BNZ-LTER Data Set

Title:Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): Half-hourly soil moisture and temperature data, 2008-2015.
Creator(s):Celis, Gerardo (Affiliated Scientist)
Natali, Susan (Post-doc Research Associate)
Schuur, Edward A.G. (Senior Investigator)
Abstract:
The Carbon in Permafrost Experimental Heating Research (CiPEHR) project addresses the following questions: 1) Does ecosystem warming cause a net release of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C that comprises the bulk of the soil C pool influence ecosystem C loss?, and 3) How do winter and summer warming alone, and in combination, affect ecosystem C exchange? We are answering these questions using a combination of field and laboratory experiments to measure ecosystem carbon balance and radiocarbon isotope ratios at a warming experiment located in an upland tundra field site near Healy, Alaska in the foothills of the Alaska Range. This data set includes half-hourly values of surface moisture content (gravimetric, 0-5cm), depth-integrated soil moisture (volumetric, 0-20 cm), and soil temperature in winter warming, summer warming, and control treatment plots at CiPEHR.
Methods:
Data were collected using DC half-bridges (gravimetric water content, 0-5 cm), Campbell Scientific CS616 water content reflectometers (volumetric water content, 0-20 cm), and type-T thermocouples (soil temperature). Data were recorded and stored to Campbell CR1000 datalogger.
Experimental Design:The study site at the Eight Mile Lake (EML) watershed is located in the northern foothills of the Alaska Range. While permafrost thaw can sometimes result in water ponding, depending on local topography, this landscape consists largely of relatively well-drained uplands. The CiPEHR experiments were established in 2008 to complement research along a natural permafrost thaw gradient, at an adjacent site. At the permafrost-thaw gradient site permafrost temperature has been monitored annually in a 30-m-deep borehole since1985, before the permafrost started to thaw. There are two experimental warming treatments at the CiPEHR project: Winter warming (WW) increases soil temperature and ground thaw using snow fences; Summer warming (SW) increases growing season air temperature using open top chambers. The warming treatments are applied in a blocked split-plot design to evaluate the seperate and combined effects of winter and summer warming.
Supplemental Documentation:The Schuur lab data provided on this site are freely available and were furnished by individual Schuur lab members who encourage their use. Please kindly inform in writing (or e-mail) the appropriate Schuur lab scientist(s) (PI) of how you intend to use the data and of any publication plans. It is also important to contact the Schuur lab investigator to assure you are downloading the latest revision of the data and to prevent potential misuse or misinterpretation of the data. Please acknowledge the data source as a citation. If the Schuur lab (PIs) feel that they should be acknowledged or offered participation as authors, they will let you know and we assume that an agreement on such matters will be reached before publishing and/or use of the data for publication. If your work directly competes with the Schuur lab analysis they may ask that they have the opportunity to submit a manuscript before you submit one that uses unpublished data. In addition, when publishing please acknowledge the agency that supported the research. Lastly, we kindly request that those publishing papers using Schuur lab data provide reprints to the PIs. [This statement taken from The Ameriflux Network data sharing policy]. Funding Acknowledgements: National Science Foundation Office of Polar Programs, Arctic Natural Sciences Program (ARC-1019324 , ARC-1203777, OPP-1312402); Department of Energy NICCR Program; Department of Energy Terrestrial Ecosystem Processes; National Science Foundation CAREER Program; National Parks Inventory and Monitoring Program; National Science Foundation Bonanza Creek LTER program.
Keywords:permafrost, soil moisture, soil temperature, tundra
Categories:Biogeochemistry, Climate, Decomposition, Disturbance, GIS, Hydrology, Primary Production, Soils, Succession, Vegetation, Water Quality
Study Period:2008-09-27 to 2013-09-30
Bounding Box:
West Longitude: -149.225556°
North Latitude: 63.883056°
East Longitude: -149.225556°
South Latitude: 63.883056°
Datum: NAD83
Site References:

EML: Tussock tundra at treeline with permafrost thaw and thermokarst. This site is in the Eight Mile Lake Watershed, west of the town of Healy on Stampede Road, Interior Alaska. This area contains three sites on a permafrost thaw gradient and a nearby experimental snow fence manipulation.

Data Columns:
ColumnNameUnitsDescription
1TSyyyy-mm-ddDate measurement was taken
2YearYear measurement was taken
3doyday of year measurement was taken
4hourHour measurement was taken: hourly values reflect the midpoint of the hour in which data were collected (e.g., hour 1.5 reflects data collected from 1:00 - 1:59)
5fenceSnowfence #
6plotPlot # within a fence
7WWwinter warming treatment
8SWsummer warming treatment
9T_fiveoCSoil T at 5 cm
10T_tenoCSoil T at 10 cm
11T_twentyoCSoil T at 20 cm
12T_fortyoCSoil T at 40 cm
13GWCg g-1gravimetric water content (0-5 cm)
14VWC% Volumetric water content (0-20 cm)
Data File(s): 477_EML_AK_CiPEHR_soil_2008to2009.txt (50.45M, 840,961 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2008-10-01,2008,275,0,C,C,1,2,-1.783,-0.489,-0.11,-0.128,NA,NA
2008-10-01,2008,275,0,C,C,1,4,-0.352,-0.036,NA,NA,NA,NA
2008-10-01,2008,275,0,C,C,2,2,-15.38,-0.24,-0.059,-0.074,NA,NA
2008-10-01,2008,275,0,C,C,2,4,-0.426,-0.136,NA,NA,NA,NA
2008-10-01,2008,275,0,C,C,3,2,-0.112,-0.059,-0.06,-0.093,NA,NA
... (840,961 rows total)

477_EML_AK_CiPEHR_soil_2009to2010.txt (48.64M, 840,961 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2009-10-01,2009,274,0,C,C,1,2,-0.23,-0.09,-0.07,-0.135,NA,NA
2009-10-01,2009,274,0,C,C,1,4,-0.08,-0.04,NA,NA,NA,NA
2009-10-01,2009,274,0,C,C,2,2,-0.14,-0.07,-0.05,-0.13,NA,NA
2009-10-01,2009,274,0,C,C,2,4,-0.105,-0.08,NA,NA,NA,NA
2009-10-01,2009,274,0,C,C,3,2,-0.02,0.03,0.06,0.06,NA,NA
... (840,961 rows total)

477_EML_AK_CiPEHR_soil_2010to2011.txt (48.65M, 840,961 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2010-10-01,2010,274,0,C,C,1,2,4.32,0.91,0.04,-0.043,NA,NA
2010-10-01,2010,274,0,C,C,1,4,0.73,0.01,NA,NA,NA,NA
2010-10-01,2010,274,0,C,C,2,2,3,0.47,0.01,-0.086,NA,NA
2010-10-01,2010,274,0,C,C,2,4,0.45,0.03,NA,NA,NA,NA
2010-10-01,2010,274,0,C,C,3,2,0.26,0.06,0.05,0.03,NA,NA
... (840,961 rows total)

477_EML_AK_CiPEHR_soil_2011to2012.txt (48.77M, 843,265 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2011-10-01,2011,274,0,C,C,1,2,0.25,0.26,0.27,0.086,NA,NA
2011-10-01,2011,274,0,C,C,1,4,0.43,0.57,NA,NA,NA,NA
2011-10-01,2011,274,0,C,C,2,2,0.28,0.31,0.28,0.059,NA,NA
2011-10-01,2011,274,0,C,C,2,4,0.07,0.19,NA,NA,NA,NA
2011-10-01,2011,274,0,C,C,3,2,0.32,0.41,0.39,0.18,NA,NA
... (843,265 rows total)

477_EML_AK_CiPEHR_soil_2012to2013.txt (48.7M, 840,961 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2012-10-01,2012,275,0,C,C,1,2,-2.4,-0.31,0.13,0.071,NA,NA
2012-10-01,2012,275,0,C,C,1,4,-0.5,0.04,NA,NA,NA,NA
2012-10-01,2012,275,0,C,C,2,2,-1.13,0.04,0.15,0.045,NA,NA
2012-10-01,2012,275,0,C,C,2,4,-0.68,-0.12,NA,NA,NA,NA
2012-10-01,2012,275,0,C,C,3,2,-0.5,0.3,0.39,0.25,NA,NA
... (840,961 rows total)

477_EML_AK_CiPEHR_soil_2013to2014.txt (49.31M, 840,961 rows)
TS,Year,DOY,hourmin,WW,SW,Fence,Plot,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2013-10-01,2013,274,0,C,C,1,2,-0.1,-0.08,-0.06,-0.127,7.07,42.28
2013-10-01,2013,274,0,C,C,1,4,-0.08,-0.03,NA,NA,8.7,NA
2013-10-01,2013,274,0,C,C,2,2,-0.08,-0.06,-0.04,-0.122,7.6,46.04
2013-10-01,2013,274,0,C,C,2,4,-0.115,-0.11,NA,NA,6.53,NA
2013-10-01,2013,274,0,C,C,3,2,-0.05,-0.03,-0.03,-0.04,NA,48.54
... (840,961 rows total)

477_EML_AK_CiPEHR_soil_2014to2015.txt (48.18M, 840,961 rows)
TS,Year,DOY,hourmin,Fence,Plot,WW,SW,T_five,T_ten,T_twenty,T_forty,GWC,VWC
2014-10-01,2014,274,0,1,1,C,SW,-0.15,-0.05,-0.02,-0.04,NA,NA
2014-10-01,2014,274,0.5,1,1,C,SW,-0.18,-0.07,-0.04,-0.05,NA,NA
2014-10-01,2014,274,1,1,1,C,SW,-0.25,-0.1,-0.05,-0.07,NA,NA
2014-10-01,2014,274,1.5,1,1,C,SW,-0.25,-0.1,-0.05,-0.06,NA,NA
2014-10-01,2014,274,2,1,1,C,SW,-0.22,-0.08,-0.04,-0.05,NA,NA
... (840,961 rows total)
Image File(s): There are no image files available with this data package.
Supplemental File(s): There are no supplemental files available with this data package.
Metadata Formats: Full Metadata (HTML format)
EML (Ecological Metadata Language - XML format)
Public Release:2015-11-30
Network Data ID:knb-lter-bnz.477.16
DOI:10.6073/pasta/92e0cdc960b0edd4bfd9bc66bb622a4d
Publications:

Natali, SM, EAG Schuur, C Trucco, CE Hicks Pries, KG Crummer, and AF Baron Lopez. 2011. Effects of experimental warming of air, soil and permafrost on carbon balance in Alaskan tundra. Global Change Biology 17: 1394-1407. doi: 10.1111/j.1365-2486.2010.02303.x

Natali, S.M., E.A.G. Schuur, R.L. Rubin. 2011. Increased plant productivity in Alaskan tundra with experimental warming of soil and permafrost. Journal of Ecology, doi: 10.1111/j.1365-2745.2011.01925.x

Hicks-Pries, C.E., E.A.G. Schuur, S.M. Natali, and J.G. Vogel. 2013. Moisture controls decomposition rate in thawing tundra. Journal of Geophysical Research - Biogeosciences 18:1-11. doi:10.1002/jgrg.20089

Natali, S.M., E.A.G. Schuur, E. Webb, C.E. Hicks Pries, and K.G. Crummer. 2014. Permafrost degradation stimulates carbon loss from experimentally warmed tundra. Ecology 95(3):602–608. DOI: 10.1890/13-0602.1

Data Citation:Celis, Gerardo; Natali, Susan; Schuur, Edward A.G. 2015. Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): Half-hourly soil moisture and temperature data, 2008-2015., Bonanza Creek LTER - University of Alaska Fairbanks. BNZ:477, http://www.lter.uaf.edu/data/data-detail/id/477. doi:10.6073/pasta/92e0cdc960b0edd4bfd9bc66bb622a4d
Data Acknowledgement:Data are provided by the Bonanza Creek LTER, a partnership between the University of Alaska Fairbanks, and the U.S. Forest Service. Significant funding for collection of these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629) and by the USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-01-JV-11261952-231).
UAF is an affirmative action/equal opportunity employer and educational institution.