Evaluation of mean transit time of aerosols from the area of origin to the Arctic with 210 Pb/ 210 Po daily monitoring data

Outdoor Radon Dose Rate in Canada’s Arctic amid Climate Change

“…In these instances, maximal ratios mark periods of year when refrozen soil exceeded intermediate depth. Springtime drops in RnK ratios signal soil gas release revival.The long-distance transportation process (see the 210 Pb traces) is active during winter months and dormant in warm seasons, consistent with earlier findings 32,33.…”

“…These potential sources include 214 B/ 222 Rn present in the atmosphere, soil grains, and pore spaces, as well as precipitations. Moreover, radon transported from distant locations to the Arctic (as depicted by the wind in Figure ) may also contribute. − …”

“…This study utilizes two aerosol radionuclide data sets for monitoring source locality. They are the 210 Pb and 212 Pb air concentration data collected from monitoring stations under the Comprehensive Nuclear-Test-Ban Treaty , and Canadian Radiological Monitoring Network, respectively. The long half-life of 210 Pb makes it valuable for tracing crossing-continent air mass transportation (over several thousand kilometers) into the Arctic.…”

“…Moreover, radon transported from distant locations to the Arctic (as depicted by the wind in Figure 2 ) may also contribute. 30 − 33 …”

Climate change as observed through the IMS radionuclide station in Spitzbergen

“…In general, it is observed that the measured activity concentration of 212 Pb increases with the increase of the local ambient temperature and decreases with the increase of wet precipitation in summer and ground snow coverage in winter 41 . Figs 3 and 4 show that similar dependencies are also noticeable through measurements at RN49.…”