A map of radon flux at the Australian land surface

被引：67

作者：

Griffiths, A. D. ^{[1
]}

Zahorowski, W. ^{[1
]}

Element, A. ^{[1
]}

Werczynski, S. ^{[1
]}

机构：

[1] Australian Nucl Sci & Technol Org, Kirrawee Dc, NSW 2232, Australia

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2010年 / 10卷 / 18期

关键词：

ATMOSPHERIC TRANSPORT MODELS; RN-222; FLUX; SOIL; EMANATION; EXHALATION; THORON; SENSITIVITY; DIFFUSION; EMISSIONS; DENSITY;

D O I：

10.5194/acp-10-8969-2010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A time-dependent map of radon-222 flux density at the Australian land surface has been constructed with a spatial resolution of 0.05 degrees and temporal resolution of one month. Radon flux density was calculated from a simple model utilising data from national gamma-ray aerial surveys; modelled soil moisture, available from 1900 in near real-time; and maps of soil properties. The model was calibrated against a data set of accumulation chamber measurements, thereby constraining it with experimental data. A notable application of the map is in atmospheric mixing and transport studies which use radon as a tracer, where it is a clear improvement on the common assumption of uniform radon flux density.

引用

页码：8969 / 8982

页数：14

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