Arctic LTER Database

Conditions of Use

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. 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. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml 

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. 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.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

Dataset URLs:	METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:	99dltlo.3
Dataset Title:	Soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature data from Toolik Field Station, Toolik Lake, Alaska for 1999.
Investigator 1:
First Name:	Gus
Last Name:	Shaver
Organization:	Marine Biological Lab
Address line 2:	Ecosystems Center
Address line 3:	7 MBL St
City:	Woods Hole
State:	MA
Zip Code:	02543
Country:	USA
Investigator 2:
First Name:	Jim
Last Name:	Laundre
Organization:	Marine Biological Lab
Address line 2:	Ecosystems Center
Address line 3:	7 MBL St
City:	Woods Hole
State:	MA
Zip Code:	02543
Country:	USA
Associate Investigators:
Keywords:	soil temperature, lake temperature, lake depth, evaporation pan, weather
Abstract:	Weather data file for Arctic Tundra LTER site at Toolik Lake. Only the sensors that are measured every 10 minutes and averaged every three hours are include, i.e. soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature.
For questions about the Metadata and data contact the Investigators. For information about this web site contact:	Arctic LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7496 Email: arc_im@mbl.edu Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL	http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1540&urlTail=weather/tl/data/99dltlo.csv
Data File Name	99dltlo.dat
Beginning Date	5/1/1999
End Date	9/1/1999
Number of Data Records	2926
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: 10Dec99 Checked documentation and data format for LTER database. JL For Archival Use: DATE RECEIVED: June 1999 DATA FILE ENTERED BY: Jim Laundre DATA FILE VALIDATION: NAME: Jim Laundre DATE: 14OCT99
	Version 3: Metadata updated to newer form (with sites sheet). Units updated to current standards. Discrepancy with variable names fixed. CH April 2013.

RESEARCH LOCATION:
Location Name	TFS Weather Station	Select Site or enter New One	Select Site or enter New One	Select Site or enter New One	Select Site or enter New One	Select Site or enter New One	Select Site or enter New One	Select Site or enter New One
Geographic Description	University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 38'N, 149 degrees 36'W)	Enter Description	Enter Description	Enter Description	Enter Description	Enter Description	Enter Description	Enter Description
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Latitude	68.628228973	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees
Longitude	-149.596001285	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees	In Decimal Degrees
Elevation	726.5	In Meters	In Meters	In Meters	In Meters	In Meters	In Meters	In Meters
Link to Google Map	View on Google Map

TAXONOMIC COVERAGE:
Organisms studied
Methods:	Weather data has been collected at Toolik Lake by a Campbell 21x datalogger since June 1988. Sensors that are measured every minute and averaged or totaled every hour include: air temperature and relative humidity at 1 and 5 meters, wind speed at 1 and 5 meters, wind direction at 5 meters, global solar radiation, photosynthetically active radiation, net radiation (Fritschen type), barometric pressure, and unfrozen precipitation. Sensors measured every 10 minutes and averaged every three hours include: soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature. Net radiation and pan evaporation are only measured during the summer months. The hourly data are in the file 99DLTLH.DAT, the three hourly data are in 99DLTLO.DAT, and daily summaries are in 99DLTLD.DAT. A second Campbell 21x datalogger about 700 meters from the main weather station logs air and soil temperatures and photosynthetically active radiation in the experimental treatment plots. Treatments include greenhouse, shading, and fertilization. In the control plot wind speed and direction, global solar radiation and unfrozen precipitation are also measured. This station is also used as a backup to the main weather station. The full description of the sensors and site is in file SENSORS.DOC. The original data is in file 99DLTDAT.ZIP which is archived at The Marine Biological Lab, Woods Hole, MA. Notes: Lake temperature is measured where the lake depth measurement is made. Lake Depth sensor stopped working in December 1998. It was replaced with a temporary 2.5 psi depth sensor for the summer. In August 1999 a 5 psi sensor was installed. See notes under comment variable. Soil temperatures consist of two profiles in a moss dominated plant community. They are within 3 meters of the weather station. Evaporation pan temperature sensor was not placed in the water this summer. Sampling Description. None

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
YEAR	Year in	datetime		yyyy
DATE	Date	datetime		dd-mmm-yyyy
MONTH	Month of collection	text
DAYS	Julian plus fraction of day.	text
ID	Datalogger program step	number	number			#N/A=Missing or Not Measured
JULIAN	Julian date	datetime		ddd
HOUR	Time - Alaska standard time	datetime		hhmm
BATTERY	Battery voltage of datalogger	number	volt			#N/A=Missing or Not Measured
LAKE DEPTH	Toolik lake depth	number	centimeter			#N/A=Missing or Not Measured
EVAPO DEPTH	Evaporation Pan depth	number	millimeter			#N/A=Missing or Not Measured
EVAPO TEMP	Evaporation pan water temperature Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 MOSS	Soil profile 1 moss temperature	number	celsius			#N/A=Missing or Not Measured
SOIL1 5CM	Soil profile 1 temperature 10 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 10CM	Soil profile 1 temperature 20 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 20CM	Soil profile 1 temperature 20 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 50CM	Soil profile 1 temperature 50 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 100CM	Soil profile 1 temperature 100 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL1 150CM	Soil profile 1 temperature 150 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 MOSS	Soil profile 2 moss temperature	number	celsius			#N/A=Missing or Not Measured
SOIL2 5CM	Soil profile 2 temperature 10 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 10CM	Soil profile 2 temperature 20 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 20CM	Soil profile 2 temperature 20 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 50CM	Soil profile 2 temperature 50 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 100CM	Soil profile 2 temperature 100 cm Celsius	number	celsius			#N/A=Missing or Not Measured
SOIL2 150CM	Soil profile 2 temperature 150 cm Celsius	number	celsius			#N/A=Missing or Not Measured
LAKE TEMP	Lake Temp at LAKE DEPTH	number	celsius			#N/A=Missing or Not Measured
Comments	Notes on data.	text
	Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.