The NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division (GMD), and its predecessors, have done atmospheric research in the arctic region for over 35 years. The Point Barrow, Alaska (71.32 N, 156.6 W) Baseline Atmospheric Observatory (BRW) was established in 1973 and has been in continuous operation with two full time NOAA staff since this date. BRW has over 200 active measurements and many of these are cooperative with other agencies, universities and international partners. The Summit, Greenland observatory was first established in 1989 as the GISP2 ice core drilling location. The station has evolved into a world class year-round observatory. NOAA began flask sampling at Summit in 1997 and increased measurements in 2005. NOAA/ESRL has staff at Summit camp for nine months of the year with plans to increase that presence to year-round. The Carbon Cycle & Greenhouse Gases (CCGG) group of GMD operates the global Cooperative Air Sampling Network which includes 6 current (1 future) arctic locations. In addition, NOAA also has other cooperative Arctic sites at Alert and Eureka, Canada; Tiksi and Cherskii, Russia. All of these sites are integral to the global network of atmospheric observatories and are components of the Global Atmospheric Watch (GAW) program, the Arctic Observing Network (AON), and the International Arctic Systems for Observing the Atmosphere (IASOA), among others.