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, lakes are monitored for photosynthetic active radiation (PAR) levels. This data set exemplifies the vertical profile of underwater PAR profiles in perennial ice covered lakes and ambient PAR measured at the air-ice interface. Profile data can be used to calculate extinction coefficients for the water column and ice layer.
Date Range:
October 28, 1993
to
January 7, 2023
Dataset(s)
Variables (click to expand):
DATASET_CODE
Label:
Definition:
Code to ID the data table
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
LIMNO_RUN
Label:
Definition:
Code for lake's sampling location and date
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
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:
None specified
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
PAR COMMENTS (PROFILE)
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_profile-20240109.csv
(1.68 MB)
Short name:
PAR_PROFILE
Dataset ID:
46
People
Principal Investigator(s):
Cristina D. Takacs-Vesbach
John C. Priscu
Contact:
McMurdo Dry Valleys LTER Information Manager
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-vertical-profiles-collected-lakes-mcmurdo