Manchester DMPS and GRIMM measurements, Kuujjuarapik, February-March 2008 for COBRA Campaign

COBRA (impact of COmbined iodine and Bromine Release on the Arctic atmosphere) is a UK IPY (International Polar Year) consortium that aims to investigate the release mechanisms of iodine in the Arctic and the potential combined effects of iodine and bromine on its atmosphere. The team measured reactive inorganic halogens (BrO, IO, OIO, I2), O3, Hg, HOx, HCHO, NOx, VOCs and reactive halocarbons from temporary laboratories located on the eastern shore of Hudson Bay, north of Kuujjuarapik, during February-March 2008. Met balloons and O3 sondes were launched daily. COBRA set up an ice camp and flux chamber experiments ~500 m into the bay to directly measure halogen emissions and ozone deposition, and measured physical, chemical and biological characteristics of the sea-ice (and potentially of frost flowers) at different depths. The project is linked with OOTI, which carried out a simultaneous field experiment at Kuujjuarapik.

COBRA项目（碘和溴联合释放对北极大气影响的联合研究）是由英国国际极地年（IPY）资助的联合体，旨在探究北极碘释放的机制以及碘和溴对其大气的潜在联合效应。研究团队于2008年二月至三月期间，在哈德逊湾东部沿岸，库基乌贾拉皮克以北的临时实验室中，测量了活性无机卤素（BrO、IO、OIO、I2）、臭氧（O3）、汞（Hg）、过氧自由基（HOx）、甲醛（HCHO）、氮氧化物（NOx）、挥发性有机化合物（VOCs）和活性卤代烃。此外，研究团队每天释放气象气球和臭氧探测仪。COBRA项目在湾中搭建了冰上营地和通量室实验，距离湾岸约500米，以直接测量卤素排放和臭氧沉降，并测量了不同深度的海冰（以及可能的霜花）的物理、化学和生物特性。该项目与OOTI项目相连接，OOTI项目在库基乌贾拉皮克同时进行了一项现场实验。