R W Portmann
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Explore the profile of R W Portmann including associated specialties, affiliations and a list of published articles.
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9
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61
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Recent Articles
1.
Richardson T, Forster P, Smith C, Maycock A, Wood T, Andrews T, et al.
J Geophys Res Atmos
. 2020 Feb;
124(23):12824-12844.
PMID: 32025453
Quantifying the efficacy of different climate forcings is important for understanding the real-world climate sensitivity. This study presents a systematic multimodel analysis of different climate driver efficacies using simulations from...
2.
Larson E, Portmann R
Sci Rep
. 2019 Nov;
9(1):16538.
PMID: 31719591
The 2016 Paris agreement set a global mean surface temperature (GMST) goal of not more than 2 degrees Celsius above preindustrial. This is an ambitious goal that will require substantial...
3.
Dessler A, Ye H, Wang T, Schoeberl M, Oman L, Douglass A, et al.
Geophys Res Lett
. 2018 Mar;
43(5):2323-2329.
PMID: 29551841
Climate models predict that tropical lower-stratospheric humidity will increase as the climate warms. We examine this trend in two state-of-the-art chemistry-climate models. Under high greenhouse gas emissions scenarios, the stratospheric...
4.
Portmann R, Daniel J, Ravishankara A
Philos Trans R Soc Lond B Biol Sci
. 2012 Mar;
367(1593):1256-64.
PMID: 22451111
The effects of anthropogenic emissions of nitrous oxide (N(2)O), carbon dioxide (CO(2)), methane (CH(4)) and the halocarbons on stratospheric ozone (O(3)) over the twentieth and twenty-first centuries are isolated using...
5.
Papadimitriou V, Portmann R, Fahey D, Muhle J, Weiss R, Burkholder J
J Phys Chem A
. 2008 Dec;
112(49):12657-66.
PMID: 19053541
In this work, potential atmospheric loss processes for SO2F2, a commercially used biocide (fumigant), have been studied and its global warming potential calculated. Rate coefficients for the gas-phase reactions OH...
6.
Papadimitriou V, Talukdar R, Portmann R, Ravishankara A, Burkholder J
Phys Chem Chem Phys
. 2008 Jan;
10(6):808-20.
PMID: 18231683
Rate coefficients over the temperature range 206-380 K are reported for the gas-phase reaction of OH radicals with 2,3,3,3-tetrafluoropropene (CF(3)CF=CH(2)), k(1)(T), and 1,2,3,3,3-pentafluoropropene ((Z)-CF(3)CF=CHF), k(2)(T), which are major components in...
7.
Rajakumar B, Portmann R, Burkholder J, Ravishankara A
J Phys Chem A
. 2006 May;
110(21):6724-31.
PMID: 16722689
Rate coefficients for reaction of the hydroxyl radical (OH) with three hydrofluorocarbons (HFCs) CF3CH2CH3, HFC-263fb, (k1); CF3CHFCH2F, HFC-245eb, (k2); and CHF2CHFCHF2, HFC-245ea, (k3); which are suggested as potential substitutes to...
8.
Rajakumar B, Burkholder J, Portmann R, Ravishankara A
Phys Chem Chem Phys
. 2005 Jun;
7(12):2498-505.
PMID: 15962035
The rate coefficient for the reaction OH + CFH2CH2OH --> products (k1) between 238 and 355 K was measured using the pulsed laser photolysis-laser induced fluorescence (PLP-LIF) technique to be...
9.
Melamed M, Solomon S, Daniel J, Langford A, Portmann R, Ryerson T, et al.
J Environ Monit
. 2003 Mar;
5(1):29-34.
PMID: 12619753
Accurate measurements of nitrogen dioxide (NO2), a key trace gas in the formation and destruction of tropospheric ozone, are important in studies of urban pollution. Nitrogen dioxide column abundances were...