Data Quality Reports for Session: 111968 User: anuskitade Completed: 05/14/2008


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000302.1TWP/SMET/C1 - Reprocess: Skewed wind direction 1 datatwpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1
D000504.5TWP/SMET/C1 - Wind Direction alignment methodtwpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1
D000621.1TWP/SMET/C1 - Incorrect calibration for ARCS1 Wind speedtwpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1, twpsmetC1.00
D000718.11TWP/SMET/C1 - Periodic spikes in temperature and water vapor pressuretwpsmet60sC1.a1, twpsmet60sC1.b1
D000718.12TWP/SMET/C1 - Elevated relative humiditytwpsmet60sC1.a1, twpsmet60sC1.b1
D010709.15TWP/SMET/C1 - C1 TWP Wind speed calibration factor problem/ Wind1twpsmet60sC1.a1, twpsmet60sC1.b1
D010709.16TWP/SMET/C1 - C1 SMET Incorrect wind speed calibration factorstwpsmet60sC1.a1, twpsmet60sC1.b1
D011211.3TWP/SMET/C1 - precip, wind, temperaturetwpsmet60sC1.a1, twpsmet60sC1.b1
D020214.9TWP/SMET/C1 - Sensor replacementtwpsmet60sC1.a1, twpsmet60sC1.b1
D020620.61TWP/C1 - Incorrect elevation reported in Manus Datatwpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1, twpsmet60sC1.a1, twpsmet60sC1.b1
D030227.3TWP/SMET/C1 - Reprocess: Miscalibrated windspeed2 datatwpsmet60sC1.a1, twpsmet60sC1.b1
D030317.1TWP/SMET/C1 - Reprocess: Wind Speed #2 incorrecttwpsmet60sC1.a1, twpsmet60sC1.b1
D031215.3TWP/SMET/C1 - Tower Lowered for Cal Activitiestwpsmet60sC1.b1, twpsmetC1.00
D040428.1TWP/SMET/C1 - Poor Performing Sensortwpsmet60sC1.b1
D040813.11TWP/SMET/C1 - RESET14 activitiestwpsmet60sC1.a1, twpsmet60sC1.b1
D040824.3TWP/SMET/C1 - Incorrect rainrate equation usedtwpsmet60sC1.b1
D050421.6TWP/SMET/C1 - Negative rainfall ratestwpsmet60sC1.b1
D060522.1TWP/SMET/C1 - Upper wind speed sensor failuretwpsmet60sC1.b1
D060817.3TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC1.b1
D061011.2TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge addedtwpsmet60sC1.b1
D070409.1TWP/SMET/C1 - Upper winds failuretwpsmet60sC1.b1
D980416.33TWP/SMET/C1 - Surface pressure spiketwpsmet60sC1.b1
D990910.2Calibration interruption at TWP Naurutwpsmet60sC1.a1, twpsmet60sC1.b1, twpsmetC2.00


DQRID : D000302.1
Start DateStart TimeEnd DateEnd Time
10/24/1999000011/25/19990450
Subject:
TWP/SMET/C1 - Reprocess: Skewed wind direction 1 data
DataStreams:twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
Wind direction 1 data is incorrect. 
Manus SMET wind direction for Wind-1 (upper unit) was apparently skewed
from its original position as a result of checking direction calibration. 

As near as we can tell the position of the sensor was rotated clockwise
Somewhere in the range of 45-90 degrees, most likely in steps 22.5 degrees.

Data comparison performed on 3-2-00, using a small amount of data from 
this instrument.
Measurements:twpsmet60sC1.b1:
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)

twpsmet60sC1.00:
  • null(Raw data stream - documentation not supported)

twpsmet60sC1.a1:
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 direction standard deviation(wind1_dir_sd)


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DQRID : D000504.5
Start DateStart TimeEnd DateEnd Time
11/25/1999045004/02/20000000
Subject:
TWP/SMET/C1 - Wind Direction alignment method
DataStreams:twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
During RESET10 we discovered a problem with wind direction from WIND1 (upper
anemometer).  During RESET8, WIND1 was corrected by rotating the alignment
ring instead of the anemometer.  This resulted in a better agreement between
the 2 anemometers, but is not the correct way to align an anemometer. The
alignment ring was readjusted for true north and the anemometer reset in
the proper slot (the original problem).
Measurements:twpsmet60sC1.b1:
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)

twpsmet60sC1.00:
  • null(Raw data stream - documentation not supported)

twpsmet60sC1.a1:
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 direction standard deviation(wind1_dir_sd)


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DQRID : D000621.1
Start DateStart TimeEnd DateEnd Time
10/23/1999000004/01/20002359
Subject:
TWP/SMET/C1 - Incorrect calibration for ARCS1 Wind speed
DataStreams:twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1, twpsmetC1.00
Description:
On 23 OCT 99, during Reset 8, an incorrect slope of was entered for the 
upper, windspeed1, wind speed sensor resulting in a 1% overestimate of
the wind speed.  The correct calibration was entered on 1 APR 2000 during
RESET 10.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 speed vector average(wind1_spd_vec_avg)

twpsmetC1.00:
  • null(Raw data stream - documentation not supported)

twpsmet60sC1.00:
  • null(Raw data stream - documentation not supported)

twpsmet60sC1.a1:
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)


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DQRID : D000718.11
Start DateStart TimeEnd DateEnd Time
02/12/1998000005/01/19980000
Subject:
TWP/SMET/C1 - Periodic spikes in temperature and water vapor pressure
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
Beginning on 980212 (day #43) spikes began to occur in the surface
temperature and water vapor pressure.  These spikes occur approximately
once per hour (the spacing is very regular but occasionally an hour
is skipped).  In the one-minute averaged data, the temperature spike
lasts for only one minute and dips approximately 4-5 C below the actual
temperature.  The one-minute standard deviation is more dramatic, rising
from about 0.1 to about 35.  The one minute temperature minimum is the
most easily identifiable, each hour when the spike occurs, the minimum
is -245.84.  The vapor pressure mean jumps from about 30 to over 50 and
the standard deviation jumps from less than 1 to more than 200.  This
problem was fixed by the RESET team on 980501.
Measurements:twpsmet60sC1.b1:
  • Vapor pressure mean(vappress_mean)
  • Temperature minimum(temp_min)
  • Vapor pressure standard deviation(vappress_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Std Dev of Air Temperature(temp_sd)
  • Temperature maximum(temp_max)

twpsmet60sC1.a1:
  • Temperature minimum(temp_min)
  • Vapor pressure standard deviation(vappress_sd)
  • Vapor pressure mean(vappress_mean)
  • Std Dev of Air Temperature(temp_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Temperature maximum(temp_max)


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DQRID : D000718.12
Start DateStart TimeEnd DateEnd Time
11/16/1998000008/12/19990000
Subject:
TWP/SMET/C1 - Elevated relative humidity
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
The relative humidity has been exceeding 100% with unusual regularity.
The most dramatic case occured on December 31 when the RH exceeded 100%
for 18 hours and exceeded 103.5% for 6 hours with a maximum value of
103.8%.  A PIF was submitted to propose changing this sensor. This change
occurred on August 12, 1999.
Measurements:twpsmet60sC1.b1:
  • Relative humidity minimum(relh_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Mean Relative Humidity(relh_mean)
  • Relative humidity maximum(relh_max)

twpsmet60sC1.a1:
  • Relative humidity minimum(relh_min)
  • Relative humidity maximum(relh_max)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Mean Relative Humidity(relh_mean)


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DQRID : D010709.15
Start DateStart TimeEnd DateEnd Time
10/25/1996000003/02/19992359
Subject:
TWP/SMET/C1 - C1 TWP  Wind speed calibration factor problem/ Wind1
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
Wind speed calibration factors were reversed between wind speed sensor 1 and 2.
Results in less than 1% error, but correction factors may be used.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)

twpsmet60sC1.a1:
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)


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DQRID : D010709.16
Start DateStart TimeEnd DateEnd Time
10/25/1996000003/02/19990000
Subject:
TWP/SMET/C1 - C1 SMET Incorrect wind speed calibration factors
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
Wind speed calibration factors were reversed between wind speed sensors 1 and 2.  Error 
results in less than a 1% error in wind speed.  A correction factor may be used.
Measurements:twpsmet60sC1.b1:
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed standard deviation(wind2_spd_sd)

twpsmet60sC1.a1:
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)


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DQRID : D011211.3
Start DateStart TimeEnd DateEnd Time
10/23/2001044510/23/20010645
Subject:
TWP/SMET/C1 - precip, wind, temperature
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
On 10/23/01 from 4:45 to 6:45 precipitation, wind, and temperature measurements were 
directly affected by RESET14 visit activities.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed maximum(wind2_spd_max)
  • Temperature maximum(temp_max)
  • Precipitation mean(precip_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Std Dev of Air Temperature(temp_sd)
  • precipitation minimum(precip_min)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Precipitation maximum(precip_max)
  • Temperature minimum(temp_min)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)

twpsmet60sC1.a1:
  • Precipitation mean(precip_mean)
  • Temperature minimum(temp_min)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #2 speed maximum(wind2_spd_max)
  • Precipitation maximum(precip_max)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Temperature maximum(temp_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • precipitation minimum(precip_min)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Std Dev of Air Temperature(temp_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #1 speed minimum(wind1_spd_min)


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DQRID : D020214.9
Start DateStart TimeEnd DateEnd Time
10/24/2001004010/24/20010100
Subject:
TWP/SMET/C1 - Sensor replacement
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
On 10/24/01 from 00:40 to 01:00 the T/RH probe was being replaced.
Measurements:twpsmet60sC1.b1:
  • Relative humidity minimum(relh_min)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Mean Relative Humidity(relh_mean)
  • Std Dev of Air Temperature(temp_sd)
  • Relative humidity maximum(relh_max)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Temperature minimum(temp_min)
  • Temperature maximum(temp_max)

twpsmet60sC1.a1:
  • Temperature minimum(temp_min)
  • Relative humidity maximum(relh_max)
  • Mean Relative Humidity(relh_mean)
  • Std Dev of Air Temperature(temp_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Relative humidity minimum(relh_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Temperature maximum(temp_max)


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DQRID : D020620.61
Start DateStart TimeEnd DateEnd Time
10/10/1996000106/22/20002359
Subject:
TWP/C1 - Incorrect elevation reported in Manus Data
DataStreams:twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1, twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
(From Bill Clements) We have been using 6m MSL as the station
elevation of Momote (Manus).  This was based on information
posted near the station barometer in the Momote Weather Service
Office.  It turns out that the official WMO station elevation
for Momote is 4m MSL and the upper air elevation is 5m MSL.

All Manus instruments except the sonde station are at 4m MSL.
The sonde launching station is at 5m MSL.
Measurements:twpgndrad20sC1.a1:
  • Dummy altitude for Zeb(alt)

twpgndrad60sC1.b1:
  • Dummy altitude for Zeb(alt)

twpsmet60sC1.b1:
  • Dummy altitude for Zeb(alt)

twpgndrad60sC1.a1:
  • Dummy altitude for Zeb(alt)

twpsmet60sC1.a1:
  • Dummy altitude for Zeb(alt)


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DQRID : D030227.3
Start DateStart TimeEnd DateEnd Time
10/15/2002000002/27/20031100
Subject:
TWP/SMET/C1 - Reprocess: Miscalibrated windspeed2 data
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
A replacement anemometer (WSP2) was installed but the new anemometer calibration 
coefficients were not put into the logger. The multiplication factor was 0.09708 when it should 
have been 0.09763 (very small difference)the offset was 0.36 when it should have been 0.3 
(a difference 0.06 m/s).
Measurements:twpsmet60sC1.b1:
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)

twpsmet60sC1.a1:
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)


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DQRID : D030317.1
Start DateStart TimeEnd DateEnd Time
02/27/2003175003/03/20031900
Subject:
TWP/SMET/C1 - Reprocess: Wind Speed #2 incorrect
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
Wind Speed #2 sensor was reporting values 10 times above the actual value.  During an 
update to the logger configuration file the calibration multiplier was incorrectly entered.  
The multiplier inserted was .97630 when it should have been .09763.  This caused the 
readings from this sensor to be incorrect.
Measurements:twpsmet60sC1.b1:
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed standard deviation(wind2_spd_sd)

twpsmet60sC1.a1:
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)


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DQRID : D031215.3
Start DateStart TimeEnd DateEnd Time
12/01/2003230012/02/20030300
Subject:
TWP/SMET/C1 - Tower Lowered for Cal Activities
DataStreams:twpsmet60sC1.b1, twpsmetC1.00
Description:
Tower lowered for instrument calibration
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Vapor pressure mean(vappress_mean)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Precipitation standard deviation(precip_sd)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Temperature maximum(temp_max)
  • Precipitation mean(precip_mean)
  • Relative humidity minimum(relh_min)
  • Wind #1 speed maximum(wind1_spd_max)
  • Vapor pressure standard deviation(vappress_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Mean Relative Humidity(relh_mean)
  • Std Dev of Air Temperature(temp_sd)
  • precipitation minimum(precip_min)
  • Relative humidity maximum(relh_max)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Precipitation maximum(precip_max)
  • Temperature minimum(temp_min)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 speed vector average(wind1_spd_vec_avg)

twpsmetC1.00:
  • null(Raw data stream - documentation not supported)


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DQRID : D040428.1
Start DateStart TimeEnd DateEnd Time
04/23/2004000001/19/20051530
Subject:
TWP/SMET/C1 - Poor Performing Sensor
DataStreams:twpsmet60sC1.b1
Description:
On 4/23/2004 condensation was found inside the target area of the ORG lens. A spare was 
sent and installed but did not solve the problem of high background voltage values causing 
rainrate values to be recorded during no rainfall.  Values range anywhere from 0.06 to 
0.12 mm/hr.  

A new Optical Rain Gage was installed on 01/19/2005 @ 13:30 GMT alleviating the high 
background voltage values that lead to consistent rainfall rates of around 0.11 to 0.15 mm/hr 
on a consistent basis.  

The formula used to calculate rainfall rates from the new Optical Rain Gage is:  RR 
(mm/hr) = 25(V^1.87) - 0.15.

Older model formula = 20(V^2) - 0.05

The two formulas result in comparable data.
Measurements:twpsmet60sC1.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D040813.11
Start DateStart TimeEnd DateEnd Time
10/09/2001000010/26/20012359
Subject:
TWP/SMET/C1 - RESET14 activities
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1
Description:
RESET14 activities may have affected data in subtle ways during this
period.
Measurements:twpsmet60sC1.b1:
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Temperature maximum(temp_max)
  • Precipitation mean(precip_mean)
  • Std Dev of Air Temperature(temp_sd)
  • precipitation minimum(precip_min)
  • Relative humidity maximum(relh_max)
  • Precipitation maximum(precip_max)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Vapor pressure mean(vappress_mean)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed maximum(wind2_spd_max)
  • Barometric Pressure(atmos_pressure)
  • Relative humidity minimum(relh_min)
  • Wind #1 speed maximum(wind1_spd_max)
  • Vapor pressure standard deviation(vappress_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Mean Relative Humidity(relh_mean)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Temperature minimum(temp_min)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)

twpsmet60sC1.a1:
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Precipitation maximum(precip_max)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Temperature maximum(temp_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Relative humidity minimum(relh_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #1 speed minimum(wind1_spd_min)
  • Precipitation mean(precip_mean)
  • Temperature minimum(temp_min)
  • Vapor pressure standard deviation(vappress_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Barometric Pressure(atmos_pressure)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • precipitation minimum(precip_min)
  • Relative humidity maximum(relh_max)
  • Mean Relative Humidity(relh_mean)
  • Vapor pressure mean(vappress_mean)
  • Std Dev of Air Temperature(temp_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed standard deviation(wind2_spd_sd)


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DQRID : D040824.3
Start DateStart TimeEnd DateEnd Time
08/03/2004030708/17/20042138
Subject:
TWP/SMET/C1 - Incorrect rainrate equation used
DataStreams:twpsmet60sC1.b1
Description:
There are two different Optical Raingages in use at the TWP sites.  The incorrect equation 
was used at this site.  The incorrect equation is (25*(V^1.87)) - 0.15.
The correct equation is (20*(V^2)) - 0.05.  The correct equation was installed.
Measurements:twpsmet60sC1.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D050421.6
Start DateStart TimeEnd DateEnd Time
10/09/1996000003/09/20042243
Subject:
TWP/SMET/C1 - Negative rainfall rates
DataStreams:twpsmet60sC1.b1
Description:
Due to limitations of the Zeno dataloggers all voltage measurements
from the optical rain gauge (ORG) were converted to rainfall rates. 
This resulted in negative values for rain rates.  Any value below 0.10 mm/hr should be 
considered to be 0 mm/hr.  New dataloggers 
alleviated this problem.  New loggers were installed 03/09/2004 @ 2243 GMT.
Measurements:twpsmet60sC1.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D060522.1
Start DateStart TimeEnd DateEnd Time
05/09/2006000010/14/20060237
Subject:
TWP/SMET/C1 - Upper wind speed sensor failure
DataStreams:twpsmet60sC1.b1
Description:
The upper wind speed sensor was binding at low wind speeds.  Comparison to the lower wind 
sensor showed that the upper sensor flat-lines for long periods of time.  The upper 
anemometer was replaced.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)


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DQRID : D060817.3
Start DateStart TimeEnd DateEnd Time
10/09/1996000007/13/20062225
Subject:
TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC1.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC1.b1:
  • Barometric Pressure(atmos_pressure)


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DQRID : D061011.2
Start DateStart TimeEnd DateEnd Time
10/09/1996000010/17/20060000
Subject:
TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added
DataStreams:twpsmet60sC1.b1
Description:
A tipping bucket rain gauge was added to the TWP.C1 SMET suite of instruments on 20061017. 
 Effective 20060926, two new variables (count and rain amount) were added to the end of 
the twpsmet60sC1.b1 datastream.  Between 9/26 and 10/17, the data for these two variables 
are filled with zeros.  Users should not use the data during this period as the zeros 
are not representative of the rain fall at the site.  When reprocessing of this datastream 
occurs these variables will be added for the 19961009-20060926 and data from 
19961009-20061017 will be filled with -9999 (missing).
Measurements:twpsmet60sC1.b1:
  • base time(base_time)


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DQRID : D070409.1
Start DateStart TimeEnd DateEnd Time
03/19/2007000006/12/20070406
Subject:
TWP/SMET/C1 - Upper winds failure
DataStreams:twpsmet60sC1.b1
Description:
The upper wind instrument was inoperative resulting in constant wind direction and speed.  
A failed cable was replaced.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)


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DQRID : D980416.33
Start DateStart TimeEnd DateEnd Time
09/04/1997024909/04/19970304
Subject:
TWP/SMET/C1 - Surface pressure spike
DataStreams:twpsmet60sC1.b1
Description:
A spike occured in the surface pressure.  The reported pressure rose as
high as 1300 hPa but returned to normal levels after 15 minutes.
Measurements:twpsmet60sC1.b1:
  • Barometric Pressure(atmos_pressure)


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DQRID : D990910.2
Start DateStart TimeEnd DateEnd Time
08/09/1999003008/11/19990300
Subject:
Calibration interruption at TWP Nauru
DataStreams:twpsmet60sC1.a1, twpsmet60sC1.b1, twpsmetC2.00
Description:
Occasional calibration interuption occured while calibration SMET instruments
Measurements:twpsmet60sC1.b1:
  • Battery Voltage(internal_voltage)
  • base time(base_time)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Logger panel temperature(logger_temp)
  • lon(lon)
  • External voltage(external_voltage)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • lat(lat)
  • Temperature maximum(temp_max)
  • Precipitation mean(precip_mean)
  • Std Dev of Air Temperature(temp_sd)
  • precipitation minimum(precip_min)
  • Relative humidity maximum(relh_max)
  • Time offset of tweaks from base_time(time_offset)
  • Precipitation maximum(precip_max)
  • Bit data. See details.(bit_data)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Dummy altitude for Zeb(alt)
  • Vapor pressure mean(vappress_mean)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • Precipitation standard deviation(precip_sd)
  • GPS raw data filename(filename)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed maximum(wind2_spd_max)
  • Barometric Pressure(atmos_pressure)
  • Relative humidity minimum(relh_min)
  • Wind #1 speed maximum(wind1_spd_max)
  • Vapor pressure standard deviation(vappress_sd)
  • Mean Relative Humidity(relh_mean)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Temperature minimum(temp_min)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)

twpsmetC2.00:
  • null(Raw data stream - documentation not supported)

twpsmet60sC1.a1:
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Precipitation maximum(precip_max)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Dummy altitude for Zeb(alt)
  • Temperature maximum(temp_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Relative humidity minimum(relh_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #1 speed minimum(wind1_spd_min)
  • GPS raw data filename(filename)
  • Logger panel temperature(logger_temp)
  • Bit data. See details.(bit_data)
  • Precipitation mean(precip_mean)
  • base time(base_time)
  • Temperature minimum(temp_min)
  • Vapor pressure standard deviation(vappress_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Barometric Pressure(atmos_pressure)
  • Time offset of tweaks from base_time(time_offset)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 speed minimum(wind2_spd_min)
  • precipitation minimum(precip_min)
  • Relative humidity maximum(relh_max)
  • Vapor pressure mean(vappress_mean)
  • Mean Relative Humidity(relh_mean)
  • lon(lon)
  • Std Dev of Air Temperature(temp_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • External voltage(external_voltage)
  • Battery Voltage(internal_voltage)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • lat(lat)


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