Arctic LTER

Weather at Toolik

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:	1989_presentgswfrn.05
Dataset Title:	Precipitation cations and anions for June, July and August from a wet/dry precipitation, University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W), Arctic LTER 1989 to present.
Investigator 1:
First Name:	Gus
Last Name:	Shaver
Organization:	Marine Biological Lab
Address line 2:	7 MBL St
Address line 3:
City:	Woods Hole
State:	MA
Zip Code:	02543
Country:	USA
Investigator 2:
First Name:	Jim
Last Name:	Laundre
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Associate Investigators:
Keywords:	precipitation, cations, anions, nitrogen, pH, inoganic nutrients
Abstract:	Precipitation, collected from a wet/dry precipitation collector located near University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W) was sent out for standardized EPA rain water analysis. Nutrient chemistry was also run on a sub sample at the field station.
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.1422&urlTail=terrest/rain/data/1989_presentgswfrn.csv
Data File Name	1989_presentgswfrn
Beginning Date	6/1/1989
End Date	8/24/2003
Number of Data Records	143
Other Files to Reference
Availability Status	1
Quality Control Information
Maintenance Description
Log of Changes:	Version 2: May 2006 Converted metadata to Excel worksheet and added title and attribue. JimL
	Version 3: Added LTERNET Data Access server proxy for Excel and comma delimited data files.
	Version 4: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
	Version 5: Updated to newer metadata sheet (with sites). CH March 2013.

RESEARCH LOCATION:

Location Name

Toolik

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Geographic Description

University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 37' 42"N, 149 degrees 35' 46"W) .

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Location Bounding Box

West Bounding Coordinate

East Bounding Coordinate

North Bounding Coordinate

South Bounding Coordinate

OR if single point location

Latitude

68.624

In Decimal Degrees

Longitude

-149.607

In Decimal Degrees

Elevation

719

In Meters

Link to Google Map

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TAXONOMIC COVERAGE:
Organisms studied

Methods:	An Aerochem Metrics model 301 wet/dry precipitation collector was setup near the Arctic LTER Toolik Experimental Moist Acidic Tussock Plots during the summer months. Precipitation was collected every ten days from 1989 - 1992 and every 7 days from 1993 to present. Dryfall was collected at the end of the August fro 1989 to 1997. Presently dryfall is not collected. If any bird droppings were noted then the sample was discarded. The precipitation volume, pH, NH4-N, NO3-N, and PO4-P were measured at the field station. In 1989 NH4-N and PO4-P chemistry was done manually using standard nutrient procedures (see ARC LTER Methods Manual) with NO3-N being analyzed back in Woods Hole, MA. From 1990-1996 the nutrients were analyze using a Technicon Autoanlyzer or an Alpkem FLOW Solution Analyzer at the station. From 1997 to present analysis of pH, NH4-N and phosphorus are performed at the field station with NO3-N samples being frozen and sent back to Woods Hole, MA for analysis. A sub sample of 250ml was sent for standardized EPA rain water analysis to Global Geochemistry. Global; 6919 Eton Ave.; Canoga Park, CA 91303 until 1997 and then 1998 to present to Shepard Analytical,4545 E. Industrial St., Unit 5P;Simi Valley, CA 93063; Phone: (805) 526-7026; FAX: (805) 526-7032. Notes: Samples sent from Alaska (not frozen) approx. every 7-10 days; Anion/Cation ratio- acceptable range 0.85-1.15. Values less than detection are negative. Numbers after minus sign are 3x the linear least squares error of fit term for the curve used to calculate data. Missing samples are designated by a #N/A.

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Year	Year when rain was collected	datetime		YYYY
Type	Wetfall or Dryfall	text
Date Collected	Date when rain was collected in the field	datetime		dd-mmm-yyyy
Volume	Volume of water in bucket	number	milliliter			#N/A=Missing or Not Measured
Field pH	pH measure in the field	number	dimensionless			#N/A=Missing or Not Measured
ANION_CATION	Molar anion over cation ratio	number	dimensionless			#N/A=Missing or Not Measured
pH	pH measured in lab	number	dimensionless			#N/A=Missing or Not Measured
GRAN	Amount of strong acid (using GRAN tiration) uequiv/l	number	microequivalentPerLiter			#N/A=Missing or Not Measured
COND	Conductivity measured in lab	number	microsiemenPerCentimeter			#N/A=Missing or Not Measured
F umoles_l	Fluorine concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
Cl umoles_l	Chlorite concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
NO2 umoles_l	NO2 concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
PO4 umoles_l	PO4 concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
BR umoles_l	Bromine concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
NO3 umoles_l	Nitrate concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
SO4 umoles_l	SO4 concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
NH4 umoles_l	NH4 concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
NA umoles_l	Sodium concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
K umoles_l	Potassium concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
CA umoles_l	Calcium concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
MG umoles_l	Magnesium concentration	number	micromolePerKilogram			#N/A=Missing or Not Measured
NH4-N mg/m2	NH4 umoles/l * .014 mg/umoles * volume rain * 0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
NO3-N mg/m2	NO3 umoles/l * .014 mg/umoles * volume rain * 0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
PO4-P mg/m2	PO4 umoles/l * .014 mg/umoles * volume rain * 0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
TotalN mg/m2	NH4-N mg/m2 + NO3-N mg/m2	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
TLK NH4-N mg/m2	Sub sample run at Toolik. NH4 umoles/l * .014 mg/umoles * volume rain *0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
TLK NO3-N mg/m2	Sub sample run at Toolik. NO3 umoles/l * .014 mg/umoles * volume rain * 0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
TLK PO4-P mg/m2	Sub sample run at Toolik.PO4 umoles/l * .014 mg/umoles * volume rain * 0.0683 m2 area of bucket	number	milligramPerMeterSquared			#N/A=Missing or Not Measured
COMMENTS	Notes about individual data values.	text				#N/A=Missing or Not Measured
SO4 umole	Sulfate concentraction	number	micromolePerKilogram			#N/A=Missing or Not Measured

	Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.