 |
| Titel |
Continuous observations of atmospheric ²²²Rn concentration at Lutjewad - analysis of 5 years of data |
| VerfasserIn |
Swagath Navin Manohar, Huilin Chen, Harro A. J. Meijer, R. E. M. Neubert, Sander van der Laan |
| Konferenz |
EGU General Assembly 2013
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076718
|
|
|
|
|
|
| Zusammenfassung |
| Accurate representation of the turbulent physics and dynamical processes in the atmospheric
boundary layer (ABL) and also the influence of meteorological conditions on the atmospheric
compounds pose a huge challenge on the modeling community as many models fail to
represent or even take into account of these processes properly. Continuous atmospheric
observations of a radioactive tracer like radon (222Rn) combined with observed
meteorological parameters can provide much valuable information about the large diurnal and
seasonal variability of the ABL and the meteorological effects associated with it and also
can be used for evaluation of transport schemes in regional and global circulation
models.
We report on the results of five years of radon time series at our atmospheric
measurement station Lutjewad in The Netherlands (6° 21 E, 53° 21 N, 1 m asl, air intake at
60 m above ground). Two major periodical variation in atmospheric 222Rn concentration will
be discussed in detail (i) seasonal variation with a maximum in late autumn and minimum in
spring: (ii) diurnal variation, that is strongest during summer and almost non-existent during
winter. In addition, the influence of different observed meteorological parameters (such as
atmospheric pressure, humidity, temperature, wind direction and velocity) will
also be discussed. Lastly, first results of model simulations of atmospheric 222Rn
concentrations for one year using the Hybrid Single Particle Lagrangian Integrated
Trajectory Model (HYSPLIT) and a newly created 222Rn flux map will be presented. |
|
|
|
|
|
|