Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report October 1 - December 31, 2005 Page: 4 of 6
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October 1 - December 31, 2005, ARM 06-007
Table 1. Operational Statistics for the Fixed ACRF Sites for the Period October 1 -
December 31, 2005
Hours of Operation Data Availability
SITE OPSMAX ACTUAL VARIANCE GOAL ACTUAL
NSA 1,987.20 2,053.44 -0.033 0.90 0.93
SGP 2,097.60 2,141.76 -0.021 0.95 0.97
TWP 1,876.80 2,053.44 -0.094 0.85 0.93
Site Average 1,987.20 2,082.88 -0.049 0.90 0.94
at all the sites, especially the TWP in preparation for the Tropical Warm Pool-International
Cloud Experiment in January and February 2006. In addition, we have been able to calculate
the ratio of the actual number of data records received daily at the Archive to the expected
number of data records for two instruments (the microwave radiometer and the radiosonde)
with varying daily data records. Theses instruments have a history of high reliability and,
until now, have not been included the calculation of operational statistics.
2. Site Visit Requests, Archive Accounts, and Research Computer Accounts
Description. The Site Access Request System is a web-based database used to track visitors to
the fixed sites, all of which have facilities that can be visited. The NSA locale has the Barrow
and Atqasuk sites. The SGP site has a Central Facility, 23 extended facilities, 4 boundary
facilities, and 3 intermediate facilities. The TWP locale has the Manus, Nauru, and Darwin
sites. The AMF currently represents one facility. In addition, users who require data more
timely than that provided by the ACRF Archive can request an account on the local site data
system. The eight research computers are located at the Barrow and Atqasuk facilities; the SGP
Central Facility; the TWP Manus, Nauru, and Darwin sites; the DMF at PNNL; and the AMF
(currently in Point Reyes, California). This report provides the cumulative numbers of visitors
and user accounts by site for the period January1, 2005 - December 31, 2005.
The U.S. Department of Energy requires national user facilities to report facility use by total
visitor days-broken down by institution type, gender, race, citizenship, visitor role, visit
purpose, and facility-for actual visitors and for active user research computer accounts. During
this reporting period, the ACRF Archive did not collect data on user characteristics in this way.
Work is under way to collect and report these data.
Research computer accounts are counted in the same manner as for the ACRF Archive accounts:
an individual is counted as only one unique user per site, even though he or she opens and closes
an account several times to obtain different data at one or more sites. However, site visitors are
counted each time they visit, because many visitors participate in multiple, unrelated experiments
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Sisterson, D. L. Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report October 1 - December 31, 2005, report, December 31, 2005; (digital.library.unt.edu/ark:/67531/metadc898495/m1/4/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.