Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
07/01/1998 | 0000 | 07/31/1998 | 2359 | Does not affect quality |
Subject: | Overview of Automated QA - July 1998 |
DataStreams: | sgp05okmX1.00, sgp15okmX1.00, sgp15okmX1.a1, sgp05okmX1.a1 |
Description: | Below is an overview from Chris Fiebrich, the Mesonet QA manager of the automated quality assurance results for the July 1998 Oklahoma Mesonet data. The soil temperature data was the hardest set of parameters to quality assure for this time period. As we well remember, July was extremely hot and dry across the state. The soil temperatures under native sod caused the most problems. Many SOD plots essentially became BARE plots as vegetation slowly provided less and less insulation from the heat. This caused the automatic spatial QA to flag a number of stations during the hot afternoons. These stations include: MANG TS05, NORM TS05, TIPT TS05/TS10, FTCB TS05/TS10/TS30, and BRIS TS05. We believe that these sensors are ok, and did not include them in our badparm table. However, you may notice some 'suspect' flags on them from the automatic QA. There are a few additional special events that were flagged by the automatic qa that you may want to be aware of. These include: 1. BOIS RELH - (July 1) flags were caused by a wet sensor; the flags are correct and there is no need for continuning concern after the event. 2. BOWL and MTHE TAIR - (July 2) Thunderstorm outflow caused these sites to be spatially off with respect to neighboring sites. You can ignore the flags. 3. MINC WSPD/WVEC/WMAX and PAWN WMAX - (July 8) Strong thunderstorms produced wind gusts over 40 mph at these sites. We believe this data to be correct, and you can ignore the flags. 4. MAYR TAIR/WSPD - (July 10) Thunderstorms caused these flags. Disregard the flags. 5. CAMA SRAD - (July 17 through July 31) Lightning occurred at the site on July 17. Ever since then, the solar radiation has been reporting slightly negative readings overnight (usually -1). Otherwise, the data is fine, and you can disregard the flags. 6. ARNE RELH/TAIR - (July 24 and 26) Thunderstorm outflow caused this site to be spatially inconsistent with neighboring sites. You can disregard the flags. 7. BREC TAIR - (July 25) Thunderstorm outflow cooled this site down and caused the QA flags. You can ignore the flags. -Chris =========================================================================== == OKLAHOMA MESONETWORK/ARS QUALITY ASSURANCE REPORT for the month of July, 1998 Based upon observations taken at 1800 UTC each day Prepared by Chris Fiebrich (chris@mesnet.mesonet.ou.edu) =========================================================================== ===== Soil temperature sensors have been the hardest to quality assure over the past month. Due to the daily occurrence of many soil sensors reaching 50+ C (for the first time in the Mesonet's history!), we raised the maximum range on the 5 cm bare and sod sensors to 55 C. The prescence of dry, cracked ground in many locations has also contributed to much greater than normal variations in the observed soil temperatures at neighboring sites. The hotspot: The monthly-averaged Air Temperature field for 1800 UTC revealed Walters, OK as the hottest location. WALT's average 1800 UTC temperature was 37.3 C (99.1 F). Not only did WALT have the highest average 1800 UTC temperature, but the average high at WALT for the month was 104.7! (thanks for that fact, Derek). And now, on to the report... =========================================================================== ===== TAIR Current: #1974 SPEN Reporting 5-10 F too warm Added: None Resolved: #1961 WOOD Lightning strike; replaced sensor #1897 MCAL Replaced sensor with frequent -7999 reports RELH Current: #1814 MARS Sensor reporting as high as 110% Added: None Resolved: #1872 KETC Replaced sensor with extended 0% RELH reports #1948 WOOD Replaced lightning-damaged sensor #1900 MARE Replaced sensor that reported 20-30% dips #1810 KING Large spider web removed from cap #1968 WIST Replaced sensor reporting data spikes daily #1731 CLAY Replaced sensor with frequent -7999 reports WDIR Current: None Added: None Resolved: #1901 OKMU Replaced sensor reporting ~80 out of phase #1964 CAMA Replaced lightning-damaged sensor #1966 WOOD Replaced lightning-damaged sensor #1951 CLAY Replacing CR10T corrected continuous 0.0 WDIR reports WSPD Current: #1913 SPEN Low wind gusts during severe storm event Added: None Resolved: #1967 WOOD Replaced sensor to correct high bias WSPD reports PRES Current: None Added: None Resolved: #1877 ALVA Replaced malfunctioning sensor #1915 SKIA Replaced sensor suspect of 1.0 mb high bias #1916 BUTL Replaced sensor suspect of 1.0 low bias SRAD Current: #1839 HOOK Reporting -1 for extended periods at night #1965 IDAB Sensor reporting ~500f expected values Added: #1987 OKMU Sensor reporting ~150 W/M^2 low during pm Resolved: #1843 GRAN Sensor began reporting normal values after being rain-washed #1960 CAMA Replaced lightning-damaged sensor #1963 WOOD Replaced lightning-damaged sensor #1903 CHAN "Deep" bird droppings removed which shaded sensor #1917 KING "Large" bird droppings removed which shaded sensor RAIN Current: #1972 CHEY Sensor suspected of over-reporting rainfall #1984 MIAM Sensor suspected of under-reporting rainfall Added: None Resolved: #1954 CALV Irrigation system on nearby farm causing rainfall reports. TA9M Current: None Added: #1989 HUGO Monthly QA suggests 2 C cool bias Resolved: None WS2M Current: None Added: None Resolved: #1952 CLAY New CR10T corrected continuous 0.0 WS2M reports TS10 Current: None Added: None Resolved: None TB10 Current: #1779 WILB Monthly QA suggests 4 C cool bias #1970 NINN Sensor reporting 8 C cooler than neighbors Added: None Resolved: #1959 FTCB Erosion at site caused readings too warm TS05 Current: #1847 SHAW Data suggests 3-6 C cool bias Added: #1988 EUFA TB05 reporting cooler than TB10 Resolved: #1846 KETC Suspected cool bias found to be not true TB05 Current: #1808 WOOD Monthly QA suggests possible 4 C warm bias #1878 PAUL Sensor reporting values below 0 C #1899 IDAB Sensor reporting over 50 C #1971 NINN Sensor reporting 8-10 C cooler than neighbors Added: None Resolved: #1845 KETC Sensor found to have ~3 C warm bias #1958 FTCB Erosion at site caused readings too warm TS30 Current: #1956 SHAW Data suggests TS05 and TS30 wires are crossed Added: None Resolved: None --------------------------------------------------------------------------- ---- ARS QA REPORT --------------------------------------------------------------------------- ---- TAIR Current: None Added: None Resolved: None RELH Current: None Added: None Resolved: #1947 A151 Sensor found out of calibration replaced #1928 A110 Replaced sensor that failed meso-comparison SRAD Current: None Added: None Resolved: None RAIN Current: None Added: None Resolved: None TS05 Current: #1924 A157 Awaiting new sensor after site move Added: None Resolved: #1919 A160 Sensor found to be 13 C too high #1918 A159 Sensor found to be 4 C too high #1920 A156 Sandy soil found to be cause of warm bias TS10 Current: #1927 A157 Awaiting new sensor after site move Added: None Resolved: None TS15 Current: #1926 A157 Awaiting new sensor after site move #1957 A146 Sensor reporting sporadically to -10 C Added: None Resolved: None TS30 Current: #1925 A157 Awaiting new sensor after site move Added: None Resolved: None =========================================================================== === LEGEND TAIR Air Temperature measured at 1.5 meters RELH Relative Humidity measured at 1.5 meters WDIR Wind Direction measured at 10 meters WSPD Wind Speed measured at 10 meters PRES Pressure SRAD Incident Solar Radiation RAIN Rainfall TA9M Air Temperature measured at 9 meters WS2M Wind Speed measured at 2 meters TS10 Soil Temperature measured at 10 cm under native sod TB10 Soil Temperature measured at 10 cm under bare soil TS05 Soil Temperature measured at 5 cm under native sod TB05 Soil Temperature measured at 5 cm under bare soil TS15 Soil Temperature measured at 15 cm under native sod TS30 Soil Temperature measured at 30 cm under native sod =========================================================================== === Chris Fiebrich August 10, 1998 |
Suggestions: | Users of these data should obtain the detailed quality assurance information from ARM |
Measurements: | sgp05okmX1.a1: more
sgp05okmX1.00: more sgp15okmX1.a1: more sgp15okmX1.00: more |