globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.502042013
Reassessing the variability in atmospheric H2 using the two-way nested TM5 model
Author: Pieterse G.; Krol M.C.; Batenburg A.M.; Brenninkmeijer C.A.M.; Popa M.E.; O'Doherty S.; Grant A.; Steele L.P.; Krummel P.B.; Langenfelds R.L.; Wang H.J.; Vermeulen A.T.; Schmidt M.; Yver C.; Jordan A.; Engel A.; Fisher R.E.; Lowry D.; Nisbet E.G.; Reimann S.; Vollmer M.K.; Steinbacher M.; Hammer S.; Forster G.; Sturges W.T.; Röckmann T.
Source Publication: Journal of Geophysical Research Atmospheres
ISSN: 21698996
Publishing Year: 2013
Volume: 118, Issue:9
pages begin: 3764
pages end: 3780
Language: 英语
Scopus Keyword: Troposphere ; Weather forecasting ; Atmospheric budget ; Deposition fluxes ; European centre for medium-range weather forecasts ; High-resolution models ; Photochemical oxidation ; Southern Hemisphere ; Tropospheric lifetime ; Vertical transports ; Deposition ; atmospheric chemistry ; atmospheric modeling ; calibration ; dry deposition ; hydrogen ; photooxidation ; rainforest ; Southern Hemisphere ; troposphere ; vegetation structure ; Georgia ; Savannah ; United States
English Abstract: This work reassesses the global atmospheric budget of H2 with the TM5 model. The recent adjustment of the calibration scale for H2 translates into a change in the tropospheric burden. Furthermore, the ECMWF Reanalysis-Interim (ERA-Interim) data from the European Centre for Medium-Range Weather Forecasts (ECMWF) used in this study show slower vertical transport than the operational data used before. Consequently, more H2 is removed by deposition. The deposition parametrization is updated because significant deposition fluxes for snow, water, and vegetation surfaces were calculated in our previous study. Timescales of 1-2 h are asserted for the transport of H2 through the canopies of densely vegetated regions. The global scale variability of H2 and ?D[H2] is well represented by the updated model. H2 is slightly overestimated in the Southern Hemisphere because too little H2 is removed by dry deposition to rainforests and savannahs. The variability in H2 over Europe is further investigated using a high-resolution model subdomain. It is shown that discrepancies between the model and the observations are mainly caused by the finite model resolution. The tropospheric burden is estimated at 165 ± 8 Tg H2. The removal rates of H2 by deposition and photochemical oxidation are estimated at 53 ± 4 and 23 ± 2 Tg H2/yr, resulting in a tropospheric lifetime of 2.2 ± 0.2 year. © 2013. American Geophysical Union. All Rights Reserved.
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Document Type: 期刊论文
Appears in Collections:影响、适应和脆弱性

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Affiliation: Institute for Marine and Atmospheric Research Utrecht (IMAU), Princetonplein 5, 3584 CC, Utrecht, Netherlands; Department of Meteorology and Air Quality, Wageningen University, Wageningen, Netherlands; Max-Planck-Institut für Chemie, Air Chemistry Division, Mainz, Germany; Department of Air Quality and Climate Research, Energy Research Centre of the Netherlands (ECN), Petten, Netherlands; School of Chemistry, University of Bristol, Bristol, United Kingdom; Centre for Australian Weather and Climate Research, CSIRO Marine and Atmospheric Research, Aspendale, VIC, Australia; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Gif-sur-Yvette, France; Max-Planck Institut für Biogeochemie, Jena, Germany; Institut für Meteorologie und Geophysik, Goethe-Universität Frankfurt, Frankfurt, Germany; Department of Earth Sciences, Royal Holloway, University of London, Egham, United Kingdom; Empa, Swiss Federal Institute for Materials Science and Technology, Laboratory for Air Pollution/Environmental Technology, Duebendorf, Switzerland; Institut für Umweltphysik, Heidelberg Universität, Heidelberg, Germany; School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom

Recommended Citation:
Pieterse G.,Krol M.C.,Batenburg A.M.,et al. Reassessing the variability in atmospheric H2 using the two-way nested TM5 model[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(9)
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