Published on
McMurdo Dry Valleys LTER
(
https://mcm.lternet.edu
)
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:
September 14, 1995
to
December 22, 2022
Dataset(s)
Description:
Details about the photosynthetically active radiation during in-situ experiments -- the units used, column definitions, codes, etc.
Variables (click to expand):
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
File:
mcmlter-lake-par_instant-20230711.csv
(6.95 MB)
Short name:
PAR_INSTANT
Dataset ID:
3001
People
Principal Investigator(s):
John C. Priscu
Contact:
McMurdo Dry Valleys LTER
Associated Personnel:
Field Technician
Jade Lawrence
Data Manager
Renée F. Brown
Former Field Crew
Amy Chiuchiolo
Former Data Manager
Inigo San Gil
Source URL:
https://mcm.lternet.edu/content/underwater-photosynthetically-active-radiation-par-situ-lake-primary-production-experiments