Simulation of radon-222 with the GEOS-Chem global model: Emissions, seasonality, and convective transport
Creators
- 1. National Institute of Aerospace
- 2. NASA Langley Research Center
- 3. Australian Nuclear Science and Technology Organization
- 4. Jeju National University
- 5. Pacific Northwest National Laboratory
- 6. NASA Headquarters
- 7. Harvard University
Description
Data repository for paper:
"Simulation of radon-222 with the GEOS-Chem global model:
Emissions, seasonality, and convective transport" by
Bo Zhang, Hongyu Liu, James H. Crawford, Gao Chen,
T. Duncan Fairlie, Scott Chambers, Chang-Hee Kang,
Alastair G. Williams, Kai Zhang, David B. Considine,
Daniel J. Jacob, Melissa P. Sulprizio,
and Robert M. Yantosca, submitted to Atmos. Chem. Phys., July 2020
Created by Bo Zhang (bzhang@nianet.org), July 2020
-> Data
-> Rn_surface
Contains site measurement files
-> Please refer to Zhang et al. (2011) for most of the surface
site measurements.
-> MLO_radon.xlsx
Long-term Rn-222 measurements at Mauna Loa.
-> Gosan_2001-2010.xlsx
Long-term Rn-222 measurements at Gosan.
-> Rn_profile
Contains no data here. Please refer to Liu et al. (1984),
Kritz et al. (1998), Zaucker et al. (1996), and
Williams et al. (2011) for the four Rn-222 profile datasets.
-> Model_modified
-> Code_1101f_Rn_paper
The folder contains a complete code directory of GEOS-Chem v11-01f.
-> hcox_gc_RnPbBe_mod.F90.ZKCHA120NASWred
This file replaces HEMCO/Extensions/hcox_gc_RnPbBe_mod.F90
under GEOS-Chem version 11.01f code directory to read the
updated emission files (Rn_emis_ZKCHA120_NASWred). Search 'bz' in
the file for modifications.
-> Rn_emis_ZKCHA120_NASWred: updated global Rn-222 emission fluxes.
-> ZKC_EMIS_ARR_ATOM_2X25_MONTHLY.sav
IDL save-file with saved monthly mean Rn-222 emission fluxes.
(gridded 2x2.5 array ZKC_EMIS_ARR_ATOM_2X25_MONTHLY)
Unit is atom Rn-222 per cm2 per second.
-> Rn_emis_ZKCHA120_NASWred_2x25_std01-12
Text files need to be put under GEOS-Chem run directory.
Each monthly file contains a single column array.
The data are placed in a longitude and latitude sequence
starting from (180W, 89.5S) to (178W, 89.5S) .... and
until (177.5E, 89.5N).
The entire folder needs to be placed under GEOS-Chem run directory.
-> For the other three emission scenarios used in the paper
please refer to Jacob et al. (1997), Schery and Wasiolek (1998),
and Zhang et al. (2011).
-> Model_output
-> tracerinfo.dat, diaginfo.dat: GEOS-Chem dat files needed for IDL-GAMAP
-> rpbbe2_1101f_merra_2013_JA97.bpch: model output with emission JA97.
-> rpbbe2_1101f_merra_2013_SW98.bpch: model output with emission SW98.
-> rpbbe2_1101f_merra_2013_ZK11.bpch: model output with emission ZK11.
-> rpbbe2_1101f_merra_2013_ZKCHA120NASWred.bpch: model output with the
updated emission in this work.
Reference:
Jacob, D. J., Prather, M. J., Rasch, P. J., Shia, R. L.,
Balkanski, Y. J., Beagley, S. R., ... & Chipperfield, M. P.
(1997). Evaluation and intercomparison of global atmospheric
transport models using 222Rn and other short‐lived tracers.
Journal of Geophysical Research: Atmospheres, 102(D5), 5953-5970.
Kritz, M. A., Rosner, S. W. and Stockwell, D. Z.: Validation of
an off-line three-dimensional chemical transport model
using observed radon profiles: 1. Observations, J. Geophys.
Res, 103, 8425–8432, 1998.
Liu, S. C., Mcafee, J. R. and Cicerone, R. J.: Radon 222 and
Tropospheric Vertical Transport, J. Geophys. Res.,
89(20), 7291–7297, doi:10.1029/JD089iD05p07291, 1984.
Schery, S. D. and Wasiolek, M. A.: Modeling radon flux
from the Earth’s surface, in: Radon and Thorn in the
Human Environment, in: Proceedings of the 7th Tohwa
University International Symposium, edited by: Katase,
A. and Shimo, M., World Scientific Publishing Co. Pre.
Ltd., Singapore, 73–78, 1998.
Williams, A. G., Zahorowski, W., Chambers, S., Griffiths,
A., Hacker, J. M., Element, A. and Werczynski, S.:
The vertical distribution of radon in clear and cloudy
daytime terrestrial boundary layers, J. Atmos. Sci., 68(1),
155–174, doi:10.1175/2010JAS3576.1, 2011.
Zaucker, F., PH, and D., U, W., Berkowitz, C., nd Kromer,
B. and Broecker, W. S.: Atmospheric 222Rn measurements
during the 1993 NARE Intensive., J. Geophys. Res., 101,
29149–29164, 1996.
Zhang, K., Feichter, J., Kazil, J., Wan, H., Zhuo, W.,
Griffiths, A., ... & Yver, C. (2011). Radon activity
in the lower troposphere and its impact on ionization
rate: a global estimate using different radon emissions.
Atmospheric Chemistry and Physics, 11(15), 7817-7838.
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