During the 2000-2001 field season, the McMurdo LTER established a snowfence near Lake Fryxell in eastern Taylor Valley. The station was set up to sample sensors every 30 seconds, except the sonic range which samples every 15 minutes, and send summary statistics (for example, averages and maximums) to solid-state storage modules every 15 minutes. This has resulted in approximately 20 values being recorded for final storage in every output interval.

Task List notes

2002-2003 Season

Author of this report: Thomas Nylen 
Sampling Frequency:  every 30 sec 
Averaging and Output Interval: every 15 min 
Program Name: fsn001v1.dld

Filename fsn02031.dat
File Period: January 30, 2002 (24) @ 1115 to Nov 11, 2002 (315) @ 1215

Filename fsn02032.dat
File Period: Various lines of data not in fsn021.dat between April 22, 2002 (112) @ 0400 and October 29, 2002 @ 615 

Filename fsn02033.dat
File Period: Nov 11, 2002 (315) @ 1230 to December 13, 2002 (347) @ 1645

Filename fsn02034.dat
File Period: December 13, 2002 (347) @ 1700

Filename fsn02035.dat
File Period: December 13, 2002 (347) @ 1700 to January 22, 2003 (22) @ 1615

December 13, 2002 (347) @ 1700 to January 22, 2003 (22) @ 1615

1. array I.D. o1 
2. day ok 
3. time ok 
4. mean soil P.A.R. +3.8 m (east) from snow fence (micromols/s/m2) divide by 200, multiply by 294.60 
5. mean soil P.A.R. +1.9 m (east) from snow fence (micromols/s/m2) divide by 200, multiply by 300.48
6. mean Air P.A.R. @ 1.6 m (micromols/s/m2) divide by 200, multiply by 291.48
7. mean air temp. @ 1.5 m (C) rclow 
8. mean soil temperature @ 0 cm in soil -1.9 m (west) of snow fence (C) rclow 
9. mean soil temperature @ 0 cm in soil +0.9 m (east) of snow fence (C) rclow 
10. mean soil temperature @ 0 cm in soil +1.8 m (east) of snow fence (C) rclow 
11. mean soil temperature @ 0 cm in soil +3.6 m (east) of snow fence (C) rclow 
12. sample depth from sensor to surface (cm) Measured depth (1.097) + Value) * 100 
13. sample of battery voltage

2003-2004 Season

Author of this report: Thomas Nylen
Sampling Frequency: sonic every 60 minutes, every 30 sec for all the others
Averaging and Output Interval: every 15 min 
Program Name: fsn023v1v1.dld (Program Signature: 17958)

Filename fsn03041.dat
File Period: January 22, 2003 (22) @ 1615 to November 5, 2003 (309) @ 0700

Filename fsn03042.dat
File Period: November 5, 2003 (309) @ 0715 to November 19, 2003 (323) @ 1430

Filename fsn03043.dat
File Period: November 19, 2003 (323) @ 1445 to December 29, 2003 (363) @ 1200 

Filename fsn03044.dat
File Period: December 29, 2003 (363) @ 1215 to January 23, 2004 (23) @ 1430

Filename fsn03045.dat
File Period: January 23, 2004 (23) @ 1445 to January 29, 2004 (29) @ 1000

1. array I.D. o1 
2. day ok 
3. time ok 
4. mean soil P.A.R. +3.8 m (east) from snow fence (micromols/s/m2) divide by 200, multiply by 223.73
5. mean soil P.A.R. +1.9 m (east) from snow fence (micromols/s/m2) divide by 200, multiply by  220.46 
6. mean Air P.A.R. @ 1.6 m (micromols/s/m2) divide by 200, multiply by 228.68
7. mean air temp. @ 1.3 m (C) rclow 
8. mean soil temperature @ 0 cm in soil -4.5 m (west) of snow fence (C) rclow 
9. mean soil temperature @ 0 cm in soil +1.0 m (east) of snow fence (C) rclow 
10. mean soil temperature @ 0 cm in soil +1.9 m (east) of snow fence (C) rclow 
11. mean soil temperature @ 0 cm in soil +3.8 m (east) of snow fence (C) rclow 
12.Sonic Ranger Depth (cm) Depth surface minus value multiplied by -100 to convert to cm
13. sample of battery voltage

2004-2005 Season

Author of this report: Thomas Nylen
Sampling Frequency: sonic every 60 minutes, every 30 sec for all the others Averaging and Output Interval: every 15 min
Program Name: fsn023v1v1.dld (Program Signature: 5425)

Filename: fsn04051.dat 
File Period: January 29, 2004 (29) @ 1015 to November 9, 2004 (314) @ 1630

Filename: fsn04052.dat
File Period: November 9, 2004 (314) @ 1645  

Filename: fsn04053.dat
File Period: November 9, 2004 (314) @ 1645 to January 3, 2005 (3) @ 1730 

1. array I.D. o1 
2. day ok 
3. time ok 
4. mean soil P.A.R. +3.6 m (east) from snow fence (micromols/s/m2) – Q30801 divide by 200, multiply by 217.27 
5. mean soil P.A.R. +1.8 m (east) from snow fence (micromols/s/m2) – Q30802 divide by 200, multiply by 222.23 
6. mean Air P.A.R. @ 1.6 m (micromols/s/m2) – Q20266 divide by 200, multiply by 275.02 
7. mean air temp. @ 1.5 m (C) rclow 
8. mean soil temperature @ 0 cm in soil -4.5 m (west) of snow fence (C) rclow 
9. mean soil temperature @ 0 cm in soil +1.0 m (east) of snow fence (C) rclow 
10. mean soil temperature @ 0 cm in soil +1.9 m (east) of snow fence (C) rclow 
11. mean soil temperature @ 0 cm in soil +3.8 m (east) of snow fence (C) rclow 
12. Sonic Ranger Depth (cm) Measured depth (1.01) + Value) * 100 
13. sample of battery voltage

2005-2006 Season

Author of this report: Thomas Nylen
Sampling Frequency: sonic every 60 minutes, every 30 sec for all the others
Averaging and Output Interval: every 15 min