Underwater Photosynthetically Active Radiation (PAR) from in-situ Lake Primary Production Experiments in the McMurdo Dry Valleys of Antarctica, 1995-present

Summary

Abstract: 

As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, PAR is measured at one depth during primary production experiments in Dry Valley Lakes. This data set quantifies instantaneous underwater PAR at 10-meter depths in Lakes Bonney and Hoare, and at 7-meter depth in Lake Fryxell (depths vary after 2008, check data file for actual depth). Ambient PAR was also measured at the air-ice interface from each of these lakes.

Date Range: 

Thursday, September 14, 1995 to Friday, December 21, 2018
Details about the photosynthetically active radiation during in-situ experiments -- the units used, column definitions, codes, etc.

Variables: 

DATASET_CODE
  • Label:
  • Definition: Code to ID the data table
  • Type: Nominal
  • Missing values: None specified
LIMNO_RUN
  • Label: Limno Run
  • Definition: Code for lake's sampling location and date
  • Type: Nominal
  • Missing values: None specified
LOCATION NAME
  • Label:
  • Definition: Name of lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
LOCATION CODE
  • Label:
  • Definition: Code for site where measurement was made
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Collection Date
  • Definition: Date on which sample was gathered
  • Type: Date/time
  • Date format: mm/dd/yyyy HH:MM
  • Missing values: None specified
DEPTH (m)
  • Label:
  • Definition: Distance below the piezometric water level at which measurement was taken.
  • Type: Physical quantity
  • Unit: meter
  • Maximum: 60
  • Minimum: 1
  • Precision: 1
  • Missing values:
    • Required entry = None given
UwPAR (umol photons/m2/s)
  • Label:
  • Definition: Underwater photosynthetically active radiation
  • Type: Physical quantity
  • Unit: umolphotons/m2/second
  • Maximum: 100
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
Ambient PAR umol photons/m2/s
  • Label:
  • Definition: Ambient photosynthetically active radiation
  • Type: Physical quantity
  • Unit: umolphotons/m2/second
  • Maximum: 2000
  • Minimum: 0
  • Precision: 0.1
  • Missing values:
    • Null = None given
COMMENTS
  • Label:
  • Definition: Helpful hints about the sample
  • Type: Nominal
  • Missing values: None specified
FILE NAME
  • Label:
  • Definition: Name of file in which data was submitted
  • Type: Nominal
  • Missing values: None specified
DEPTH MASL
  • Label:
  • Definition: Depth referred to the Sea level. Distance below Mean Average Sea Level
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 1
  • Missing values: None specified

Short name: 

PAR_INSTANT

Data set ID: 

3001
Published in the EDI Data Repository

Data Citation: 

Priscu, J. 2019. McMurdo Dry Valleys LTER: Underwater Photosynthetically Active Radiation (PAR) from in-situ Lake Primary Production Experiments in the McMurdo Dry Valleys of Antarctica, 1995-present. Environmental Data Initiative. DOI: 10.6073/pasta/0bc4eabaec8cb9da73f09b07c6820d6b. Dataset accessed 19 August 2019.
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Associated Researcher
Data Manager
Former Data Manager