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Reassessing the variability in atmospheric H2 using the two-way nested TM5 model

Pieterse, G. ; Krol, M. C. ; Batenburg, A. M. ; M. Brenninkmeijer, C. A. ; Popa, M. E. ; O'Doherty, S. ; Grant, A. ; Steele, L. P. ; Krummel, P. B. and Langenfelds, R. L. , et al. (2013) In Journal of Geophysical Research: Atmospheres 118(9). p.3764-3780
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 1-2h are asserted for the transport of H2 through the canopies of densely vegetated regions. The global scale variability of... (More)
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 1-2h are asserted for the transport of H2 through the canopies of densely vegetated regions. The global scale variability of H2 and [DH2] 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 +/- 8TgH2. The removal rates of H2 by deposition and photochemical oxidation are estimated at 53 +/- 4 and 23 +/- 2TgH2/yr, resulting in a tropospheric lifetime of 2.2 +/- 0.2year. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
tropospheric budget, Chemical Transport Model, molecular hydrogen, sources and sinks, hydrogen isotopes, dry deposition
in
Journal of Geophysical Research: Atmospheres
volume
118
issue
9
pages
3764 - 3780
publisher
Wiley-Blackwell
external identifiers
  • wos:000319744700023
  • scopus:84881111469
ISSN
2169-8996
DOI
10.1002/jgrd.50204
language
English
LU publication?
no
id
f058f3d4-8018-41a8-b58e-440948c25d6e (old id 4623711)
date added to LUP
2016-04-01 10:53:34
date last changed
2022-01-26 03:29:04
@article{f058f3d4-8018-41a8-b58e-440948c25d6e,
  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 1-2h are asserted for the transport of H2 through the canopies of densely vegetated regions. The global scale variability of H2 and [DH2] 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 +/- 8TgH2. The removal rates of H2 by deposition and photochemical oxidation are estimated at 53 +/- 4 and 23 +/- 2TgH2/yr, resulting in a tropospheric lifetime of 2.2 +/- 0.2year.}},
  author       = {{Pieterse, G. and Krol, M. C. and Batenburg, A. M. and M. Brenninkmeijer, C. A. and Popa, M. E. and O'Doherty, S. and Grant, A. and Steele, L. P. and Krummel, P. B. and Langenfelds, R. L. and Wang, H. J. and Vermeulen, Alex and Schmidt, M. and Yver, C. and Jordan, A. and Engel, A. and Fisher, R. E. and Lowry, D. and Nisbet, E. G. and Reimann, S. and Vollmer, M. K. and Steinbacher, M. and Hammer, S. and Forster, G. and Sturges, W. T. and Rockmann, T.}},
  issn         = {{2169-8996}},
  keywords     = {{tropospheric budget; Chemical Transport Model; molecular hydrogen; sources and sinks; hydrogen isotopes; dry deposition}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{3764--3780}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Journal of Geophysical Research: Atmospheres}},
  title        = {{Reassessing the variability in atmospheric H2 using the two-way nested TM5 model}},
  url          = {{http://dx.doi.org/10.1002/jgrd.50204}},
  doi          = {{10.1002/jgrd.50204}},
  volume       = {{118}},
  year         = {{2013}},
}