Cape Hallett Meteorological Station

Soil Biodiversity and Response to Climate Change: A Regional Comparison of Cape Hallett and Taylor Valley, Antarctica


 

Photo taken by Thomas Nylen - 2003-2004 Season. All Rights Reserved. Reproduced with permission.

 

 

  USAP meteorological station at Cape Hallett on Willett Cove. Adelie penguin colony and the Admiralty Mountains in the background.  

 


Acceptance and utilization of the data requires that:
CONTACTS:

Data Manager: Chris Gardner
Address:Byrd Polar Research Center; Ohio State University; 1090 Carmack Rd; Scott Hall; Columbus OH, 43210-1002
Phone: 614-292-3229
E-Mail: gardner.177@osu.edu

PRINCIPAL INVESTIGATOR: Berry Lyons
Address: Byrd Polar Research Center; Ohio State University; 1090 Carmack Rd; Scott Hall; Columbus OH, 43210-1002
Phone: 614-688-3241
E-Mail:lyons.142@osu.edu

OTHERS:Andrew G. Fountain
Address:Department of Geology, Portland State University, Portland OR, 97207-0751
Phone:(503)725-3386
E-Mail:fountaina@pdx.edu


KEYWORDS: meteorology, temperature, air temperature, soil temperature, precipitation, wind, relative humidity, radiation, surface height

ABSTRACT: Meteorological data was collected as part of the Latitudinal Gradient Project at Cape Hallett, Antarctica. These files contain data for the Cape Hallett meteorology station.

VARIABLES: Samples are represented using the following variable names:

Variable Name Description
Dataset Code Code for given set of information from Beacon Valleyá meteorology station
MetLocID Location code for Beacon Valley meteorology station
Date Date/time of sample (McMurdo time)
AirT3m Average air temperature at 3 m above ground
AirT Comments Comments about air temperature
RH Relative humidity
RH Comments Comments about relative humidity
PAR Photosynthetically active radiation
SwRadIn Incoming shortwave radiation
SwRadOut Outgoing shortwave radiation
Radiation Comments Comments about radiation (photosynthetically active & incoming/outgoing shortwave radiation)
SoilT0cm Soil temperature at 0 cm depth
SoilT5cm Soil temperature at 5 cm depth
SoilT10cm Soil temperature at 10 cm depth
SoilT Comments Comments about soil temperature
WDir Average wind direction
WDirStD Standard deviation of wind direction
WSpd Wind speed
WSpdMax Maximum wind speed
WSpdMin Minimum wind speed
Wind Comments Comments about wind measurements
SurfaceHeight Change in height of the surface
SurfaceHeight Comments Comments about SurfaceHeight

RESEARCH LOCATION: The Cape Hallett meteorology station is located at a latitude of 72.19 S, a longitude of 170.16 E, and an elevation of ~0.5 meters above sea level. Click here to see more details of the Latitudinal Gradient Project

METHODS: The Cape Hallett meteorological station was constructed in the 2003-2004 field season. The station was set up to sample sensors every 30 seconds, except for the sonic sensor which is measured once an hour, and send summary statistics (for example, averages and maximums) to solid-state storage modules every 15 minutes. This has resulted in 19 values being recorded for final storage in every output interval. Primary measurements made on Cape Hallett meteorology station, instrumentation used, and time of initiation are shown in the following table:


Measurement


Starting Season


Ending Season


Instrument Used
Air temperature @ 3 m
á2003/2004
--- Campbell Scientific 107 temp probe
Relative humidity @ 3 m
á2003/2004
--- Vaisala HMP45C RH probe
Soil temperature @ 5 cm
2003/2004
---
Campbell Scientific 107B temperature probe
Soil temperature @ 10 cm
2003/2004
---
Campbell Scientific 107B temperature probe
Wind speed
2003/2004
---
R.M. Young model 05103 wind monitor
Wind direction
2003/2004
---
R.M. Young model 05103 wind monitor
Solar Flux (incoming)
2003/2004
---
LI-COR model L1200X silicon pyranometer
Solar Flux (outgoing)
2003/2004
---
LI-COR model L1200X silicon pyranometer
PAR
2003/2004
---
LI-COR model 190SB quantum sensor
SurfaceHeight
2003/2004
---
Campbell SR50 Ultrasonic Distance Sensor

TIMING:Data was gathered from the Cape Hallett meteorology station on the dates and frequencies listed in the table below. Due to regular station maintenance, occasional short gaps (hours) with missing data occurs.


TIME PERIOD


SAMPLING FREQUENCY


AVERAGING & OUTPUT INTERVAL

December 17, 2003 @ 1730 to January 20, 2003 @ 1215á
wind: every 4 secs.
ultrasonic: every 3600 secs.á
others: every 30 secs.á
every 15 minutesá

COMMENTS: Meteorological data is collected year-round at the station. After retrieving this data, the parameters that are recorded are processed from level 0 (raw) to level 1 (processed, provided on the web). The Cape Hallett raw data file descriptions and task lists and task lists summarize what was done to get from level 0 to level 1.

STATUS: Public Access (Type 1).

VARIABLE DESCRIPTION:

variable type description units missing value indicator minimum maximum precision
Location code Text Code for given set of information from Cape Hallett meteorology station None Required entry n/a n/a n/a
Date Date Date/time of sample (McMurdo time) MM/DD/YY HH24:MM Required entry 12/01/04 00:00 12/31/06 23:59 MM minutes
AirT3m Number Average air temperature at 3 m above ground degrees Celsius Null -70 20 0.01
AirT3m Flag Text Helpful hints on air temperatures None Null n/a n/a n/a
RH3m Number Relative humidity at 3 m above ground percent Null 0 100 0.1
RH3m Flag Text Helpful hints on relative humidity None Null n/a n/a n/a
SwRadIn Number Incoming shortwave radiation/solar flux at 3 m above ground W/m2 Null 0 1000 0.1
SwRadIn Flag Text Helpful hints on incoming shortwave radiation/solar flux measurements None Null n/a n/a n/a
SwRadOut Number Outgoing shortwave radiation/solar flux at 3 m above ground W/m2 Null 0 1000 0.1
SwRadOut Flag Text Helpful hints on outgoing shortwave radiation/solar flux measurements None Null n/a n/a n/a
WDir Number Average wind direction degrees from north Null 0 359.9 0.1
WDir Flag Text Helpful hints on wind direction measurements None Null n/a n/a n/a
WDirStD Number Standard deviation of wind direction degrees fromnorth Null 0 n/a 0.1
WDirStD Flag Text Helpful hints on wind measurements None Null n/a n/a n/a
WSpd Number Wind speed meters persecond Null 0 60 0.1
WSpd Flag Text Helpful hints on wind speed measurements None Null n/a n/a n/a
WSpdMax Number Maximum wind speed meters per second Null 0 60 0.1
WSpdMax Flag Text Helpful hints on max wind speed measurements None Null n/a n/a n/a
WSpdMin Number Minimum wind speed meters per second Null 0 60 0.1
WSpdMin Flag Text Helpful hints on minimum wind speed measurements None Null n/a n/a n/a
PAR Number Photosynthetically active radiation Ámols/ second/ meter2 Null 0 n/a 0.1
PAR Flag Text Helpful hints on photosynthetically active radiation measurements None Null n/a n/a n/a
SoilT5cm Number Soil temperature at 5 cm depth degrees Celsius Null -70 30 0.01
SoilT5cm Flag Text Helpful hints on soil temperatures at 5 cm below the surface None Null n/a n/a n/a
SoilT10cm Number Soil temperature at 10 cm depth degrees Celsius Null -70 30 0.01
SoilT10cm Flag Text Helpful hints on soil temperatures at 10 cm below the surface None Null n/a n/a n/a
SurfaceHeight Number Surface Height Changes centimeters Null 0 98.1 1.0
SurfaceHeight Flag Text Helpful hints on surface height changes None Null n/a n/a n/a
AirPressure Number Air Pressure Changes mbars Null 950 1050 1.0
AirPressure Flag Text Helpful hints on air pressure changes None Null n/a n/a n/a

LOG:Flags used during data processing:

"B": Recorded by instrument, but known to be "bad data"
"F": Bad Value - Raw temp value (-53C and 32.79C) which exceeds the bracketed limited for bisection
"M": Supposedly recorded by instrument, but missing
"N": Not available/applicable (e.g. WDir when WSpd=0)
"R": Out of Range (user-adjustable limits)
"S": SwRadOut is greater than a 95% of SwRadIN
"T": Bad Value - Value below zeroing value
"Z": Negative value generated by noise in the system zeroed out (eg. incoming shortwave radiation level should not be negative, so convert negative value to zero)


NOTE: Data contained in these files has been subjected to quality control standards imposed by the investigator. The user of this data should be aware that, while efforts have been taken to ensure that these data are of the highest quality, there is no guarantee of perfection for the data contained herein and the possibility of errors exists. If you encounter questionable data, please contact the data manager so that the data can be corrected or qualified. Thus, these data may be modified and future data will be appended.

 

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