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Arctic LTER Database

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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 

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.


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 via LTER Data Portal
Dataset ID:2005_Toolik_Lake_Climate_Kling.09
Dataset Title:Toolik Lake meteorological data collected during the 2005 field season
Investigator 1: 
First Name:George
Last Name:Kling
Organization:University of Michigan
Address line 2:Department of Ecology and Evolutionary Biology
Address line 3:830 North University
City:Ann Arbor
Zip Code:48109-1048
Country:United States of America
Investigator 2: 
First Name:Chris
Last Name:Wallace
Address line 2:
Address line 3:
Zip Code:
Investigator 3: 
First Name:Amanda
Last Name:Field
Associate Investigators:
Keywords:meteorology, temperature, humidity, wind speed, wind direction, climate, relative humidity, wind, radiation, long wave, short wave, arctic lakes
Abstract:Yearly file describing the metological conditions on Toolik Lake (named the Toolik Lake Climate station), adjacent to the Toolik Field Research Station (68 38'N, 149 36'W). This is a floating climate station and should not be confused with the Toolik Field Station Climate site (TFS Climate Station or Met Station) which is a terrestrial station (located on land). Note that this land station has been called the "Toolik Main Climate Station", and the station on the lake is located where the main lake sampling site is located so it has also been called the Toolik Lake Main Climate Station. Measurements include air temperature, relative humidity, wind direction, wind speed, and radiation.
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
Online URL:
Data File URL
Data File Name 2005_Toolik_Lake_Climate_Kling.csv
Beginning Date 6/23/2005
End Date 8/18/2005
Number of Data Records 16120
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Entered metadata into new metadata form.
Version 2: Data URL was changed to point to the LTERNET Data Access server
Version 3: LTERNET Data Access server proxy changed from to
Version 4: Added LTERNET Data Access server proxy for Excel files.
Version 5: Update LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
Version 6: Updated to new metadata form and to EML 2.1.0 Jim L 25Jan12 Missing values changed to "."
Version 7: Updated metadata form to newer version (with sites sheet). CH March 2013.
Version 8: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 15Jan14
Version 9: Changed Distrubution URL since the LTER network DAS system is being discontinued. JimL 9Apr2015
RESEARCH LOCATION:                  
Location Name Toolik 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 Toolik Lake 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 68.629961 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.612633 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation 719 In Meters In Meters In Meters In Meters In Meters In Meters In Meters  
Link to Google Map View on Google Map                
Organisms studied
Methods:The meteorological station on the surface of Toolik Lake was first installed in the spring of 1998. Originally the station recorded air temperature, relative humidity, wind speed, and wind direction. In 1999, a Kipp and Zonen CM3 radiation instrument was added to record the downwelling and upwelling of longwave and shortwave radiation. Measurements of all variables are taken at a 30 second interval, averaged every 5 minutes, and logged into a Campbell Scientific CR10x datalogger or starting in 2007 a Campbell CR1000 datalogger.

The meteorological station is anchored in place as soon as possible in June (when ice is off lake) and remains in place until the Land-Water group leaves in August. This station measures air temperature and relative humidity (with Vaisala HMP45C), wind speed and direction (with Met One 014A anemometer) and radiation (with CM3 Kipp and Zonen Radiometer). The longwave radiation is corrected for instrument case temperature. The wind sensor is ~ 3.8 meters above the water surface, and the temperature sensor is ~2.5 m above the water surface. The upwelling radiation sensors are located ~50 cm above the water surface.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
DateTime_AST Combined date and time of sampling in Alaska Daylight Savings Time (1 hour ahead of Alaska Standard Time: if 13:00 DST than 12:00 AST) datetime   dd mmm yyyy hh:mm   .=Missing or Not Measured
Air_Temp_degC Air Temperature ~ 2.5 meters height above lake surface. number celsius     .=Missing or Not Measured
Relative_Humidity_percent Relative Humidity ~ 2.5 meters height above lake surface. number percent     .=Missing or Not Measured
Wind_Direction_deg Wind Direction in degrees from true North, ~3.8 meters height above lake surface. number degree     .=Missing or Not Measured
Wind_Speed_msec Wind speed in meters per second, ~3.8 meters height above lake surface. number meterPerSecond     .=Missing or Not Measured
WindDir_STDEV Standard Deviation of wind direction. number meterPerSecond     .=Missing or Not Measured
Max_Wind_Speed_msec Maximum wind speed in meters per second number meterPerSecond     .=Missing or Not Measured
SW_downwelling_watts_per_square_meter Short wave downwelling number wattPerMeterSquared     .=Missing or Not Measured
SW_upwelling_watts_per_square_meter Short wave upwelling number wattPerMeterSquared     .=Missing or Not Measured
LW_downwelling_watts_per_square_meter Long wave downwelling number wattPerMeterSquared     .=Missing or Not Measured
LW_upwelling_watts_per_square_meter Long wave upwelling number wattPerMeterSquared     .=Missing or Not Measured

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