Data set Code--ANA01 Title of Data Set--National Atmospheric Deposition Program Abstract: Data set contains results of chemical analysis of wetfall on Konza Prairie. Analysis done by the Central Analytical Lab (CAL), Champaign, IL as part of the National Atmospheric Deposition Program (NADP). Data is coordinated by the NADP/NTN Coordination Office at Fort Collins, CO. Data products from that office include: Annual Data Summaries, Semiannual Data Reports, Annual and Seasonal Averages, Monthly Averages, and Weekly data. Konza Prairie LTER maintains the weekly data in electronic form (file name NADP in subdirectory nutrient) while other summaries are available via hard copy. Keywords: wetfall, precipitation, precipitation chemistry, NADP, Ca, Mg, K, Na, NH4, NO3, Cl, SO4, PO4, pH, conductance Date data commenced:08/17/82 Date data terminated: / / Principle Investigator: Alan K. Knapp Data Format Specification for NADP/NTN Weekly Data File {The following information comes from NADP/NTN office at Fort Collins, CO.} I. Headings First non-blank line: Program Name NATIONAL ATMOSPERHIC DEPOSTION PROGRAM/ NATIONAL TRENDS NETWORK Columns Format Second non-blank line: Date printed (yrmoda) 1-4 i6 Third and Fourth non-blank lines: Columns headings II. DATA (One data line for each week reported) CAL Code 1-4 c4 Date On (yrmoda) 6-11 i6 Date Off (yrmoda) 13-18 i6 Summ. Per yrmo 20-23 i4 Summ. Per. yrq 25-27 i3 Sample No. 30-34 c5 Limit of Detection symbol (<) for CA 36 c1 Ca concentration 37-42 f6.2 Limit of Detection symbol (<) for Mg 44 c1 Mg concentration 45-51 f7.3 Limit of Detection symbol (<) for K 53 c1 K concentration 54-60 f7.3 Limit of Detection symbol (<) for Na 62 c1 Na concentration 63-69 f7.3 Limit of Detection symbol (<) for NH4 71 c1 NH4 concentration 72-77 f6.2 Limit of Detection symbol (<) for NO3 79 c1 NO3 concentration 80-85 f6.2 Limit of Detection symbol (<) for Cl 87 c1 CI concentration 88-93 f6.2 Limit of Detection symbol (<) for SO4 95 c1 SO4 concentration 96-101 f6.2 Limit of Detection symbol (<) for PO4 103 c1 PO4 concentration 103 f7.3 Lab pH 114-117 f4.2 Field pH 120-123 f4.2 Lab conductance 125-130 f6.1 Field conductance 131-136 f6.1 Sample volume 140-146 f7.1 Precipitation from rain gauge 148-154 f7.2 Sub ppt 157-164 f8.3 Lab type 168-169 c2 Valcode 174-175 c2 Invalcode 180-185 c6 Notes 189-197 c9 DESCRIPTION OF PARAMETERS INCLUDED IN NADP/NTN WEEKLY DATA FILES Cal code Alpha-numeric site identification code, first two characters of which are the abbreviation of the state in which the site is located (Konza Prairie Cal code is KS31) Dates On - Date sample bucket was installed on the collector, reported in Greenwich mean time (GMT), modayr. Off - Data sample bucket was removed from the collector, reported in Greenwich mean time (GMT), modayr. Summ. Per. yrmo - Month in which the sample is included for the purpose of computing weighed-mean concentrations, depositions and precipitation totals given as the year followed by the month (i.e., 8809 for September, 1988) yrq - Quarter in which the sample is included for the purpose of computing weighted-mean concentrations, depositions and precipitation totals, given as the year followed by a numeral indicating the specific seasonal period ( 1=winter, Dec-Feb; 2=spring, Mar-May; 3=summer, June-Aug; 4=fall, Sep-Nov.). Sample No. Sample number assigned by the Laboratory, given as a sequence letter followed by a 4-digit numeral. Ion concentrations Concentrations of Ca, Mg, K, Na, NH4, NO3, Cl, SO4 and PO4 reported in mg/l. Concentrations which are below the detection limit of the analysis are indicated with a “<“ preceding the value; the value reported is the actual limit of the detection. (In cal culating weighted-mean concentrations and depositions NTN substitutes one-half the reported detection limit for concentrations below the limit of detection.) pH pH reported as the negative log of hydrogen ion concentration. lab - pH of the precipitation sample as measured at CAL field - pH of the precipitation sample as measured on site (Bushnell Hall) Conductivity Conductivity reported in microsiemens/cm. lab - conductivity of the precipitation sample as measured at CAL. field - conductivity of the precipitation sample as measured on site (Bushnell Hall). Sample Volume (Svol) Volume of sample captured by the sampler bucket in milliliters. Precipitation from Rain Gauge (RG ppt) Precipitation amount as measured by the rain gauge in millimeters. Trace amounts are indicated by -7.00. Sub ppt Precipitation amount used by NADP/NTN in calculating weighted-mean concentrations, depositions and precipitation totals. In most cases, sub ppt equals the rain gauge reading. Where the rain gage reading is a trace amount, sup ppt is assigned a value of 0 .127mm; in cases where the rain gauge is missing or invalid, sub ppt is calculated by converting the sample volume to its equivalent depth. (The area of the sampler bucket used for this conversion is 678.9 square centimeters.) Lab type A code indicating the condition of the sample upon arrival at CAL w - sample volume of approximately 35 mL or more wa - sample volume less than 35 mL; dilution was required t - trace amount of less than approx. 10 mL; analyses are incomplete da - dry sample qa - quality assurance sample submitted in lieu of a wet-side sample bucket for a week during which no precipitation occurred Valcode A code which indicates whether a sample is considered valid according to NADP/NTN data validations rules. In the case of a valid sample, the code indicates how the sample is used in calculations of weighted-mean concentrations, depositions and data completeness estimates. 0 - invalid sample t - valid trace sample d - valid dry collection period w - valid sample of lave type w wa - valid samples of lab type wa Only samples of w and wa are used by NADP/NTN in calculating weighted-mean concentrations. Invalcode A series of codes assigned to samples which are considered invalid by NADP/NTN for the purposes of computing weighted-mean concentrations, depositions and data completeness estimates. The codes indicate the reason for invalidation. b - bulk sample (Collector was open continuously) u - undefined sample (Collector was open for > 6 hours and less than the entire sampling period when no precipitation was occurring. f - filed protocol departure c - contaminated sample v - inadequate volume for analysis s - short sampling interval (< 6 days) e - extended sampling interval (> 8 days) l - lab error i - incomplete chemical analysis n - no sample collected p - precipitation amount unknown x - reasons other than described above Notes Coded summary of the CAL screening codes and remarks written on the Field Observer Report Form by field personnel, CAL staff, and Coordination Office Staff. bu - bulk sample. Sample was continuously exposed to both wetfall and dryfall. (Collector was open continuously.) na - Results are not yet available (predominantly dry samples). nn - Information was never reported and will never be available. ns - No chemistry data will be reported because of extreme contamination, undefined sampling protocol, leakage, loss in the mail, etc. sp - Samples was collected at a nonapproved sampling site or with nonapproval equipment. .