Advanced atmospheric 14C monitoring around the Paks Nuclear Power Plant, Hungary

14CO2 ACTIVITY IN AIR SAMPLES AND DILUTION FACTOR EVALUATION OF KAKRAPAR GUJARAT SITE, INDIA

“…When the plume direction is towards NNE sector, then predicted 14 CO 2 activity calculated using GPM was 0.001-0.0025 Bq m -3 and is lower than the measured activity ≤0.04-0.13 Bq m -3 . Dias et al (2009) and Varga et al (2020) reported that the dilution and dispersion of 14 CO 2 do not follow GPM. The main reason behind this is CO 2 density is larger than that of air density (Molnár et al 2007) and GPM equation does not account density explicitly.…”

SPATIAL DISTRIBUTION OF FOSSIL FUEL CO2 IN MEGACITY DELHI DETERMINED USING RADIOCARBON MEASUREMENTS IN PEEPAL (FICUS RELIGIOSA) TREE LEAVES

“…There are two nuclear reactors at the distance of 150 km and 580 km from Delhi and both are pressurized heavy water reactors (PHWR). Pressurized water reactors emit 14 C dominantly in the form of 14 CH 4 (Varga et al 2020b(Varga et al , 2021. Both of these reactors are also not in the upwind direction of Delhi and this correction can also be ignored.…”

14C-AMS measurements in modern tree rings to trace local fossil fuel-derived CO2 in the greater Xi'an area, China

“…With bioindicators, the responses of organisms to changes in the environment are measured, basically referring to the accumulation of pollutants that depend on the species and its sensitivity (Michel Herrera 2016). Mosses, lichens, plankton, animals, herbs, annual plants, shrubs, and trees, among others, have been used as bioindicators for monitoring pollution (Figueira et al 2002, Varga et al 2020, Scerbo et al 1999, Parmar et al 2016, Sawidis et al 2011. In the case of trees, various components -leaves, roots, fruits, bark, or wood -have acted as indicators of contamination (Karmakar et al 2021, Terekhina and Ufimtseva 2020, Varga et al 2020, Burken et al 2011, Madejo et al 2006.…”

“…Another option to detect the Suess effect is to measure the 14 C on air at monitoring stations in cities or industrial areas and compare it, year by year, with 14 C of the closest data measured at "clean air" stations that have recorded this information during the last 50 to 67 years in various Earth´s sites. This option is much more expensive to the point that it only exists for a few First World cities (Varga et al 2020, Miller et al 2020, Zhao et al 2021.…”