| World-wide contour map of the cosmic-ray dose rates at the ground level calculated by our developed model PARMA coupled with the global relief data ETOPO2v2Cwhich is provided by National Geophysical Data Center, and the cut-off rigidity data of the earth's magnetosphere estimated by MAGNETOCOSMIC.The data are for June 2006, and calculated by EXPACS 2.0. Note that the dose rates DO NOT include the contribution from other natural radiations, and the total background dose rates should be greater than the values shown in this map. You can draw this contour map on Google EarthTM, using EXPACS-V. |