-- Niwot Ridge Ameriflux 5-minute Data -- MST Time Period: 2002 12/31 17:02:30 - 2003 12/31 16:57:30, JD 0.710-365.707 (MST) UTC Time Period: 2003 01/01 00:02:30 - 2003 12/31 23:57:30, JD 1.002-365.998 (UTC) File Name: cu_5min_2003_12.dat File Created by: Sean Burns (sean.burns@colorado.edu) File Created for: CU Ameriflux Web Site (http://urquell.colorado.edu/data_ameriflux/) Date: 20-Mar-2006 -------- Data Version: 1.0 notes: * missing data are filled with "NaN" * No tilt correction to any sonic data * No gap-filling of missing data * sonic boom angles: 21.5m csat : 193 Mag N = 203 deg from True North 21.5m ati : 194 Mag N = 204 deg from True North 12.5m ati : 10 Mag N = 20 deg from True North 8m csat : 283 Mag N = 293 deg from True North 5.7m csat : 180 Mag N = 190 deg from True North 2.56m csat : 186 Mag N = 196 deg from True North 1.5m csat : 189 Mag N = 199 deg from True North * Handar wind directions are limited in accuracy (need to be computed from 1-hz data) * An empirical correction has been applied to the Ta_8m data. The correction is of the form: Ta = Ta_raw + T_corr, where T_corr=0.25 degC - The correction was determined based on (1) temperature comparisons with the oregon state prt in Sept 2005, (2) comparisons with unaspirated thermocouples, (3) comparisons with other temperature measurements at high WS. * Significant changes/events at the CU Tower in 2003: -- On Feb 27th, a bug in the data aquisition code was fixed by Gordon Maclean. Before this date some parameters are messed up. -- On Mar 12th, a new T/RH sensor is installed at 2m. Prior to this date T is ok, but RH is bad. -- From Mar18-21st, a major snowstorm shutdown the data system. -- On Jun 24th, moved the 1.5m csat up to 5.7m. And moved the 6m handar down to 1.6m. -- In early July, Dave Bowling installed TGA. Removed in October. -- On Aug 6th, the ati and li-7500 at 21.5m was moved down to 12.5m. -- On Dec 5th, the KZ CNR-1 sensor was removed from the top of the tower and returned to Peter Blanken. -- There were lots of problems with the li-6262 throughout 2003. -- The small pump for the li-6251 was slowly dying as the year progressed (it was finally replace in Jan, 2004) For full details see: http://urquell.colorado.edu/calendar/ -------- Data Summary (missing or problematic data set to NaN): Parameter Name | No Samples No Bad Sample Percentage Min Max Mean Std Dev. 008. P_bar_1200cm | 8928 824 9.23 % 69.15 71.82 70.60 0.63 009. RH_0200cm | 8928 824 9.23 % 10.76 97.90 56.80 21.31 010. RH_0800cm | 8928 824 9.23 % 4.72 95.67 46.71 22.66 011. RH_2150cm | 8928 824 9.23 % 4.34 99.22 47.18 23.58 012. Rlw_in_2550cm_KZ | 8928 7649 85.67 % 258.81 353.39 308.71 19.89 013. Rlw_out_2550cm_KZ | 8928 7641 85.58 % 139.98 466.60 210.16 27.38 014. Rnet_2550cm_REBS | 8928 84 0.94 % -125.87 482.18 14.69 137.42 015. Rppfd_in_2550cm | 8928 84 0.94 % -0.87 1261.94 184.39 308.74 016. Rppfd_out_2550cm | 8928 84 0.94 % -0.59 140.69 11.88 19.80 017. Rsw_in_2550cm_KZ | 8928 7568 84.77 % -7.81 703.34 102.38 179.59 018. Ta_0200cm | 8928 86 0.96 % -17.83 7.50 -5.37 5.55 019. Ta_0800cm | 8928 86 0.96 % -17.97 8.33 -4.87 5.86 020. Ta_0800cm_raw | 8928 86 0.96 % -18.22 8.08 -5.12 5.86 021. Ta_2150cm | 8928 86 0.96 % -18.16 7.68 -4.69 5.85 022. Tcase_2550cm_KZ | 8928 7649 85.67 % 259.94 280.99 271.54 4.34 023. Ttc_0040cm | 8928 84 0.94 % -18.03 6.24 -5.97 5.26 024. Ttc_0091cm | 8928 84 0.94 % -18.06 6.84 -5.76 5.41 025. Ttc_0138cm | 8928 84 0.94 % -18.07 7.33 -5.64 5.48 026. Ttc_0200cm | 8928 84 0.94 % -18.10 7.42 -5.53 5.58 027. Ttc_0396cm | 8928 84 0.94 % -18.13 8.13 -5.24 5.77 028. Ttc_0592cm | 8928 84 0.94 % -18.15 8.76 -5.10 5.84 029. Ttc_0806cm | 8928 84 0.94 % -18.19 9.13 -4.90 5.94 030. Ttc_0993cm | 8928 84 0.94 % -18.21 8.95 -4.75 5.97 031. Ttc_1298cm | 8928 84 0.94 % -18.19 8.70 -4.58 5.98 032. Ttc_1650cm | 8928 84 0.94 % -18.22 8.41 -4.56 5.96 033. Ttc_1950cm | 8928 84 0.94 % -18.23 8.24 -4.55 5.93 034. Ttc_2198cm | 8928 84 0.94 % -18.26 8.07 -4.54 5.94 035. Ttc_ref | 8928 0 0.00 % -17.11 8.10 -4.74 5.18 036. co2_co2_li7500_2150cm_mmol | 8928 8844 99.06 % 0.00 0.15 0.01 0.03 037. co2_li7500_1250cm_mmol | 8928 367 4.11 % 2.08 19.98 11.32 0.55 038. co2_li7500_2150cm_mmol | 8928 8844 99.06 % 11.54 11.84 11.69 0.11 039. h2o_krypton_mV | 8928 179 2.00 % 30.36 915.97 512.32 127.18 040. h2o_li7500_1250cm_mmol | 8928 448 5.02 % 64.18 654.07 174.65 46.35 041. h2o_li7500_2150cm_mmol | 8928 8928 100.00 % NaN NaN NaN NaN 042. sh_0200cm | 8928 826 9.25 % 0.50 4.29 1.99 0.75 043. sh_0800cm | 8928 826 9.25 % 0.33 4.07 1.65 0.76 044. sh_2150cm | 8928 826 9.25 % 0.24 4.14 1.67 0.79 045. tc_ati_1250cm | 8928 141 1.58 % -16.25 9.30 -2.96 5.78 046. tc_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 047. tc_csat_0150cm | 8928 8844 99.06 % -7.61 -4.15 -5.40 1.20 048. tc_csat_0256cm | 8928 7 0.08 % -18.09 7.71 -5.29 5.67 049. tc_csat_0570cm | 8928 91 1.02 % -17.76 8.81 -4.53 5.90 050. tc_csat_0800cm | 8928 84 0.94 % -18.08 8.18 -4.85 5.89 051. tc_csat_2150cm | 8928 179 2.00 % -18.47 7.33 -4.83 5.90 052. tc_tc_ati_1250cm | 8928 141 1.58 % 0.00 7.25 0.11 0.23 053. tc_tc_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 054. tc_tc_csat_0150cm | 8928 8844 99.06 % 0.00 0.05 0.01 0.01 055. tc_tc_csat_0256cm | 8928 7 0.08 % 0.00 3.22 0.07 0.14 056. tc_tc_csat_0570cm | 8928 91 1.02 % 0.00 3.05 0.07 0.14 057. tc_tc_csat_0800cm | 8928 84 0.94 % 0.00 3.40 0.09 0.18 058. tc_tc_csat_2150cm | 8928 179 2.00 % 0.00 5.67 0.12 0.23 059. tga_bowling_c12o2 | 8928 8928 100.00 % NaN NaN NaN NaN 060. tga_bowling_c13o2 | 8928 8928 100.00 % NaN NaN NaN NaN 061. u_ati_1250cm | 8928 141 1.58 % -2.65 9.94 2.79 2.36 062. u_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 063. u_csat_0150cm | 8928 8844 99.06 % -0.51 0.57 0.10 0.25 064. u_csat_0256cm | 8928 7 0.08 % -1.00 1.06 0.14 0.31 065. u_csat_0570cm | 8928 91 1.02 % -0.73 1.09 0.25 0.29 066. u_csat_0800cm | 8928 84 0.94 % -1.22 1.84 0.48 0.46 067. u_csat_2150cm | 8928 179 2.00 % -4.29 16.02 4.98 4.21 068. u_raw_ati_1250cm | 8928 141 1.58 % -4.34 2.85 -0.50 0.91 069. u_raw_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 070. u_raw_csat_0150cm | 8928 8844 99.06 % -0.50 0.49 0.04 0.19 071. u_raw_csat_0256cm | 8928 7 0.08 % -0.98 0.74 0.01 0.21 072. u_raw_csat_0570cm | 8928 91 1.02 % -1.42 0.79 0.02 0.20 073. u_raw_csat_0800cm | 8928 84 0.94 % -1.03 1.85 0.50 0.49 074. u_raw_csat_2150cm | 8928 179 2.00 % -6.49 6.78 0.12 1.61 075. u_u_ati_1250cm | 8928 141 1.58 % 0.00 16.75 3.15 2.76 076. u_u_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 077. u_u_csat_0150cm | 8928 8844 99.06 % 0.03 1.13 0.24 0.18 078. u_u_csat_0256cm | 8928 7 0.08 % 0.00 2.37 0.40 0.37 079. u_u_csat_0570cm | 8928 91 1.02 % 0.00 3.12 0.50 0.47 080. u_u_csat_0800cm | 8928 84 0.94 % 0.00 3.14 0.55 0.47 081. u_u_csat_2150cm | 8928 179 2.00 % 0.01 27.42 5.51 4.71 082. u_v_ati_1250cm | 8928 141 1.58 % -4.84 3.81 -0.14 0.71 083. u_v_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 084. u_v_csat_0150cm | 8928 8844 99.06 % -0.17 0.19 0.00 0.05 085. u_v_csat_0256cm | 8928 7 0.08 % -0.78 0.60 0.02 0.07 086. u_v_csat_0570cm | 8928 91 1.02 % -0.75 0.44 0.00 0.07 087. u_v_csat_0800cm | 8928 84 0.94 % -0.89 0.70 -0.05 0.12 088. u_v_csat_2150cm | 8928 179 2.00 % -7.98 9.32 0.05 1.03 089. u_w_ati_1250cm | 8928 141 1.58 % -1.54 4.19 0.45 0.66 090. u_w_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 091. u_w_csat_0150cm | 8928 8844 99.06 % -0.03 0.01 -0.00 0.01 092. u_w_csat_0256cm | 8928 7 0.08 % -0.17 0.10 -0.01 0.02 093. u_w_csat_0570cm | 8928 91 1.02 % -0.38 0.26 -0.01 0.05 094. u_w_csat_0800cm | 8928 84 0.94 % -0.86 0.30 -0.10 0.11 095. u_w_csat_2150cm | 8928 179 2.00 % -3.72 1.82 -0.27 0.53 096. v_ati_1250cm | 8928 141 1.58 % -4.92 4.49 -0.48 1.05 097. v_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 098. v_csat_0150cm | 8928 8844 99.06 % -0.50 0.53 0.01 0.20 099. v_csat_0256cm | 8928 7 0.08 % -1.02 0.74 -0.01 0.21 100. v_csat_0570cm | 8928 91 1.02 % -1.40 0.78 -0.03 0.21 101. v_csat_0800cm | 8928 84 0.94 % -1.29 0.99 -0.16 0.30 102. v_csat_2150cm | 8928 179 2.00 % -9.89 6.94 -1.98 2.42 103. v_raw_ati_1250cm | 8928 141 1.58 % -2.93 9.67 2.78 2.42 104. v_raw_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 105. v_raw_csat_0150cm | 8928 8844 99.06 % -0.67 0.51 -0.09 0.26 106. v_raw_csat_0256cm | 8928 7 0.08 % -1.06 1.04 -0.14 0.31 107. v_raw_csat_0570cm | 8928 91 1.02 % -1.09 0.77 -0.25 0.29 108. v_raw_csat_0800cm | 8928 84 0.94 % -1.51 1.29 0.04 0.25 109. v_raw_csat_2150cm | 8928 179 2.00 % -16.87 4.72 -5.36 4.58 110. v_v_ati_1250cm | 8928 141 1.58 % 0.01 29.01 5.32 5.18 111. v_v_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 112. v_v_csat_0150cm | 8928 8844 99.06 % 0.05 0.70 0.22 0.12 113. v_v_csat_0256cm | 8928 7 0.08 % 0.00 2.00 0.37 0.32 114. v_v_csat_0570cm | 8928 91 1.02 % 0.00 2.18 0.35 0.31 115. v_v_csat_0800cm | 8928 84 0.94 % 0.00 4.56 0.70 0.66 116. v_v_csat_2150cm | 8928 179 2.00 % 0.00 29.99 7.59 6.79 117. v_w_ati_1250cm | 8928 141 1.58 % -10.70 0.79 -1.86 2.02 118. v_w_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 119. v_w_csat_0150cm | 8928 8844 99.06 % 0.00 0.06 0.02 0.01 120. v_w_csat_0256cm | 8928 7 0.08 % -0.06 0.19 0.02 0.02 121. v_w_csat_0570cm | 8928 91 1.02 % -0.12 0.34 0.03 0.04 122. v_w_csat_0800cm | 8928 84 0.94 % -0.32 0.70 0.03 0.08 123. v_w_csat_2150cm | 8928 179 2.00 % -1.00 9.08 1.87 1.88 124. w_raw_ati_1250cm | 8928 141 1.58 % -1.32 0.33 -0.32 0.27 125. w_raw_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 126. w_raw_csat_0150cm | 8928 8844 99.06 % -0.05 0.05 -0.01 0.02 127. w_raw_csat_0256cm | 8928 7 0.08 % -0.12 0.11 -0.00 0.03 128. w_raw_csat_0570cm | 8928 91 1.02 % -0.22 0.39 0.03 0.05 129. w_raw_csat_0800cm | 8928 84 0.94 % -0.52 0.52 0.05 0.08 130. w_raw_csat_2150cm | 8928 179 2.00 % -2.07 0.69 -0.52 0.47 131. w_tc_ati_1250cm | 8928 141 1.58 % -0.75 0.70 0.00 0.15 132. w_tc_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 133. w_tc_csat_0150cm | 8928 8844 99.06 % -0.01 0.01 -0.00 0.00 134. w_tc_csat_0256cm | 8928 7 0.08 % -0.21 0.05 -0.01 0.01 135. w_tc_csat_0570cm | 8928 91 1.02 % -0.48 0.16 -0.01 0.02 136. w_tc_csat_0800cm | 8928 84 0.94 % -0.37 0.27 -0.02 0.03 137. w_tc_csat_2150cm | 8928 179 2.00 % -0.75 0.73 -0.00 0.14 138. w_w_ati_1250cm | 8928 141 1.58 % 0.00 12.16 2.15 2.10 139. w_w_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 140. w_w_csat_0150cm | 8928 8844 99.06 % 0.00 0.03 0.01 0.01 141. w_w_csat_0256cm | 8928 7 0.08 % 0.00 0.35 0.05 0.05 142. w_w_csat_0570cm | 8928 91 1.02 % 0.00 1.42 0.20 0.19 143. w_w_csat_0800cm | 8928 84 0.94 % 0.00 2.69 0.38 0.36 144. w_w_csat_2150cm | 8928 179 2.00 % 0.00 13.48 2.86 2.61 145. wd_ati_1250cm | 8928 141 1.58 % 0.29 359.93 252.80 66.25 146. wd_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 147. wd_csat_0150cm | 8928 8844 99.06 % 14.18 358.86 214.46 90.68 148. wd_csat_0256cm | 8928 7 0.08 % 0.00 359.97 204.85 95.54 149. wd_csat_0570cm | 8928 91 1.02 % 0.13 359.88 229.27 86.16 150. wd_csat_0800cm | 8928 84 0.94 % 0.08 359.99 251.12 77.55 151. wd_csat_2150cm | 8928 179 2.00 % 0.24 359.99 259.11 73.43 152. wd_handar_0161cm | 8928 91 1.02 % 38.81 314.55 203.41 42.66 153. wd_handar_0900cm | 8928 740 8.29 % 10.46 356.80 246.83 48.50 154. wd_rmy_1600cm | 8928 740 8.29 % 0.09 359.99 255.38 69.89 155. wd_rmy_2550cm | 8928 740 8.29 % 0.09 359.92 263.36 70.59 156. wsV_ati_1250cm | 8928 141 1.58 % 0.01 9.99 3.21 2.09 157. wsV_ati_2150cm | 8928 8928 100.00 % NaN NaN NaN NaN 158. wsV_csat_0150cm | 8928 8844 99.06 % 0.05 0.70 0.31 0.13 159. wsV_csat_0256cm | 8928 7 0.08 % 0.00 1.11 0.35 0.19 160. wsV_csat_0570cm | 8928 91 1.02 % 0.00 1.42 0.38 0.22 161. wsV_csat_0800cm | 8928 84 0.94 % 0.01 1.85 0.64 0.38 162. wsV_csat_2150cm | 8928 179 2.00 % 0.04 16.90 6.09 3.90 163. ws_handar_0161cm | 8928 91 1.02 % 0.02 1.82 0.75 0.34 164. ws_handar_0600cm | 8928 8844 99.06 % 0.30 1.18 0.64 0.21 165. ws_handar_0900cm | 8928 824 9.23 % 0.07 8.20 1.78 1.02 166. ws_rmy_1600cm | 8928 5965 66.81 % 0.15 15.37 7.23 2.64 167. ws_rmy_2550cm | 8928 824 9.23 % 0.02 21.69 7.47 4.61 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