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.

• The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
• The Principal Investigator be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
• A copy of any resultant publications should be sent to the McMurdo data manager.
  

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 Valley  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	2003/2004	---	Campbell Scientific 107 temp probe
Relative humidity @ 3 m	2003/2004	---	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 @ 1215	wind: every 4 secs. ultrasonic: every 3600 secs.  others: every 30 secs.	every 15 minutes

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	µmols/ 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.

Return To Top