GCIP/ESOP-97 Park Falls, WI Tower Meteorological and Carbon Dioxide Data Set ---------------------------------------------------------------------------- 1.0 General Information This data set was provided to UCAR/JOSS by Dr. Ken Davis and Dr. Peter Bakwin. Dr. Ken Davis is an Assistant Professor at the Department of Soil, Water, and Climate at the University of Minnesota. Dr. Peter Bakwin is at NOAA CMDL. For further information on these data please contact them: Name: Peter Bakwin Ken Davis Address: NOAA ERL R/E/CG1 439 Borlaug Hall 325 Broadway 1991 Upper Buford Circle Boulder, CO 80303 University of Minnesota St. Paul, MN 55108-6028 e-mail: pbakwin@cmdl.noaa.gov kdavis@soils.umn.edu Phone: 303-497-6773 (612) 625-2774 Fax: 303-497-6290 (612) 625-2208 2.0 Quality Control These data were quality assured and quality controlled by the organizations listed above, UCAR/JOSS has not changed these data in any way, and has conducted no quality control on this data set. The precipitation data from this site for all of 1996 should be considered to be bad. 3.0 Site Location The tower is the WLEF Station and is located 14 km east of Park Falls, Wisconsin. Latitude Longitude Elevation (msl) ----------- ----------- ----------------- 45 56' 43" N 90 16' 28" W 472 m The elevation is that of the tower base. Local Standard Time (LST = CST) = GMT - 6 hours 4.0 Measurements 4.1 lef1996.hr.all and lef1997.hr.all Each record (row) is a 1 hour average of all data. The time is for the start of that period. There are 31 entries in each record, as below. Col Data Units No data c1 c2 --- -------------------- ------------ -------- --- --- 1 Year GMT 1 4 2 Month GMT 6 7 3 Day GMT 9 10 4 Hour GMT 12 13 5 CO2, 11 m (LiCor1) ppm -999.9 15 20 6 CO2, 30 m (LiCor1) ppm -999.9 22 27 7 CO2, 76 m (LiCor1) ppm -999.9 29 34 8 CO2, 122 m (LiCor1) ppm -999.9 36 41 9 CO2, 244 m (LiCor1) ppm -999.9 43 48 10 CO2, 396 m (LiCor1) ppm -999.9 50 55 11 CO2, 396 m (LiCor2) ppm -999.9 57 62 12 Wind Speed, 396 m m/s -99.9 64 68 13 Wind Speed, 122 m m/s -99.9 70 74 14 Wind Speed, 30 m m/s -99.9 76 80 15 Wind Direction, 396 m degrees True -999 82 85 16 Wind Direction, 122 m degrees True -999 87 90 17 Wind Direction, 30 m degrees True -999 92 95 18 Temperature, 396 m degrees C -99.9 97 101 19 Temperature, 122 m degrees C -99.9 103 107 20 Temperature, 30 m degrees C -99.9 109 113 21 Mixing Ratio, 396 m g/kg -99.99 115 120 22 Mixing Ratio, 122 m g/kg -99.99 122 127 23 Mixing Ratio, 30 m g/kg -99.99 129 134 24 RH, 396 m g/kg -99.9 136 141 25 RH, 122 m g/kg -99.9 143 148 26 RH, 30 m g/kg -99.9 150 155 27 Surface Pressure mB -9999.9 157 163 28 PAR microE/m2/s -9999 165 169 29 Rainfall 0.01 inches -999 171 174 30 Incoming Total Rad W/m2 -9999 176 180 31 Net Radiation W/m2 -9999 182 186 --- -------------------- ------------ -------- --- --- c1 c2 refer to the columns spanned by each data value, e.g., execution under UNIX of "cut -c 15-20 lef1995.hr.all" would extract the data for CO2 at 11 m for 1995. There are two LiCor 6251 CO2 analyzers. LiCor1 cycles through the six measurement heights on the tower, while LiCor2 dwells always at the 396 m level. 4.2 lef1996.day.co2 and lef1997.day.co2 Files contain the daily average CO2 mixing ratios for the 11, 30, 76, 122, 244, and 396 m levels. LiCor2 data for 396 m are given after LiCor1 data for all six levels. Missing data are assigned -999.99. 4.3 lef1996.diurnal.co2 and lef1997.diurnal.co2 Files contain the monthly average diurnal cycles for CO2. For each day the 24-hour average CO2 mixing ratio at the 496 m level has been subtracted from every observation for that day. Columns are: 1=YEAR, 2=MO, 3=HR 4= 50%ile, 5= 16%ile, 6= 84%ile, 7= N ( 11 m) (LiCor1) 8= 50%ile, 9= 16%ile, 10= 84%ile, 11= N ( 30 m) (LiCor1) 12= 50%ile, 13= 16%ile, 14= 84%ile, 15= N ( 76 m) (LiCor1) 16= 50%ile, 17= 16%ile, 18= 84%ile, 19= N (122 m) (LiCor1) 20= 50%ile, 21= 16%ile, 22= 84%ile, 23= N (244 m) (LiCor1) 24= 50%ile, 25= 16%ile, 26= 84%ile, 27= N (396 m) (LiCor1) 28= 50%ile, 29= 16%ile, 30= 84%ile, 31= N (396 m) (LiCor2) 5.0 References Bakwin, P.S., C. Zhao, W. Ussler, III, P.P. Tans, and E. Quesnell, Measurements of carbon dioxide on a very tall tower, Tellus, 47B, 535-549, 1995. 6.0 Attribution These data are freely available for use by anyone. We ask that you provide proper attribution. Depending on how you use our data this may be simply an acknowledgment, or it could be that we should be included as co-authors on your paper. Please contact Peter Bakwin (pbakwin@cmdl.noaa.gov, 303-497-6773) so that we can discuss appropriate use of the data and attribution. If you want to use the carbon monoxide (CO) data you should contact Dale Hurst (dhurst@cmdl.noaa.gov, 303-497-7003).