uid=BNZ,o=lter,dc=ecoinformatics,dc=org all public read knb-lter-bnz.182.10 Jamie Hollingsworth BNZ LTER Site Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks School of Agriculture and Land Resources Management P.O. Box 756780 Fairbanks AK 99775 United States

(907) 474-7470 (907) 474-6251 jhollingsworth@alaska.edu Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu Brian Charlton Research Technician

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks School of Agriculture and Land Resources Management P.O. Box 756780 Fairbanks AK 99775-6780 United States

(907) 474-5104 (907) 474-6251 Associated investigator John Yarie Professor of Silviculture

Forest Soils Laboratory; Department of Forest Sciences; SNRAS; University of Alaska Fairbanks Fairbanks AK 99775-7200 United States

(907) 474-5650 (907) 474-6184 Associated investigator 2005-11-05 In 1993, Eppley total UV radiometers (TUVR) were installed at each climate station on 21 April at LTER1 and 5 May at LTER2. These radiometers consist of a Weston selenium barrier-layer photoelectric cell with a sealed-in quartz window, a bandpass filter to restrict the wavelength response of the photcell to the designed range (295-385 nm), and a diffusing disc of Virgin Teflon to reduce the light intensity at the filtered photocell and also to improve the adherence of the instrument to the Lambert cosine law. The disc is nearly uniform diffusing over the wavelength range of interest, as well as geometrically within the system. The terminals of the photocell are connected through a precision resistor and the signal measured as a voltage drop across the resistor. Winter measurements may be inaccurate due to snow cover. ultraviolet UV Climate

While metadata will be freely available to those requesting it, the data manager will assure that any restrictions on access to data sets in the database will be enforced. Data will not be released without proper permission first being obtained from the investigator who generated the data.

Researchers should receive adequate acknowledgment for the use of their data by others and should be provided with copies of publications using their data. Users of data from the data base must be aware that data is not to be sold or redistributed.

It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set.

http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=182 Site information unavailable -148.31389 -148.2549125 64.74167 64.69889576 1988-06-01 2008-08-12

Ongoing

Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu Bonanza Creek LTER

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 Bonanza Creek LTER

UV is measured every 5 minutes and reported as an hourly average.

geoReference 1988-06-01 2008-08-12

hourly

bcef_uv_100.txt bcef_uv_100.txt 1 \n \n column \t http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/ascii/script_outputs/bcef_uv_100.txt site site Site Id string Site Id date date date of reading string YYYY-MM-DD hour hour hour of reading integer hhhh measurment measurment measurment type string measurment type value value UV value float watts-m2 real unit unit Unit of value for UV string Unit of value for UV flag flag data quality flag string data quality flag bcef_uv_200.txt bcef_uv_200.txt 1 \n \n column \t http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/ascii/script_outputs/bcef_uv_100.txt site site Site Id string Site Id date date date of reading string YYYY-MM-DD hour hour hour of reading integer hhhh measurment measurment measurment type string measurment type value value UV value float watts-m2 real unit unit Unit of value for UV string Unit of value for UV flag flag data quality flag string data quality flag