DQRs for Session: 101521 User:yanCompleted: 09-11-2006

Data Quality Reports for Session: 101521 User: yan Completed: 09/11/2006

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D011211.3	TWP/SMET/C1 - precip, wind, temperature	twpsmet60sC1.a1, twpsmet60sC1.b1
D020109.2	TWP/SMET/C2 - RH Sensor bad at Nauru	twpsmet60sC2.a1, twpsmet60sC2.b1
D020214.9	TWP/SMET/C1 - Sensor replacement	twpsmet60sC1.a1, twpsmet60sC1.b1
D030131.1	TWP/SMET/C2 - Temperature Sensor Failed, Data Missing	twpsmet60sC2.a1, twpsmet60sC2.b1
D030227.3	TWP/SMET/C1 - Reprocess: Miscalibrated windspeed2 data	twpsmet60sC1.a1, twpsmet60sC1.b1
D030317.1	TWP/SMET/C1 - Reprocess: Wind Speed #2 incorrect	twpsmet60sC1.a1, twpsmet60sC1.b1
D030501.5	TWP/SMET/C2 - WIND SENSOR #1 (HIGHER) INOPERATIVE	twpsmet60sC2.b1
D031215.3	TWP/SMET/C1 - Tower Lowered for Cal Activities	twpsmetC1.00, twpsmet60sC1.b1
D040421.1	TWP/SMET/C2 - Wind Sensor failure	twpsmet60sC2.b1
D040428.1	TWP/SMET/C1 - Poor Performing Sensor	twpsmet60sC1.b1
D040722.6	TWP/SMET/C2 - All data missing due to logger change	twpsmet60sC2.b1
D040722.7	TWP/SMET/C2 - connection and timing issues with new logger	twpsmet60sC2.b1
D040726.1	TWP/SMET/C2 - Negative rainfall rates	twpsmet60sC2.b1
D040813.11	TWP/SMET/C1 - RESET14 activities	twpsmet60sC1.a1, twpsmet60sC1.b1
D040824.2	TWP/SMET/C2 - Incorrect rainrate equation used.	twpsmet60sC2.b1
D040824.3	TWP/SMET/C1 - Incorrect rainrate equation used	twpsmet60sC1.b1
D050301.1	TWP/SMET/C2 - Instrument failure	twpsmet60sC2.b1
D050322.2	TWP/SMET/C2 - Upper wind sensor failure	twpsmet60sC2.b1
D050421.6	TWP/SMET/C1 - Negative rainfall rates	twpsmet60sC1.b1
D050601.4	TWP/SMET/C1 - Reprocess: Incorrect Units Listed for Vapor Pressure	twpsmet60sC1.b1
D050601.5	TWP/SMET/C2 - Reprocess: Incorrect Units Listed for Vapor Pressure	twpsmet60sC2.b1
D050714.1	TWP/SMET/C2 - RH failure	twpsmet60sC2.b1
D050920.4	TWP/SMET/C2 - Instrument maintenance	twpsmet60sC2.b1
D050921.2	TWP/SMET/C2 - ORG data incorrect	twpsmet60sC2.b1
D051005.6	TWP/SMET/C2 - Tower down for calibration activities	twpsmet60sC2.b1
D060817.3	TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPa	twpsmet60sC1.b1
D060818.2	TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa	twpsmet60sC2.b1

DQRID : D011211.3

Start Date	Start Time	End Date	End Time
10/23/2001	0445	10/23/2001	0645

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) Max Temperature at lowest Model Level- 1 hr(temp_max) Precipitation mean(precip_mean) Wind #1 speed maximum(wind1_spd_max) Mean Air Temperature or Hardware Error(temp_mean) Temperature standard deviation(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) Min Temperature at lowest Model Level- 1 hr(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) Min Temperature at lowest Model Level- 1 hr(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) Max Temperature at lowest Model Level- 1 hr(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) Temperature standard deviation(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 : D020109.2

Start Date	Start Time	End Date	End Time
12/16/2001	0300	01/03/2002	0841

Subject:	TWP/SMET/C2 - RH Sensor bad at Nauru
DataStreams:	twpsmet60sC2.a1, twpsmet60sC2.b1
Description:	RH sensor bad from 16 Dec 2001 03 GMT to 3 Jan 2002
Measurements:	twpsmet60sC2.b1: Relative humidity mean(relh_mean) Relative humidity maximum(relh_max) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity minimum(relh_min) twpsmet60sC2.a1: Relative humidity minimum(relh_min) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity mean(relh_mean) Relative humidity maximum(relh_max)

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DQRID : D020214.9

Start Date	Start Time	End Date	End Time
10/24/2001	0040	10/24/2001	0100

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) Relative humidity mean(relh_mean) Temperature standard deviation(temp_sd) Relative humidity maximum(relh_max) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Min Temperature at lowest Model Level- 1 hr(temp_min) Max Temperature at lowest Model Level- 1 hr(temp_max) twpsmet60sC1.a1: Min Temperature at lowest Model Level- 1 hr(temp_min) Relative humidity maximum(relh_max) Relative humidity mean(relh_mean) Temperature standard deviation(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) Max Temperature at lowest Model Level- 1 hr(temp_max)

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DQRID : D030131.1

Start Date	Start Time	End Date	End Time
01/24/2003	0100	01/30/2003	0500

Subject:	TWP/SMET/C2 - Temperature Sensor Failed, Data Missing
DataStreams:	twpsmet60sC2.a1, twpsmet60sC2.b1
Description:	The T/RH sensor on Nauru failed and was replaced (only the temperature sensor failed).
Measurements:	twpsmet60sC2.b1: Mean Air Temperature or Hardware Error(temp_mean) Temperature standard deviation(temp_sd) Min Temperature at lowest Model Level- 1 hr(temp_min) Max Temperature at lowest Model Level- 1 hr(temp_max) twpsmet60sC2.a1: Max Temperature at lowest Model Level- 1 hr(temp_max) Mean Air Temperature or Hardware Error(temp_mean) Temperature standard deviation(temp_sd) Min Temperature at lowest Model Level- 1 hr(temp_min)

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DQRID : D030227.3

Start Date	Start Time	End Date	End Time
10/15/2002	0000	02/27/2003	1100

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 Date	Start Time	End Date	End Time
02/27/2003	1750	03/03/2003	1900

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 : D030501.5

Start Date	Start Time	End Date	End Time
04/12/2003	1000	04/24/2003	0020

Subject:	TWP/SMET/C2 - WIND SENSOR #1 (HIGHER) INOPERATIVE
DataStreams:	twpsmet60sC2.b1
Description:	Wind speed sensor #1 (higher sensor) failed. Wind speeds were reported as 0 m/s and wind direction data was not in agreement with wind sensor #2. Anemometer was replaced.
Measurements:	twpsmet60sC2.b1: Wind #1 direction standard deviation(wind1_dir_sd) Wind #1 speed minimum(wind1_spd_min) Wind #1 speed maximum(wind1_spd_max) Wind #1 direction vector average(wind1_dir_vec_avg) 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 vector average(wind1_spd_vec_avg)

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DQRID : D031215.3

Start Date	Start Time	End Date	End Time
12/01/2003	2300	12/02/2003	0300

Subject:	TWP/SMET/C1 - Tower Lowered for Cal Activities
DataStreams:	twpsmetC1.00, twpsmet60sC1.b1
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) Max Temperature at lowest Model Level- 1 hr(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) Relative humidity mean(relh_mean) Temperature standard deviation(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) Min Temperature at lowest Model Level- 1 hr(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: Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D040421.1

Start Date	Start Time	End Date	End Time
04/10/2004	0000	04/24/2004	2303

Subject:	TWP/SMET/C2 - Wind Sensor failure
DataStreams:	twpsmet60sC2.b1
Description:	Wind sensor #2 (lower one) failed. Wind direction showed little or no variation, unlike the colocated sensor #1. This caused lower wind speed values as the sensor was not rotating properly to orient itself parallel to the wind stream. The sensor was replaced.
Measurements:	twpsmet60sC2.b1: Wind #2 speed maximum(wind2_spd_max) Wind #2 speed vector average(wind2_spd_vec_avg) Wind #2 direction standard deviation(wind2_dir_sd) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #2 direction vector average(wind2_dir_vec_avg) Wind #2 speed standard deviation(wind2_spd_sd) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Wind #2 speed minimum(wind2_spd_min)

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DQRID : D040428.1

Start Date	Start Time	End Date	End Time
04/23/2004	0000	01/19/2005	1530

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 : D040722.6

Start Date	Start Time	End Date	End Time
07/06/2004	2003	07/07/2004	0137

Subject:	TWP/SMET/C2 - All data missing due to logger change
DataStreams:	twpsmet60sC2.b1
Description:	All data are missing at this site during this time period due to collection system, logger and enclosure change. Data resumed after change.
Measurements:	twpsmet60sC2.b1: Relative humidity mean(relh_mean) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed standard deviation(wind1_spd_sd) Time offset from base_time(base_time) Max Temperature at lowest Model Level- 1 hr(temp_max) east longitude for all the input platforms.(lon) Wind #2 speed vector average(wind2_spd_vec_avg) Internal Logger Temperature(logger_temp) Bit data. See details.(bit_data) Time offset of tweaks from base_time(time_offset) Wind #2 direction standard deviation(wind2_dir_sd) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Wind #1 speed vector average(wind1_spd_vec_avg) precipitation minimum(precip_min) Wind #2 speed minimum(wind2_spd_min) Vapor pressure mean(vappress_mean) Internal voltage(internal_voltage) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Wind #2 speed maximum(wind2_spd_max) Wind #1 speed minimum(wind1_spd_min) GPS raw data filename(filename) Temperature standard deviation(temp_sd) Min Temperature at lowest Model Level- 1 hr(temp_min) Atmospheric pressure(atmos_pressure) altitude above sea levelaltunits(alt) Relative humidity minimum(relh_min) Wind #2 speed standard deviation(wind2_spd_sd) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Vapor pressure standard deviation(vappress_sd) north latitude for all the input platforms.(lat) Relative humidity maximum(relh_max) Precipitation maximum(precip_max) Wind #1 direction vector average(wind1_dir_vec_avg) External voltage(external_voltage) Wind #2 direction vector average(wind2_dir_vec_avg) Wind #1 speed maximum gust(wind1_spd_max_gust) Precipitation mean(precip_mean) Precipitation standard deviation(precip_sd)

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DQRID : D040722.7

Start Date	Start Time	End Date	End Time
07/07/2004	0138	07/07/2004	2018

Subject:	TWP/SMET/C2 - connection and timing issues with new logger
DataStreams:	twpsmet60sC2.b1
Description:	Atmospheric pressure data are intermittent during this time period due to connection problems and program timing issues with new logger installation. Data resumed normal operations after this time period.
Measurements:	twpsmet60sC2.b1: Atmospheric pressure(atmos_pressure)

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DQRID : D040726.1

Start Date	Start Time	End Date	End Time
10/21/1998	0311	07/06/2004	0138

Subject:	TWP/SMET/C2 - Negative rainfall rates
DataStreams:	twpsmet60sC2.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.
Measurements:	twpsmet60sC2.b1: Precipitation maximum(precip_max) Precipitation mean(precip_mean) precipitation minimum(precip_min) Precipitation standard deviation(precip_sd)

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DQRID : D040813.11

Start Date	Start Time	End Date	End Time
10/09/2001	0000	10/26/2001	2359

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) Max Temperature at lowest Model Level- 1 hr(temp_max) Precipitation mean(precip_mean) Temperature standard deviation(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) Atmospheric 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) Relative humidity mean(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) Min Temperature at lowest Model Level- 1 hr(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) Max Temperature at lowest Model Level- 1 hr(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) Min Temperature at lowest Model Level- 1 hr(temp_min) Vapor pressure standard deviation(vappress_sd) Wind #2 speed maximum(wind2_spd_max) Atmospheric 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) Relative humidity mean(relh_mean) Vapor pressure mean(vappress_mean) Temperature standard deviation(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 : D040824.2

Start Date	Start Time	End Date	End Time
07/07/2004	0137	08/17/2004	2157

Subject:	TWP/SMET/C2 - Incorrect rainrate equation used.
DataStreams:	twpsmet60sC2.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:	twpsmet60sC2.b1: Precipitation maximum(precip_max) Precipitation mean(precip_mean) precipitation minimum(precip_min) Precipitation standard deviation(precip_sd)

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DQRID : D040824.3

Start Date	Start Time	End Date	End Time
08/03/2004	0307	08/17/2004	2138

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 : D050301.1

Start Date	Start Time	End Date	End Time
02/12/2005	1955	03/03/2005	0430

Subject:	TWP/SMET/C2 - Instrument failure
DataStreams:	twpsmet60sC2.b1
Description:	Upper wind sensor failed. Wind direction was reported at a near constant value of 69 degrees and was significantly different than the lower wind sensor's direction values. Sensor replaced.
Measurements:	twpsmet60sC2.b1: Wind #1 direction standard deviation(wind1_dir_sd) Wind #1 direction vector average(wind1_dir_vec_avg)

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DQRID : D050322.2

Start Date	Start Time	End Date	End Time
03/09/2005	2300	04/17/2005	0332

Subject:	TWP/SMET/C2 - Upper wind sensor failure
DataStreams:	twpsmet60sC2.b1
Description:	After replacement on 03/03/2005 the upper wind sensor began reporting erroneous values again on 03/09/2005 becoming very apparent after 03/17/2005. Wind speed data appears reasonable but the wind direction data do not agree well with the lower wind sensor.
Measurements:	twpsmet60sC2.b1: Wind #1 direction standard deviation(wind1_dir_sd) Wind #1 direction vector average(wind1_dir_vec_avg)

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DQRID : D050421.6

Start Date	Start Time	End Date	End Time
10/09/1996	0000	03/09/2004	2243

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 : D050601.4

Start Date	Start Time	End Date	End Time
08/03/2004	0000	05/19/2005	2359

Subject:	TWP/SMET/C1 - Reprocess: Incorrect Units Listed for Vapor Pressure
DataStreams:	twpsmet60sC1.b1
Description:	The netcdf file header incorrectly listed the units of Vapor Pressure as hPa when in fact they were kPa.
Measurements:	twpsmet60sC1.b1: Vapor pressure mean(vappress_mean) Vapor pressure standard deviation(vappress_sd)

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DQRID : D050601.5

Start Date	Start Time	End Date	End Time
07/07/2004	0000	05/19/2005	2359

Subject:	TWP/SMET/C2 - Reprocess: Incorrect Units Listed for Vapor Pressure
DataStreams:	twpsmet60sC2.b1
Description:	The netcdf header file incorrectly listed the units of Vapor Pressure as hPa when in fact they were kPa.
Measurements:	twpsmet60sC2.b1: Vapor pressure standard deviation(vappress_sd) Vapor pressure mean(vappress_mean)

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DQRID : D050714.1

Start Date	Start Time	End Date	End Time
07/10/2005	1900	07/14/2005	2226

Subject:	TWP/SMET/C2 - RH failure
DataStreams:	twpsmet60sC2.b1
Description:	The RH values were frequently over MAX value of 104% starting on 7/10/2005 through end of period. Sensor was replaced.
Measurements:	twpsmet60sC2.b1: Relative humidity mean(relh_mean) Relative humidity maximum(relh_max) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Relative humidity minimum(relh_min)

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DQRID : D050920.4

Start Date	Start Time	End Date	End Time
09/21/2005	1625	09/21/2005	1815

Subject:	TWP/SMET/C2 - Instrument maintenance
DataStreams:	twpsmet60sC2.b1
Description:	Instrument calibration and testing were taking place for brief periods.
Measurements:	twpsmet60sC2.b1: Relative humidity mean(relh_mean) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed standard deviation(wind1_spd_sd) Max Temperature at lowest Model Level- 1 hr(temp_max) Wind #2 speed vector average(wind2_spd_vec_avg) Wind #2 direction standard deviation(wind2_dir_sd) Wind #1 speed vector average(wind1_spd_vec_avg) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Vapor pressure mean(vappress_mean) Wind #2 speed minimum(wind2_spd_min) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Wind #1 speed minimum(wind1_spd_min) Wind #2 speed maximum(wind2_spd_max) Temperature standard deviation(temp_sd) Min Temperature at lowest Model Level- 1 hr(temp_min) Wind #2 speed standard deviation(wind2_spd_sd) Relative humidity minimum(relh_min) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Vapor pressure standard deviation(vappress_sd) Relative humidity maximum(relh_max) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #2 direction vector average(wind2_dir_vec_avg) Wind #1 speed maximum gust(wind1_spd_max_gust)

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DQRID : D050921.2

Start Date	Start Time	End Date	End Time
09/19/2005	0809	09/19/2005	1902

Subject:	TWP/SMET/C2 - ORG data incorrect
DataStreams:	twpsmet60sC2.b1
Description:	Data from the ORG was incorrect due to heavy condensation on the lens.
Measurements:	twpsmet60sC2.b1: Precipitation maximum(precip_max) Precipitation mean(precip_mean) precipitation minimum(precip_min) Precipitation standard deviation(precip_sd)

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DQRID : D051005.6

Start Date	Start Time	End Date	End Time
09/19/2005	0200	09/19/2005	0330

Subject:	TWP/SMET/C2 - Tower down for calibration activities
DataStreams:	twpsmet60sC2.b1
Description:	Tower lowered, wind vanes spun at different frequencies, and ORG tested with electronic rain.
Measurements:	twpsmet60sC2.b1: Relative humidity mean(relh_mean) Wind #1 direction standard deviation(wind1_dir_sd) Mean Air Temperature or Hardware Error(temp_mean) Wind #1 speed maximum(wind1_spd_max) Wind #2 speed maximum gust(wind2_spd_max_gust) Wind #1 speed standard deviation(wind1_spd_sd) Max Temperature at lowest Model Level- 1 hr(temp_max) Wind #2 speed vector average(wind2_spd_vec_avg) Wind #2 direction standard deviation(wind2_dir_sd) Wind #1 speed arithmetic average(wind1_spd_arith_avg) Wind #1 speed vector average(wind1_spd_vec_avg) precipitation minimum(precip_min) Vapor pressure mean(vappress_mean) Wind #2 speed minimum(wind2_spd_min) Std Dev of Relative Humidity or Hardware Error Code(relh_sd) Wind #1 speed minimum(wind1_spd_min) Wind #2 speed maximum(wind2_spd_max) Temperature standard deviation(temp_sd) Min Temperature at lowest Model Level- 1 hr(temp_min) Relative humidity minimum(relh_min) Wind #2 speed standard deviation(wind2_spd_sd) Wind #2 speed arithmetic average(wind2_spd_arith_avg) Vapor pressure standard deviation(vappress_sd) Precipitation maximum(precip_max) Relative humidity maximum(relh_max) Wind #1 direction vector average(wind1_dir_vec_avg) Wind #2 direction vector average(wind2_dir_vec_avg) Wind #1 speed maximum gust(wind1_spd_max_gust) Precipitation mean(precip_mean) Precipitation standard deviation(precip_sd)

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DQRID : D060817.3

Start Date	Start Time	End Date	End Time
10/09/1996	0000	07/13/2006	2225

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: Atmospheric pressure(atmos_pressure)

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DQRID : D060818.2

Start Date	Start Time	End Date	End Time
10/21/1998	0000	07/13/2006	2232

Subject:	TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:	twpsmet60sC2.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:	twpsmet60sC2.b1: Atmospheric pressure(atmos_pressure)

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