DQR ID | Subject | Data Streams Affected |
---|---|---|
D000127.3 | SGP/OKM - Leaf Wetness Index - Sensor doesn't work properly | sgp15okmX1.00, sgp15okmX1.a1 |
D000127.4 | SGP/OKM/X1 - Soil Temperature at 30 cm beneath sod not bare soil | sgp15okmX1.00, sgp15okmX1.a1 |
D000202.3 | SGP/OKM/X1 - Station TULL replaced by station PORT | sgp05okmX1.00, sgp05okmX1.a1, sgp05okmX1.b1, sgp15okmX1.00, sgp15okmX1.a1, sgp15okmX1.b1, sgpokmX1.01 |
D961111.2 | SGP/TWR/C1 - Reprocess: RH recalibration | sgp1440twr25mC1.a0, sgp1440twr60mC1.a0, sgp1twr25mC1.a0, sgp1twr60mC1.a0, sgp30twr25mC1.a1, sgp30twr60mC1.a1 |
D961111.3 | ||
D961210.24 | ||
D961210.27 | ||
D961210.30 | ||
D970323.6 | Overview of Quality Assurance Runs for September 1996 | sgp05okmX1.a1, sgp15okmX1.a1 |
D970909.1 | documentation change for pressure variable | sgp60wpdnsurfX1.b1 |
D990106.1 | SGP/MWR/B1/B4/B6/C1 - software change | sgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0 |
D990113.1 | SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27) | sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0 |
D990124.2 | SGP/SONDE - Dry bias in sonde RH | DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1994 | 0000 | 10/10/1999 | 2359 |
Subject: | SGP/OKM - Leaf Wetness Index - Sensor doesn't work properly |
DataStreams: | sgp15okmX1.00, sgp15okmX1.a1 |
Description: | The measurement leaf_ind (leaf wetness index, measurement of dew ranging from 0 (dry) to 100(wet)) should not be used since Mark Shafer of Oklahoma Mesonet reports that the sensors never worked properly. The new quality assured Oklahoma Mesonet data files sgp15okmX1.b1 will begin with the January 1, 1999 data and will no longer contain this measurement. |
Measurements: | sgp15okmX1.00:
sgp15okmX1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1994 | 0000 | 10/10/1999 | 2359 |
Subject: | SGP/OKM/X1 - Soil Temperature at 30 cm beneath sod not bare soil |
DataStreams: | sgp15okmX1.00, sgp15okmX1.a1 |
Description: | The soil temperature measurement at 30 cm is beneath natural sod rather than beneath bare soil. Unfortunately it is misnamed tbare30 (soil temperature at 30 cm beneath bare soil). The new data streams sgp15okmX1.b1 (which will be provided beginning January 1, 1999) and the data stream sgp15okmX1.a1 (beginning December 1, 1999) both have the name and description corrected. |
Measurements: | sgp15okmX1.00:
sgp15okmX1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1994 | 0000 | 11/05/1999 | 2359 |
Subject: | SGP/OKM/X1 - Station TULL replaced by station PORT |
DataStreams: | sgp05okmX1.00, sgp05okmX1.a1, sgp05okmX1.b1, sgp15okmX1.00, sgp15okmX1.a1, sgp15okmX1.b1, sgpokmX1.01 |
Description: | PORT (Porter) is a station move from TULL (Tullahassee). The landowner was building a house where the Mesonet site stood, so they had to shut down TULL. PORT is another orchard, located about 9 miles west of the TULL site. Station Number: 118 Station ID: PORT Station Name: Porter Nearest Incorporated City: Clarksville 2.5 W County: Wagoner Latitude: 35.8258 degrees N Longitude 95.5600 degrees W Elevation: 193 m Date Commissioned: 1999-11-05 (TULL de-commissioned 1999-11-04) |
Measurements: | sgp15okmX1.b1:
sgp05okmX1.b1:
sgp15okmX1.00:
sgp05okmX1.00:
sgp05okmX1.a1:
sgp15okmX1.a1:
sgpokmX1.01:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/23/1996 | 0000 | 10/21/1996 | 1830 |
Subject: | SGP/TWR/C1 - Reprocess: RH recalibration |
DataStreams: | sgp1440twr25mC1.a0, sgp1440twr60mC1.a0, sgp1twr25mC1.a0, sgp1twr60mC1.a0, sgp30twr25mC1.a1, sgp30twr60mC1.a1 |
Description: | Comparisons of the RH probes with Oklahoma Mesonet probes in the laboratory and comparisons of the RH probes with the EBBR over a four day period after the Water Vapor IOP indicate the TOWER RH probes were incorrectly calibrated. Corrections required are summarized below. 60 meter level: RH data greater than 85% are incorrect for 23 May 1996 through 10 September 2000 GMT. RH data for 10 September 2330 GMT through 13 September 2130 GMT can be corrected with the following equation: -1.6 + 0.955*RH for original RH of 83% or less. Original RH values of greater than 83% cannot be adequately corrected. RH data for 14 September 0000 GMT through 30 September 2000 GMT can be corrected with the equation: -1.6 + 0.87*RH for original RH of 83% or less. Original RH values of greater than 83% cannot be adequately corrected. RH data for 30 September 2030 GMT through 21 October 1830 GMT can be corrected with the equation: 0.3 + 1.107*RH for original RH of 85% or less. Original RH values of greater than 85% cannot be adequately corrected. 25 meter level: RH data greater than 90% are incorrect for 23 May 1996 through 10 September 2000 GMT. RH data for 10 September 0000 GMT through 21 October 1830 GMT can be corrected with the equation: 4.098 + 0.953*RH for original RH of 90% or less. Original RH values of greater than 90% cannot be adequately corrected. Vapor pressure is also incorrect because RH was incorrect. Recalculate vapor pressure from the recalibrated RH. |
Measurements: | sgp30twr25mC1.a1:
sgp1twr60mC1.a0:
sgp1440twr60mC1.a0:
sgp30twr60mC1.a1:
sgp1twr25mC1.a0:
sgp1440twr25mC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/1996 | 0000 | 09/30/1996 | 2359 |
Subject: | Overview of Quality Assurance Runs for September 1996 |
DataStreams: | sgp05okmX1.a1, sgp15okmX1.a1 |
Description: | Review of automated quality assurance runs for September 1996 by Mark Shafer: I noticed a couple of problems you might want to keep an eye out for. The 10-cm soil temperature under sod (TS10) at MARS (Marshall) appeared suspicious the entire month. A trouble ticket was issued at the end of the month (Sep. 24), but I would be cautious with that sensor from at least September 1. The other concern is Pressure (PRES) at BUFF (Buffalo). 10 suspect flags were set by the automated QA on Sep. 18, 5 failures on Sep. 25, and 182 failures plus one suspect flag on Sep. 26. I searched the files I had previously delivered to you (October - January), but did not find a persistent problem. The sensor may have been replaced when the failures were noted on the 26th. Other than these two exceptions, the data appear good. |
Measurements: | sgp05okmX1.a1:
sgp15okmX1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/21/1994 | 0000 | 03/06/1999 | 2359 |
Subject: | documentation change for pressure variable |
DataStreams: | sgp60wpdnsurfX1.b1 |
Description: | The XDC documentation for the pressure variable is incomplete- it reads "pressure" rather than "pressure reduced to sea-level". It has always been sea-level pressure although the provider of the data to the XDC (NCDC) documents it incorrectly as surface pressure. |
Measurements: | sgp60wpdnsurfX1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/03/1995 | 0000 | 10/12/1998 | 1900 |
Subject: | SGP/MWR/B1/B4/B6/C1 - software change |
DataStreams: | sgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0 |
Description: | The MWR operating software was changed on 12 October 1998 to provide additional functionality as described below. This change affects the format of the raw and ingested data. NEW FEATURES 1. Faster sampling rate Standard line-of-sight (LOS) observations can now be acquired at 15-second intervals vs. 20-second intervals previously. (The standard LOS cycle is comprised of one sky sample per blackbody sample and gain update.) 2. More flexible sampling strategy Multiple sky observations can be acquired during a LOS cycle, up to 1024 per gain update. This permits sky samples to be acquired at intervals of 2.67 seconds for improved temporal resolution of cloud liquid water variations and better coordination with the millimeter cloud radar during IOPs. 3. Separation of zenith LOS observations from TIP data When the radiometer is in TIP mode, the zenith LOS observations are now extracted, the PWV and LWP computed and reported separately in the output file. This eliminates the periods of missing LOS data during calibration checks/updates. 4. Automatic self-calibration The software now permits the calibration to be updated at specified intervals or continuously. In the first case, LOS mode is automatically changed to TIP mode at user-specified intervals or whenever clear sky conditions occur, the tip data reduced, the calibration updated ,and the radiometer returned to LOS mode without operator intervention. In the second case, the radiometer is continuously is TIP mode until changed by the operator. 5. Graphical user display The graphical display is comprised of a status display, a message display, a temperature plot, a plot of the retrieved PWV and LWP, and (in TIP mode) a plot of the latest tip curves. Editor's Note: The SGP.C1 data were reprocessed in 2004 and enhancement #3 described above was applied to the data prior to Oct 1998. The SGP.BF data are queued for reprocessing as well. |
Measurements: | sgpmwrtipB1.a0:
sgpmwrlosB1.a1:
sgpmwrlosB4.a0:
sgpmwrlosB6.a0:
sgpmwrlosC1.b1:
sgpmwrtipB6.a0:
sgpmwrlosB1.a0:
sgpmwrtipB4.a0:
sgpmwrlosC1.a1:
sgpmwrlosB4.a1:
sgpmwrlosB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/21/1993 | 1406 | 01/12/1999 | 2359 |
Subject: | SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27) |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0 |
Description: | At 00:00 GMT on 7 January version 3.27 of the MWR operating program was installed and made operational at the SGP central facility (C1). No problems were noted over the next few days and the boundary facility MWRs (B1, B4, B5, B6) were upgraded at 20:00 GMT on 11 January. This version includes a beam width correction I developed as well as providing the capability to automatically level the elevation mirror (that is, to automatically detect and correct offsets in the elevation angle stepper motor position.) On 12 January I discovered that the '486-based MWR computers at B1, B4 and B6 were not executing the system command to move and rename the data files so that the ARM data system could retrieve them. Reducing the length of the storage arrays in the auto-leveling feature from 1000 to 250 resolved the problem. This results in the auto-leveling being based on only 4 hours of clear sky data rather than 16 hours at B5 and C1. This version of the program is 3.28. Version 3.27 (running at B5 and C1) can be installed if and when these computers are upgraded to Pentium-class machines. The improvement in the quality of the tip curves resulting from the auto-leveling has been dramatic: differences in the brightness temperatures at 3 airmasses (19.5 and 160.5 degrees) have been reduced from +/- 5 K to +/- 0.5 K. The goodness-of-fit coefficient for the tip curves has improved from about 0.995 to over 0.998. In order to take full advantage of this improvement to detect and reject cloudy tip curves, the minimum value of the goodness-of-fit coefficient for a valid tip curve has been increased from 0.995 to 0.998. Editor's Note: The SGP.C1 data were reprocessed in 2004 to produce a common DOD for all time. The 1996-1998 data reprocessing included beam width and mirror-leveling corrections, but the data prior to that range did not have these corrections applied. |
Measurements: | sgpmwrtipB1.a0:
sgpmwrlosB5.a1:
sgpmwrtipB5.a0:
sgpmwrlosB1.a1:
sgpmwrlosC1.b1:
sgpmwrtipB6.a0:
sgpmwrtipB4.a0:
sgpmwrlosC1.a1:
sgpmwrlosB4.a1:
sgpmwrlosB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/27/1992 | 0000 | 05/31/2002 | 2359 |
Subject: | SGP/SONDE - Dry bias in sonde RH |
DataStreams: | DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00, DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1, DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, DsgpsondenogcptucalcB1.c1, DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1, DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondeptuB1.00, DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1, DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, sgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1, sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00, sgpsondeC1.a0, sgpsondeC1.a1, sgpsondeptuC1.00, sgpsondewnpnB1.a0, sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0, sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1, sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00, sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00, sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0, sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00, sgpsondewrprC1.a0, sgpsondewrprC1.a1 |
Description: | Vaisala has confirmed ARM findings of an apparent dry bias in the relative humidity measured by RS-80H radiosondes. The cause of the dry bias is thought to be contamination of the humidity sensor by volatile organic substances originating from some plastic parts of the radiosonde. The amount of contamination is a function of the time between the date of sonde manufacture and its use. All RS-80H sondes manufactured before week 34 of 1998 will show this bias. After week 34 of 1998 Vaisala changed its packaging to reduce, but not eliminate the contamination problem. Starting with RS-80 radiosonde manufactured in late June 2000 Vaisala enclosed the sensor boom in an inert plastic shield, thereby eliminating the contamination that caused the dry bias. Starting in May 2001 at the SGP, May 2002 at the TWP, and later 2002 at the NSA, ARM has moved to using RS-90 radiosondes. These sondes are not subject to the contaminatino that caused the dry bias. Vaisala is in the process of developing an algorithm that can be used to estimate the correct RH from knowledge of the sonde age. All of the ARM sounding data have sufficient metadata available to apply the correction. Additionally, ARM has funded a Science Team effort (Milosevich) to develop a 'best' correction algorithm for the RS-80 radiosonde humidity data. When completed this algorithm will allow us to reprocess the accumulated RS-80 data and produce a new data platform with what we hope will be more accurate data. |
Measurements: | sgpsondeB4.00:
DsgpsondeB5.00:
sgpsondewrpnC1.00:
sgpsondewnpnC1.a1:
DsgpsondeptuB6.00:
DsgpsondenogcptucalcB1.c1:
sgpsondewrpnB6.a0:
DsgpsondeptuC1.00:
sgpsondewnprC1.a0:
DsgpsondenogcptucalcB5.c1:
DsgpsondeptucalcC1.c1:
sgpsondewnpnB4.a1:
sgpsondeB6.00:
sgpsondewrprB4.00:
DsgpsondeptuB1.00:
DsgpsondenogcptucalcC1.c1:
sgpsondewrpnC1.a1:
sgpsondewrpnB1.a1:
sgpsondewrprC1.00:
sgpsondewrpnB1.a0:
sgpsondewrprB5.a1:
sgpsondeB5.a1:
sgpsondewrprB5.00:
DsgpsondeC1.00:
sgpsondewrprB1.a1:
sgpsondeB1.00:
sgpsondeptuC1.00:
DsgpsondenogcptucalcB4.c1:
DsgpsondeB1.a0:
DsgpsondeC1.a1:
DsgpsondeptucalcB5.c1:
sgpsondewrprB1.00:
sgpsondewrpnC1.a0:
sgpsondewrpnB1.00:
sgpsondeB1.a0:
DsgpsondeC1.a0:
DsgpsondeB4.a1:
DsgpsondeptuB4.00:
sgpsondeB1.a1:
sgpsondewrprB5.a0:
sgpsondeC1.00:
sgpsondewnpnB1.a1:
sgpsondewrpnB6.a1:
sgpsondewrprC1.a0:
sgpsondeC1.a0:
sgpsondewrprC1.a1:
DsgpsondeptuB5.00:
sgpsondewrpnB5.a0:
sgpsondewrprB4.a1:
DsgpsondeB1.a1:
sgpsondeB5.a0:
sgpsondewnpnB6.a0:
DsgpsondeB5.a1:
DsgpsondenogcwrpnB1.c1:
sgpsondewrprB1.a0:
sgpsondewrpnB5.00:
DsgpsondeB4.a0:
DsgpsondenogcwrpnB4.c1:
DsgpsondeB5.a0:
sgpsondewnpnB4.a0:
sgpsondewnprC1.a1:
sgpsondewrpnB5.a1:
sgpsondewnpnB5.a0:
DsgpsondeB4.00:
sgpsondewrpnB6.00:
sgpsondewrprB4.a0:
sgpsondewnpnB1.a0:
sgpsondeB4.a1:
sgpsondeC1.a1:
sgpsondewrpnB4.00:
DsgpsondenogcwrpnB5.c1:
sgpsondewnpnC1.a0:
sgpsondewrpnB4.a0:
DsgpsondeB1.00:
sgpsondeB4.a0:
sgpsondewnpnB6.a1:
sgpsondewrpnB4.a1:
sgpsondewnpnB5.a1:
DsgpsondeptucalcB4.c1:
DsgpsondenogcwrpnC1.c1:
sgpsondeB5.00:
DsgpsondeptucalcB1.c1:
|