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Transport of 222Rn using the regional model REMO : a detailed comparison with measurements over Europe

Chevillard, A.; Ciais, P.; Karstens, Ute; Heimann, M.; Schmidt, M.; Levin, I.; Jacob, D.; Podzun, R.; Kazan, V. and Sartorius, H., et al. (2002) In Tellus. Series B: Chemical and Physical Meteorology 54(5). p.850-871
Abstract
The 222Rn concentration simulated by the regional atmospheric modelREMOover Europe and western

Siberia is compared to in-situ records in Europe, and discussed in the context of site effects for stations

that are also part of a CO2 observing network. The REMO model has a limited spatial domain, forced

at its lateral boundaries with meteorological fields of the European Centre for Medium-RangeWeather

Forecasts and with tracer concentrations issued from the TM3 global transport model. The modelled

222Rn field is compared to measurements at six stations: two coastal ones (Atlantic Ocean and Baltic

Sea), two low-elevation sites in plains, one mountain station and one high-altitude station.... (More)
The 222Rn concentration simulated by the regional atmospheric modelREMOover Europe and western

Siberia is compared to in-situ records in Europe, and discussed in the context of site effects for stations

that are also part of a CO2 observing network. The REMO model has a limited spatial domain, forced

at its lateral boundaries with meteorological fields of the European Centre for Medium-RangeWeather

Forecasts and with tracer concentrations issued from the TM3 global transport model. The modelled

222Rn field is compared to measurements at six stations: two coastal ones (Atlantic Ocean and Baltic

Sea), two low-elevation sites in plains, one mountain station and one high-altitude station. We show

that the synoptic and diurnal 222Rn variability as simulated by REMO (55 km by 55 km) is realistic.

In some cases REMO performs better than TM3, which is of coarser resolution, but this is not always

true. At Mace Head, a station located near the western edge of the REMO domain, we show that

the 222Rn “baseline” concentration is strongly influenced by boundary conditions, reflecting 222Rn

transport from North America across the Atlantic Ocean. At Schauinsland, a mountain station in southwestern

Germany, even though the spatial resolution ofREMOis not fine enough to reproduce transport

processes induced by local topography, a fairly good agreement between model and measurements can

be obtained, provided that one can determine from comparison of observed and modelled diurnal

temperature changes which layer of the model is suitable for comparison with the data. Finally, the

implications of modelling 222Rn are discussed here in the broader context of interpreting site effects

that may also affect CO2 continental observations in Europe. (Less)
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Tellus. Series B: Chemical and Physical Meteorology
volume
54
issue
5
pages
850 - 871
publisher
Taylor & Francis
external identifiers
  • scopus:20244361905
ISSN
0280-6509
DOI
10.1034/j.1600-0889.2002.01339.x
language
English
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@article{a350784a-28f6-40cb-8929-537e98a3d16f,
  abstract     = {The 222Rn concentration simulated by the regional atmospheric modelREMOover Europe and western<br/><br>
Siberia is compared to in-situ records in Europe, and discussed in the context of site effects for stations<br/><br>
that are also part of a CO2 observing network. The REMO model has a limited spatial domain, forced<br/><br>
at its lateral boundaries with meteorological fields of the European Centre for Medium-RangeWeather<br/><br>
Forecasts and with tracer concentrations issued from the TM3 global transport model. The modelled<br/><br>
222Rn field is compared to measurements at six stations: two coastal ones (Atlantic Ocean and Baltic<br/><br>
Sea), two low-elevation sites in plains, one mountain station and one high-altitude station. We show<br/><br>
that the synoptic and diurnal 222Rn variability as simulated by REMO (55 km by 55 km) is realistic.<br/><br>
In some cases REMO performs better than TM3, which is of coarser resolution, but this is not always<br/><br>
true. At Mace Head, a station located near the western edge of the REMO domain, we show that<br/><br>
the 222Rn “baseline” concentration is strongly influenced by boundary conditions, reflecting 222Rn<br/><br>
transport from North America across the Atlantic Ocean. At Schauinsland, a mountain station in southwestern<br/><br>
Germany, even though the spatial resolution ofREMOis not fine enough to reproduce transport<br/><br>
processes induced by local topography, a fairly good agreement between model and measurements can<br/><br>
be obtained, provided that one can determine from comparison of observed and modelled diurnal<br/><br>
temperature changes which layer of the model is suitable for comparison with the data. Finally, the<br/><br>
implications of modelling 222Rn are discussed here in the broader context of interpreting site effects<br/><br>
that may also affect CO2 continental observations in Europe.},
  author       = {Chevillard, A. and Ciais, P. and Karstens, Ute and Heimann, M. and Schmidt, M. and Levin, I. and Jacob, D. and Podzun, R. and Kazan, V. and Sartorius, H. and Weingartner, E.},
  issn         = {0280-6509},
  language     = {eng},
  number       = {5},
  pages        = {850--871},
  publisher    = {Taylor & Francis},
  series       = {Tellus. Series B: Chemical and Physical Meteorology},
  title        = {Transport of 222Rn using the regional model REMO : a detailed comparison with measurements over Europe},
  url          = {http://dx.doi.org/10.1034/j.1600-0889.2002.01339.x},
  volume       = {54},
  year         = {2002},
}