurements of H2O broadening coefficients of infrared methane lines journal April 2016
Recent Climatology, Variability, and Trends in Global Surface Humidity journal August 2006
An atmospheric perspective on North American carbon dioxide exchange: CarbonTracker journal November 2007
Contribution of oil and natural gas production to renewed increase in atmospheric methane (2007–2014): top–down estimate from ethane and methane column observations journal January 2016
Atmospheric Emitted Radiance Interferometer. Part I: Instrument Design journal December 2004
The effects of different HITRAN versions on calculated long-wave radiation and uncertainty evaluation journal June 2012
Atmospheric radiative transfer modeling: a summary of the AER codes journal March 2005
Recent decreases in fossil-fuel emissions of ethane and methane derived from firn air journal August 2011
Three decades of global methane sources and sinks journal September 2013
The NOAA nitrous oxide standard scale for atmospheric observations journal January 2007
Methane on the Rise--Again journal January 2014
Overexplaining or underexplaining methane’s role in climate change journal May 2017
Role of atmospheric oxidation in recent methane growth journal April 2017
The HITRAN2012 molecular spectroscopic database journal November 2013
New estimates of radiative forcing due to well mixed greenhouse gases journal July 1998
Atmospheric CH 4 in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements : CH journal July 2013
Inhomogeneous radiative forcing of homogeneous greenhouse gases: Inhomogeneous Forcing of Homogeneous Gas journal March 2016
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
  • McCoy, Renata; Xie, Shaocheng
  • Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US) https://doi.org/10.5439/1035356
dataset January 2011
Time Series Analysis and its Applications journal April 2001
The global energy balance from a surface perspective text January 2013
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
  • McCoy, Renata; Xie, Shaocheng
  • Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US) https://doi.org/10.5439/1111533
dataset January 2013
Markov Chain Monte Carlo in Practice journal August 1997
Bayes factors journal November 2006
Three decades of global methane sources and sinks text January 2013
Contribution of oil and natural gas production to renewed increase of atmospheric methane (2007-2014): top-down estimate from ethane and methane column observations text January 2015

Cited By (4)

Effect of Drought-Induced Salinization on Wetland Methane Emissions, Gross Ecosystem Productivity, and Their Interactions journal August 2019
On the Causes and Consequences of Recent Trends in Atmospheric Methane journal August 2019
The effect of deuteration on the optical spectra of compressed methane journal April 2019
Evaluation of CESM1 (WACCM) free-running and specified dynamics atmospheric composition simulations using global multispecies satellite data records journal January 2019

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