2012 Quarterly Reports

Historical Statistics

Historical Visitor Statistics

Table 1 follows new guidance provided in fiscal year 2009 for counting ARM users for the past 5 years and recalculates statistics provided in previous quarterly reports. For these new computations, only scientific users are officially counted and are determined using the sum of unique scientific users for each of the ARM facility components (i.e., AMF, NSA, SGP, TWP, DMF, and Archive), regardless of the access mechanism used (e.g., research account, physical visit, on- and off-site device accounts).

**The active users for the previous 12 months are counted during the last month of the quarterly reporting period.

Every visitor to the ARM Climate Research Facility must submit a request to visit. From that request, the following statistics in Table 2 have been summarized and the total number of visitors days are recorded.