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					ARCTIC LTER DATABASE                                                                   Note: This metadata has not been checked for eml comnpliance
DATASET ID:                    2002i5data
Metacat Package ID             570.2
DATASET TITLE:                 Physics and chemistry of lake I5 during the summer of
                               2002, Arctic LTER 2002.

INVESTIGATOR INFORMATION : Investigator 1                                              Investigator 2
               First Name Anne
               Last Name Giblin
             Address line 1
             Address line 2
             Address line 3
                       City
                     State
                  Zip Code
                    Country


OTHERS:                        Neil Bettez, Amanda Floyd

DATA FILE INFORMATION:
            Data File Name     2002i5data
            Beginning Date     01-May-2002
                   End Date    01-Sep-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 I5
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
                                temperature, pH, specific conductivity, Dissolved
                                Oxygen, secchi, light, in-vivo fluorescence,
KEYWORDS:                       Photosynthetically active radiation, PAR
     KeywordThesaurus

ABSTRACT:


                                Physics and chemistry of lake I5
                                during the summer of 2002.




METHODS:
   Protocol References or URL



                                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
VARIABLE DESCRIPTIONS:

Variable Name                 Variable Description                                  Units

Missing
SITE                            Site code designation
Lake                            Lake sampled
DATE                            Date                                                DD-MMM-YY
DEPTH                           Depth in meters                                     meters
Temp                            Temperature                                         Centigrade
pH                              pH                                                  pH units
Sp Cond.                        Specific Conductivity                               µS/cm
DO mg/l                         dissolved oxygen mg/l                               mg/l
chlor                           in vivo fluorescence                                volts
PAR (Sub)                       (µmol s-1m-2)
PAR (Deck)                      (µmol s-1m-2)
Secchi                          secchi depth                                        (22cm plate)
Birgean % abs                   % absorption
Notes
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

                             Variable                       Variable descrip.                      Precis/Units
                             Missing
                             (Y/N)                          Values
                             SITE                           Site code designation
                             Lake                           Lake sampled
SITE                            Site code designation
Lake                            Lake sampled
DATE                            Date
DEPTH                           Depth in meters                            meters
Temp                            Temperature                                Centigrade
pH                              pH
Sp Cond.                        Specific Conductivity                      µS/cm
DO mg/l                         dissolved oxygen mg/l                      mg/l
chlor                           in vivo fluorescence                       volts
PAR (Sub)                                        (µmol s-1m-2)             n
PAR (Deck)                                       (µmol s-1m-2)             n
Secchi                          secchi depth     (22cm plate)  meters
Birgean % abs % absorption
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
as not been checked for eml comnpliance!




       Investigator 3
                        Code                        Missing   Missing Value
                                  Number   DateTime
Measurement Scale       Infomatio                   Value     Code
                                  Type     Format
                        n                           Code      Explanation
nominal
nominal
nominal
datetime
ratio                            real
ratio                            real
ratio                            real
ratio                            real
ratio                            real
ratio                            real
nominal
nominal
ratio                            real
nominal
nominal
nominal
nominal

Coded


                    y
                    n
                y
                n
DD-MMM-YY       n
                n
            n
pH units        n
                n
                n
n               n


n
            n
    Cell: A2
Comment: The dataset identifier is a unique label for the data set that
          is constructed from the file name without the file extension,
          followed by a version number, e.g. 1998dltlh.01. If there are
          any changes made to the metadata or data files the version
           number is incremented and a note is added in the Log of Changes section.


    Cell: A3
Comment: A unique number assigned by the Arctic LTER Data Manager
          for use with Metacat server. You DO NOT need to enter anything.

    Cell: A4
Comment: A title for the dataset. It should be less then 200 characters
          long and should describe the data collected, geographic context,
          research site, and time frame (what, where, and when).


    Cell: A6
Comment: List here the name and address of the person,
          most knowledgeable about the data set.
          If the dataset has more than 1 investigator,
          please enter the information for in the column to the right.


    Cell: A18
Comment: PIs, RAs or Techs who were also involved in the data collection or compilation. Separate names with a comma.

    Cell: A20
Comment: The format of the data file should always be ASCII comma delimited with a .DAT extension. The first line of the data file should be a comma delimited list
          of the variable names. A spreadsheet or database file may also be included, but it must have the first row with the variable names and only data below
          the names. There can not be any other stray data on the sheet.


    Cell: A21
Comment: File naming convention is as follows: First four characters
           are for the year the data were collected. If the file is a
          multiyear collection then use eight or nine characters to
           indicate the span of years. Next characters are for the
          data type identifier. This can either be a PI's initials or a
          data type code, e.g. a lake code, dl for data logger, etc.
          The next four to ten characters are for briefly describing
          the data file. File extensions are .txt for document files and
          .dat for data files. Please do not create excessively long
            names and do not use spaces in the filename. Note that
            we are no longer limiting the name to eight characters.


    Cell: A22
Comment: The date that data collection began for the dataset.

    Cell: A23
Comment: The ending date of data collection.


    Cell: A24
Comment: Number of Data Records field:
          Total number of Data Records found in the dataset. This is typically an integer value.

    Cell: A25
Comment: Any other files that are releated to this data file.
          If not part of the Acrtic LTER database then list full reference to the file.


    Cell: A26
Comment: Type of Availability Status
          Type 1: data available within 2-3 years with few or no restrictions.
          Type 2: in exceptional cases, data sets are available only with
           permission from the ARC LTER investigator. This status is
          rare and needs written justification.


    Cell: A27
Comment: A description of the Quality Control procedures that relate to the dataset.

    Cell: A28
Comment: A description of the maintenance of this data resource.
          This includes information about the frequency of update,
          and whether there is ongoing data collection.

    Cell: A29
Comment: The log should list a date and the reason for any changes.
          This log should be filled in whenever there is a change in the dataset.
          Insert more rows when need.

    Cell: A33
Comment: The name of the sampling location, latitude and longitude if you have it.
          Remember to include not only the name, but, when necessary, details
           and descriptions of the sampling location. Examples would be: specific
           reaches of rivers, sections of lakes, treatment areas (treatment or
           control side of Lake N-2, mouth of the Kuparuk River, near Green Cabin
           Lake in the headwaters of the Kuparuk River, limnocorrals), map
           coordinates, nearby landmarks, or any other details that may help
           someone reference that particular location.

           If the location bounding box is known, enter the coordinates in decimal
           degees below. If the location is known by a single latitude and longitude
           then enter the coordinates in the latitude and longitude cells below.


    Cell: A34
Comment: The name of the sampling location, latitude and longitude if you have it.
          Remember to include not only the name, but, when necessary, details
          and descriptions of the sampling location. Examples would be: specific
           reaches of rivers, sections of lakes, treatment areas (treatment or
          control side of Lake N-2, mouth of the Kuparuk River, near Green Cabin
          Lake in the headwaters of the Kuparuk River, limnocorrals), map
          coordinates, nearby landmarks, or any other details that may help
          someone reference that particular location.


    Cell: A36
Comment: Dataset Sampling Sites West Bounding Coordinate:
          If the dataset's individual sampling site is to be described by a bounding box as
          opposed to a simple text description, this is where the west bounding coordinate
          is entered. The coordinate should be given in decimal degrees. Decimal fractions
          of a degree may be expressed to the precision desired. Longitudes west of the
          meridian shall be designated by minus sign (-) preceding the
           three digits designating degrees (i.e. -81.078).


    Cell: A37
Comment: Dataset Sampling Sites East Bounding Coordinate:
          If the dataset sampling site is to be described by a bounding box as
          opposed to a simple text description, this is where the east bounding
           coordinate is entered. The coordinate should be given in decimal
          degrees. Decimal fractions of a degree may be expressed to the precision
          desired. Longitudes west of the meridian shall be designated by minus sign
          (-) preceding the three digits designating degrees (i.e. 80.490).


      Cell: A38
Comment: Dataset Sampling Sites North Bounding Coordinate:
         If the dataset sampling site is to be described by a bounding box as opposed
         to a simple text description, this is where the north bounding coordinate is
         entered. The coordinate should be given in decimal degrees. Decimal fractions
         of a degree may be expressed to the precision desired. Latitudes north of the
         Equator shall be designated by plus sign (+) preceding the three digits
          designating degrees (e.g. +25.761).


    Cell: A39
Comment: Dataset Sampling Sites South Bounding Coordinate:
          If the dataset sampling site is to be described by a bounding box as opposed
          to a simple text description, this is where the south bounding coordinate is
           entered. Latitudes north of the Equator shall be designated by plus sign (+)
           preceding the three digits designating degrees (+25.913).


    Cell: A41
Comment: Dataset Sampling Sites Latitude field:
          If the dataset Sampling site is to be described by an individual point
          as opposed to a simple text description or bounding box, this is where
          the point(s) latitude coordinate(s) is entered. The coordinate should be
          given in decimal degrees. Decimal fractions of a degree may be expressed
          to the precision desired. Latitudes north of the Equator shall be designated
          by plus sign (+) preceding the three digits designating degrees.


    Cell: A42
Comment: Dataset Sampling Sites Longitude field:
          If the dataset Sampling Site is to be described by an individual point
          as opposed to a simple text description or bounding box, this is where
           the point(s) longitude coordinate(s) is entered. The coordinate should
            be given in decimal degrees. Decimal fractions of a degree may be
          expressed to the precision desired. Longitudes west of the meridian
          shall be designated by minus sign (-) preceding the three digits designating degrees
          .

    Cell: A46
Comment:
          Describe the general procedure of how the taxonomy was determined (keys used, etc.),
           should include a general textual description of all flora/fauna in the study (scope), as
          well as how finely grained the taxonomy is broken down to – for example “family” or
          “genus and species.”
    Cell: A47
Comment: Genus and /or species names for all organisms relevant to the study.
          Be as complete as possible separating the entries with a semicolon.


    Cell: A49
Comment: Words that may be helpful in cross-referencing or cataloging the data.
          These should be in lower case format, unless the word is a proper name.
          Please separated keywords by a comma.


    Cell: A50
Comment: Dataset KeywordThesaurus field:
          OPTIONAL: This field provides the name of the
          official keyword thesaurus from which keyword was derived.
          The keyword thesauri are usually discipline specific.

    Cell: A52
Comment: Short, accurate explanation of the data set. Be informative since this is
          used as the description in the web page index. Double click on the box
          to write or paste the information.


    Cell: A60
Comment: The description of methods and research site should be fairly detailed and
          include any literature references (including author, title, journal and page
          numbers) pertaining to the methods.

           Include a Notes: section if appropriate. Click on the box and paste or type
           the needed infromation.

    Cell: A61
Comment: Reference to any protocols used in the study.
          Be as complete as possible including the version used.
          Note any deviation from the protocols in the methods section.

    Cell: A107
Comment: This section describes the variables in the data set. Please be as complete as necessary.

    Cell: A108
Comment: Add rows as needed with a separated row for each variable name. The variables Date and Comments must be
          included in every data file.
            Date should be in the format DD-MMM-YYYY (i.e. 01-Jun-1988). This format avoids confusion between Canadian
          and USA forms of dates.
               Comments must be the last column in the file, and includes any additional information about individual data points.
            All Comments for a data point must be entered on a single line, which can be no longer than 250 characters.
                The variable Site, a numerical 3-digit code, should be taken from the Site Name Code List (code for streams, code
            for lakes, code for terrestrial/landwater). If you have a new site that is not on the list, do not code it yourself; ask the
            data manager to add it to the master list. The variable D/D (for depth/distance) must be included in every aquatic file,
            as it corresponds to the depth in a lake or the distance along a river from which a sample was taken. For those working
            on the Kuparuk River, D/D needs to be relative to the 1984 phosphorous dripper, and Oksrukuyik Creek should be relative
            to the 0.0 K dripper site set in 1989.
                Variables for time in Hours are to be in 24 hour format (not AM or PM) and based on Alaska Standard Time, not Alaska
            Daylight Savings Time. Entries should be 4 places, hours and minutes, without any punctuation (examples 0458 or 2133).
            Individual PIs need to be responsible for making these time corrections.
              Missing data shall be designated by a Missing Data Value. The value used should be noted , i.e. BLANK, period, N/A.
            The value -9999 should be used with caution since it can be a real value in rare cases.

    Cell: B108
Comment: Variable Description should be a brief explanation of what the Variable name represents.

    Cell: C108
Comment: Units field: If variable is a number, e.g. raito or interval,
          use drop-down list to choose a unit listed. If not listed
          then enter the units using a format similar to the other
          units.

    Cell: D108
Comment: Measurement Scale field: Enter either nominal, ordinal, interval, ratio, datetime.

            Knowing how data are measured and recorded is important for proper satistical analysis.

            1. Nominal Data
            Named categories, a list of coded values, or plain text descriptions. There is no ordering
            between the values, e.g. male/female, evergreen/decidious. It makes no sense to state
            that evergreen > decidious.

            2. Ordinal Data
            Named categories but are in order with reference to one another. However there is no
            constant distance scale between them, e. g. low, medium, high. An ordinal scale only lets
            you interpret gross order but not the relative positional distances

            3. Interval Data
            Ordered, constant scale, but no natural zero. Differences make sense, but ratios do not
             (e.g. temperature in Celsius or Fahrenheit where 30°-20°=20°-10°, but a temperature
             of 30° is not twice as warm as one of 15°.

            4. Ratio Data
            Ordered, constant scale, natural zero,e.g. height, weight, age, length.

            5. Datetime
            Measures of time.


    Cell: E108
Comment: Codes Definitions:
          For any variables that are coded, list the values/definitions
          for codes used. Format the list as a vertical-line separated list, e.g:
          MAT=Mosit Acidic Tussock | MNT = Mosit Non-acidic Tussock.


    Cell: F108
Comment: NumberType: If variable is a number, e.g. raito or inerval, then select from the drop-down list.

            real: numbers that contain fractional or decimal elements
            integers: non-fractional positive or negative numbers
            whole: numbers of positive integers
            natural: whole numbers except zero.

    Cell: G108
Comment: Date Time format field: Enter the datetime format
          (ex. DD-MMM-YY) for variables that are dates and or time.

    Cell: H108
Comment: Indicate the code used for missing values, e.g. blanks or -99999

    Cell: I108
Comment: MissingValueCode Explanation:
          Short explanation of the missing value code,
           -9999 = not measured; -8888 = data lost.
site         Lake   Date   Depth       Temp       pH             SpCond     DO             Alk
code                MMDDYY meters      degC       units          uS/cm      mg/l           meq/L

       115   I5     6/25/2002      0       9.14           6.61       10.7          11.07       0.03
       115   I5     6/25/2002    0.5        9.1           6.49       10.5          10.87      0.026
       115   I5     6/25/2002      1       8.82           6.46       10.7          10.68      0.028
       115   I5     6/25/2002      2       8.61           6.44       10.2          10.65      0.034
       115   I5     6/25/2002    2.5       8.57           6.45       10.1          10.58      0.048
       115   I5     6/25/2002      3       8.52           6.44       10.1          10.57      0.067
       115   I5     6/25/2002    3.5        8.5           6.47        9.7          10.59      0.075
       115   I5     6/25/2002      4       8.41           6.46        9.7          10.48      0.091
       115   I5     6/25/2002    4.5        8.3           6.45        9.6          10.45      0.104
       115   I5     6/25/2002      5       8.28           6.44        9.2          10.57      0.102
       115   I5     6/25/2002    5.5       8.29           6.45        9.2          10.47      0.106
       115   I5     6/25/2002      6       8.25           6.44        9.1           10.4      0.104
       115   I5     6/25/2002    6.5       8.18           6.43        9.3          10.39         0.1
       115   I5     6/25/2002      7        8.1           6.43        8.8          10.35      0.114
       115   I5     6/25/2002    7.5        8.1           6.44        8.6           10.3      0.123
       115   I5     6/25/2002   7.61       8.09           6.39        9.6           8.92      0.005
       115   I5     7/16/2002      0      14.25           7.01       10.1          10.39      0.023
       115   I5     7/16/2002    0.5      14.02           6.85       10.3          10.14      0.026
       115   I5     7/16/2002      1      13.65           6.79       10.3          10.15      0.026
       115   I5     7/16/2002    1.5       13.5           6.76       10.3           10.2       0.03
       115   I5     7/16/2002      2      13.32           6.73        9.9          10.24       0.03
       115   I5     7/16/2002    2.5      13.16            6.7       10.1          10.28      0.037
       115   I5     7/16/2002      3      12.47           6.64        9.8           10.4      0.045
       115   I5     7/16/2002    3.5       11.9           6.58        9.8          10.52      0.056
       115   I5     7/16/2002      4      11.73           6.55        9.7          10.56       0.06
       115   I5     7/16/2002      5         11           6.48        9.7          10.68      0.076
       115   I5     7/16/2002    5.5      10.28           6.37        9.4           10.6      0.086
       115   I5     7/16/2002      6      10.12           6.32        9.4          10.52      0.083
       115   I5     7/16/2002    6.5      10.04            6.3        9.6          10.36      0.088
       115   I5      7-Aug-02      0      11.25           7.58        8.5           9.65      0.104
       115   I5      7-Aug-02      1      11.31           7.14        8.7           9.61      0.012
       115   I5      7-Aug-02      2       11.3           7.09        8.8           9.61      0.055
       115   I5      7-Aug-02      3      11.31           7.05        8.8           9.69      0.056
       115   I5      7-Aug-02      4      11.31           7.04          9           9.77      0.059
       115   I5      7-Aug-02      5       11.3           7.03        8.8            9.1      0.062
                       secchi
Light (sub) Light (deck)           Birgean                vertical ext coef (nt)
                                              Extinction or absorption Notes
u einst     u einst    meters                 co
                                   % absorption efficient

     1254       1299           3                            0.954924
      733       1262           3    41.91759    1.086615
      478       1282           3    62.71451    0.986566
      157       1234           3    87.27715    1.030885
      174       1337           3    86.98579    0.815651
       95       1216           3     92.1875    0.849815
       61       1188           3    94.86532    0.848329
       39       1232           3    96.83442    0.863208
       17       1268           3    98.65931    0.958218
        8       1254           3    99.36204     1.01093
        2       1185           3    99.83122    1.160791
        6       1275           3    99.52941    0.893157
       10       1250           3
       14       1167           3
       15       1137           3
       16       1139           3
     1610                   6.05
     1588                   6.05
      726                   6.05
      559                   6.05
      382                   6.05
      170                   6.05
      178                   6.05
      102                   6.05
       80                   6.05
       24                   6.05
       10                   6.05
        2                   6.05
        4                   6.05
      276                    4.2
       51                    4.2
       35                    4.2
       18                    4.2
        5                    4.2
        1                    4.2

				
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