We have started air sampling at our lab on Cake Eater Road! Kyle is measuring BrOx and ClOx via a new flow tube method, followed by gas chromatography. Kerri is measuring primarily Br2, Cl2, BrCl, BrO, and HOBr using chemical ionization mass spectrometry. These are gases involved in air-snow/sea ice reactions here in the Arctic. The bromine (Br) and chlorine (Cl) are thought to originate from salts in the seawater that are enriched at the sea ice surface during freezing. The most common salt in seawater is sodium chloride (NaCl), which we also know as the table salt we add to our food at the dinner table! Measuring these gases in the Arctic will help us understand how the atmosphere in the Arctic might change due to loss of sea ice. Soon BROMEX will start, and we will compare our ground-based data to that from satellite retrievals and aircraft-based measurements!
|Kyle setting up his sampling inlet and flow-tube on the roof of the lab|
|Kyle with his flow-tube inlet on the roof of the lab|
|Kyle working on his gas chromatograph|
|Kerri working on the mass spectrometer|
|Mass spectrometer sampling inlet|