| Issue |
J. Phys. IV France
Volume 107, May 2003
|
|
|---|---|---|
| Page(s) | 1079 - 1082 | |
| DOI | https://doi.org/10.1051/jp4:20030487 | |
J. Phys. IV France 107 (2003) 1079
DOI: 10.1051/jp4:20030487
Time series analysis of atmospheric mercury in Kuujjuarapik/Whapmagoostui (Québec)
L. Poissant and M. PiloteService Météorologique du Canada, Processus Atmosphériques des Toxiques, Environnement Canada, 105 rue McGill, Montréal, Québec H2Y 2E7, Canada
Abstract
Recent mercury depletion events observed in the Arctic have opened the horizon to numerous new aspects on mercury fate and
cycling in the environment. Total Gaseous Mercury and other Atmospheric Mercury speciations are measured in Kuujjuarapik/Whapmagoostui
(Lat.: 55.30°N;
Long.: 77.73°O) along the Hudson Bay (Québec) with Tekran 2537A, 1130 and 1135 units. The former is measured since August
1999 whereas the latter are measured during springtime periods over
the last three years. Mercury Depletion Events are observed at this low latitude région. MDEs are observed between February
and April and are occurring during both the day and nighttime periods.
Typically, MDE in Kuujjuarapik are related to air temperature. During MDEs, a significant speciation conversion from Hg, to
RGM and TPM is operating. However, ratios of TPM to RGM conversion are
variable in time.
© EDP Sciences 2003