Weather at Toolik

Arctic LTER Database

Acceptance and utilization of LTER data requires that:

(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) 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.
(3) A copy of any resultant publications should be sent to:

Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543

Older Metadata: Attribute table not in XML (EML) file

Dataset URLs:	METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:	2002i6data
Dataset Title:	Physics and chemistry of lake I6 during the summer of 2002, Arctic LTER 2002.
Investigator 1:
First Name:	Anne
Last Name:	Giblin
Address line 1:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Associate Investigators:	Neil Bettez, Amanda Floyd
Keywords:	temperature, pH, specific conductivity, Dissolved Oxygen, secchi, light, in-vivo fluorescence, Photosynthetically active radiation, PAR
Abstract:	Physics and chemistry of lake I6 during the summer of 2002.
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 Name	2002i6data
Beginning Date	5/1/2002
End Date	9/1/2002
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: For Archival Use: DATE RECEIVED: November 2002 DATA FILE ENTERED BY: Neil Bettez DATA FILE VALIDATION: NAME: Chris Crockett DATE: November 2002



RESEARCH LOCATION:
Geographic Description	Lake I6
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Latitude
Longitude



TAXONOMIC COVERAGE:
Organisms studied

Methods:	A Hydrolab surveyor 4 and datsonde 4 multiprobe were used to measure: depth, temperature, pH, specific conductivity, dissolved oxygen (mg/l), in-vivo fluorescence, and Photosynthetically active radiation (PAR) at half meter intervals. The in vivo fluorescence measurements were taken using a Turner designs SCUFA® (Self-Contained Underwater Fluorescence Apparatus) attached to the Hydrolab datasonde 4. The PAR measurements at both the surface and at each depth were taken using flat-faced, "cosine-corrected" Licor underwater quantum sensors attached to the datasonde 4. Secchi depth was measured using 22-cm disk. Notes: The Hydrolab was calibrated weekly for Oxygen, using the Barometer in the Surveyor 4. Conductivity, and pH were also calibrated weekly using commercial standards. Because of the low conductivity of the waters around Toolik the potassium chloride (KCl) concentration in the reference electrode was changed weekly prior to calibration. Sampling Description. None

Data Table

Variable		Variable descrip.		Precis/Units	Coded
Missing
(Y/N)		Values
SITE		Site code designation					y
Lake		Lake sampled						n
DATE		Date				DD-MMM-YY		n
DEPTH		Depth in meters			meters			n
Temp		Temperature			Centigrade		n
pH		pH				pH units		n
Sp Cond.		Specific Conductivity		µS/cm			n
DO mg/l		dissolved oxygen mg/l		mg/l			n
chlor		in vivo fluorescence		volts	n		n
PAR (Sub)			(µmol s-1m-2)		n
PAR (Deck)			(µmol s-1m-2)		n
Secchi		secchi depth	(22cm plate)	meters		n
Birgean % abs	% absorption						n
Notes
(12) CALCULATIONS
Variable		Formula
Light Extinction or Birgean % absorption = 100*[PAR(Deck)-PAR(Sub)]/PAR(Deck)
µmol photons s-1 m-2 is equal to µ-Einsteins s-1 m-2