itextussockmicroclimate.01 Jeff Welker

Ecosystem/Biomedical Lab University of Alaska Anchorage AK 99508 USA

Paddy Sullivan

Ecosystem/Biomedical Lab University of Alaska Anchorage AK 99508 USA

Arctic LTER Program

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ 2011 Hourly air temperature, humidity, wind speed, soil temperature and soil water data from the control area of the ITEX tussock tundra snowfence study site itex tussock tundra microclimate Acceptance and utilization of LTER data requires that: The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions. The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications A copy of any resultant publications should be sent to: Principal Investigator Ecosystems Center Marine Biological Laboratory Woods Hole, MA 02543 http://ecosystems.mbl.edu/ARC/meta_template.php?FileName=./Welker/IPY_Snow_shrub/itextussockmicroclimate.html Control area adjacent to the ITEX tussock tundra snowfence near Toolik Lake on the North Slope of Alaska -149.6 -149.6 68.6 68.6 2006-09-14 2010-08-06 Version 1 : Mar 2011 Received file from Paddy Sullivan. Updated the metadata sheet and created eml files and web files. JimL Data Manager

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ ARC LTER

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ These are microclimate data that were logged hourly to a CR3000 datalogger. All sensors, except the soil water sensors, were scanned every 30 seconds and averaged hourly. The soil water sensors was measured just at the top of the hour. Sensors are as follows: Air temperature and relative humidity: Campbell Scientific CS215 Wind speed: Met One 014A Soil temperature: Campbell Scientific 107 Volumetric soil water content: Campbell Scientific CS616 pers-1 John Hobbie

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 jhobbie@mbl.edu Lead PI Gus Shaver

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 gshaver@mbl.edu Lead PI Jim Laundre

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_imr@mbl.edu Information Manager The goal of Arctic LTER project is to predict the future ecological characteristics of the site based upon our knowledge of the controls of ecosystem structure and function as exerted by physical setting and geologic factors, climatic factors, biotic factors, and the changes in fluxes of water and materials from land to water. To achieve this goal the Arctic LTER uses several approaches: Long-term monitoring and surveys of natural variation of ecosystem characteristics in space and time. Includes: climate, plant communities and productivity, thaw depth, stream flow, chemistry of streams and lakes, temperatures of streams and lakes, lake chlorophyll lake productivity, zooplankton abundance. Experimental manipulation of ecosystems for years and decades. Includes: tundra warming, shading, and fertilizing, grazer exclusions, fertilization of lakes and streams, addition and subtraction of predators. Synthesis of results and predictive modeling at ecosystem and watershed scales. Includes: stream N cycling, lake physics, bioenergetics of fish populations, water movement and transfer of DOC and nutrients from land to water, soil respiration, cycling and storage of C in tundra under different scenarios of future climates. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The Arctic LTER research site (68°N and 149°W) is in the foothills region of the North Slope of Alaska and includes the entire Toolik Lake watershed and the adjacent watershed of the upper Kuparuk River, down to the confluence of these two watersheds. This area is typical of the northern foothills of the Brooks Range, with continuous permafrost, no trees, a complete snow cover for 7 to 9 months, winter ice cover on lakes, streams, and ocean, and cessation of river flow during the winter. Tussock tundra vegetation of sedges and grasses mixed with dwarf birch and low willows form the dominant vegetation type with areas of drier heath tundra on ridge tops and other well-drained sites as well as areas of river-bottom willow communities. -149.75 -149.0433 68.8 68.5 610 1360 meter uid=ARC,o=lter,dc=ecoinformatics,dc=org all public read itextussockmicroclimate.csv Welker ITEX Tussock Microclimate Data itextussockmicroclimate.csv 1 column , http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10109&urlTail=Welker/IPY_Snow_shrub/data/itextussockmicroclimate.csv date date Date of measurements dd-MMM-yyyy time time Time of measurement hh:mm air temperature air temperature at 2 m height in gill radiation shield celsius real relative humidity relative humidity at 2 m height in gill radiation shield percent real wind speed_avg wind speed_avg at 3 m height meterPerSecond real wind speed_max wind speed_max at 3 m height meterPerSecond real soil water content_10 cm soil water content_10 cm volume water/volume soil at 10 cm depth centimeterCubedPerCentimeterCubed real soil water content_25 cm soil water content_25 cm volume water/volume soil at 25 cm depth centimeterCubedPerCentimeterCubed real soil temperature_10 cm soil temperature_10 cm at 10 cm depth celsius real soil temperature_25 cm soil temperature_25 cm at 25 cm depth celsius real itextussockmicroclimate.01.xls An excel file that has worksheets with the metadata and data. itextussockmicroclimate.01.xls Microsoft Excel http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10109&urlTail=Welker/IPY_Snow_shrub/xlsfiles/itextussockmicroclimate.xls Microsoft Excel file ratio of two quantities as percent composition (1:100) meters per second cubic centimeters per cubic centimeter