Showing 1 - 7 results of 7 for search '"Northern Hemisphere"', query time: 0.06s Refine Results
  1. 1

    Modelling the growth of atmospheric nitrous oxide using a global hierarchical inversion by Stell, Angharad C, Bertolacci, Michael, Zammit-Mangion, Andrew, Rigby, Matthew, Fraser, Paul J, Harth, Christina M, Krummel, Paul B, Lan, Xin, Manizza, Manfredi, Mühle, Jens, O'Doherty, Simon, Prinn, Ronald G, Weiss, Ray F, Young, Dickon, Ganesan, Anita L

    Published 2023
    “…The prior emissions used in this and other previous work exhibit a seasonal cycle in the extra-tropical Northern Hemisphere that is out of phase with the posterior solution, and there is a substantial zonal redistribution of emissions from the prior to the posterior. …”
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  2. 2

    Sulfuryl fluoride in the global atmosphere by Muhle, Jens, Huang, J., Weiss, R. F., Miller, Benjamin R., Salameh, P. K., Harth, C. M., Fraser, P. J., Porter, L. W., Greally, B. R., O'Doherty, Simon, Simmonds, P. G., Prinn, Ronald G

    Published 2011
    “…The global tropospheric background concentration of SO[subscript 2]F[subscript 2] has increased by 5 ± 1% per year from ∼0.3 ppt (parts per trillion, dry air mol fraction) in 1978 to ∼1.35 ppt in May 2007 in the Southern Hemisphere, and from ∼1.08 ppt in 1999 to ∼1.53 ppt in May 2007 in the Northern Hemisphere. The SO[subscript 2]F[subscript 2] interhemispheric concentration ratio was 1.13 ± 0.02 from 1999 to 2007. …”
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  3. 3

    Historical greenhouse gas concentrations for climate modelling (CMIP6) by Meinshausen, Malte, Vogel, Elisabeth, Nauels, Alexander, Lorbacher, Katja, Meinshausen, Nicolai, Etheridge, David M., Fraser, Paul J., Montzka, Stephen A., Rayner, Peter J., Trudinger, Cathy M., Krummel, Paul B., Beyerle, Urs, Canadell, Josep G., Daniel, John S., Enting, Ian G., Law, Rachel M., Lunder, Chris R., Reimann, Stefan, Rubino, Mauro, Velders, Guus J. M., Vollmer, Martin K., Wang, Ray H. J., Weiss, Ray, O'Doherty, Simon, Prinn, Ronald G

    Published 2018
    “…While the minimum CMIP6 recommendation is to use the global- and annual-mean time series, modelling groups can also choose our monthly and latitudinally resolved concentrations, which imply a stronger radiative forcing in the Northern Hemisphere winter (due to the latitudinal gradient and seasonality).…”
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  4. 4

    Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH by Liang, Qing, Chipperfield, Martyn P., Fleming, Eric L., Abraham, N. Luke, Braesicke, Peter, Burkholder, James B., Daniel, John S., Dhomse, Sandip, Fraser, Paul J., Hardiman, Steven C., Jackman, Charles H., Kinnison, Douglas E., Krummel, Paul B., Montzka, Stephen A., Morgenstern, Olaf, McCulloch, Archie, Mühle, Jens, Newman, Paul A., Orkin, Vladimir L., Pitari, Giovanni, Rigby, Matthew, Rozanov, Eugene, Stenke, Andrea, Tummon, Fiona, Velders, Guus J. M., Visioni, Daniele, Weiss, Ray F., Prinn, Ronald G

    Published 2018
    “…We illustrate that global emissions of long-lived trace gases can be inferred from their observed mixing ratio differences between the Northern Hemisphere (NH) and Southern Hemisphere (SH), given realistic estimates of their NH-SH exchange time, the emission partitioning between the two hemispheres, and the NH versus SH OH abundance ratio. …”
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  5. 5

    Exploring causes of interannual variability in the seasonal cycles of tropospheric nitrous oxide by Nevison, C. D., Dlugokencky, E., Dutton, G. S., Elkins, J. W., Fraser, P. J., Hall, B. D., Krummel, P. B., Langenfelds, R. L., O'Doherty, Simon, Steele, L. P., Weiss, R. F., Prinn, Ronald G

    Published 2011
    “…The detrended monthly data display large interannual variability, which at some sites challenges the concept of a "mean" seasonal cycle. In the Northern Hemisphere, correlations between polar winter lower stratospheric temperature and detrended N[subscript 2]O data, around the month of the seasonal minimum, provide empirical evidence for a stratospheric influence, which varies in strength from year to year and can explain much of the interannual variability in the surface seasonal cycle. …”
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  6. 6

    Recent increases in the atmospheric growth rate and emissions of HFC-23 (CHF₃) and the link to HCFC-22 (CHClF₂) production by Simmonds, Peter G., Rigby, Matthew, McCulloch, Archie, Vollmer, Martin K., Henne, Stephan, Mühle, Jens, O'Doherty, Simon, Manning, Alistair J., Krummel, Paul B., Fraser, Paul J., Young, Dickon, Weiss, Ray F., Salameh, Peter K., Harth, Christina M., Reimann, Stefan, Trudinger, Cathy M., Steele, L. Paul, Wang, Ray H. J., Mitrevski, Blagoj, Etheridge, David M., Ivy, Diane J, Prinn, Ronald G

    Published 2018
    “…High frequency measurements of trifluoromethane (HFC-23, CHF₃), a potent hydrofluorocarbon greenhouse gas, largely emitted to the atmosphere as a by-product of the production of the hydrochlorofluorocarbon HCFC-22 (CHClF₂), at five core stations of the Advanced Global Atmospheric Gases Experiment (AGAGE) network, combined with measurements on firn air, old Northern Hemisphere air samples and Cape Grim Air Archive (CGAA) air samples, are used to explore the current and historic changes in the atmospheric abundance of HFC-23. …”
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  7. 7

    Global emission estimates and radiative impact of C[subscript 4]F[subscript 10], C[subscript 5]F[subscript 12], C[subscript 6]F[subscript 14], C[subscript 7]F[subscript 16] and C[s... by Rigby, Matthew, Baasandorj, M., Burkholder, J. B., Ivy, Diane J, Prinn, Ronald G

    Published 2013
    “…The observations used in the inversion are based on newly measured archived air samples that cover a 39-yr period, from 1973 to 2011, and include 36 Northern Hemispheric and 46 Southern Hemispheric samples. …”
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