DQR ID | Subject | Data Streams Affected |
---|---|---|
D000504.4 | TWP/VCEIL/C1 - Ceilometer offset | twpvceil25kC1.b1 |
D000602.2 | TWP/VCEIL/C1 - Ceilometer clock drift | twpvceil25kC1.00, twpvceil25kC1.a1, twpvceil25kC1.b1 |
D000718.7 | TWP/VCEIL/C1 - Extended data gap | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D000718.8 | TWP/VCEIL/C1 - Extended data gap | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D000718.9 | TWP/VCEIL/C1 - Extended data gap | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D000927.2 | TWP/VCEIL/C1 - Degraded Ceilometer Window | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D010222.1 | TWP/VCEIL/C1 - Receiver Problem | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D020207.1 | TWP/VCEIL/C1 - Manus Ceilometer Laser Power Intermittent | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D020207.2 | TWP/VCEIL/C1 - Reprocess: Incorrect units on installed ceilometer | twpvceil25kC1.a1, twpvceil25kC1.b1 |
D020620.64 | TWP/C1 - Incorrect elevation reported in Manus Data | twpmplC1.a1, twpvceil25kC1.a1, twpvceil25kC1.b1 |
D041013.2 | TWP/VCEIL/C1 - Data dropouts | twpvceil25kC1.00, twpvceil25kC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/28/2000 | 0200 | 03/28/2000 | 0000 |
Subject: | TWP/VCEIL/C1 - Ceilometer offset |
DataStreams: | twpvceil25kC1.b1 |
Description: | When the replacement ceilometer was installed at Manus it was tilted 6 degrees. Since the angle correction setting was not activated, the cloud base heights reported by the instrument were higher than actual by 0.55% (39 m at 7 km). |
Measurements: | twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/1998 | 0000 | 08/22/1998 | 0000 |
Subject: | TWP/VCEIL/C1 - Ceilometer clock drift |
DataStreams: | twpvceil25kC1.00, twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | During this period the ceilometer was using a software version that provided time stamps that were based on the ceilometer clock and not the computer clock that was continually sychronized with GPS. This lead to times that were erroneous by as much as 2 minutes. For most applications 2 minutes is an acceptable error, but for some applications this may be a problem. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.00:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/1996 | 0000 | 02/17/1997 | 0000 |
Subject: | TWP/VCEIL/C1 - Extended data gap |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | There is no ceilometer data for this period. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/05/1997 | 1558 | 04/06/1997 | 0000 |
Subject: | TWP/VCEIL/C1 - Extended data gap |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | There is no ceilometer data for this period. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/1998 | 2058 | 04/19/1998 | 0700 |
Subject: | TWP/VCEIL/C1 - Extended data gap |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | There is no ceilometer data for this period. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1999 | 0000 | 01/28/2000 | 0000 |
Subject: | TWP/VCEIL/C1 - Degraded Ceilometer Window |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | Data from the ceilometer during this period is suspect. From 10/28 until about 2/4 the instrument had a deteriorated window. This caused the ceilometer to only be able to see cloud heights up to about 2 km. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/12/2000 | 0000 | 02/09/2001 | 0000 |
Subject: | TWP/VCEIL/C1 - Receiver Problem |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | The Manus ceilometer had degraded cloud base height due to a receiver problem |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/22/2001 | 0000 | 01/18/2002 | 0500 |
Subject: | TWP/VCEIL/C1 - Manus Ceilometer Laser Power Intermittent |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | Very few cloud heights reported due to bad laser transmitter. Replaced ceilometer 05:00 GMT 18 Jan. 2002. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2002 | 0500 | 02/08/2002 | 0400 |
Subject: | TWP/VCEIL/C1 - Reprocess: Incorrect units on installed ceilometer |
DataStreams: | twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | The units setting on the ceilometer installed on 18 Jan. 2002 were incorrectly set to feet rather than meters. |
Measurements: | twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/1996 | 0801 | 06/22/2000 | 2359 |
Subject: | TWP/C1 - Incorrect elevation reported in Manus Data |
DataStreams: | twpmplC1.a1, twpvceil25kC1.a1, twpvceil25kC1.b1 |
Description: | Bill Clements reports 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: | twpmplC1.a1:
twpvceil25kC1.a1:
twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2004 | 0100 | 11/15/2004 | 1520 |
Subject: | TWP/VCEIL/C1 - Data dropouts |
DataStreams: | twpvceil25kC1.00, twpvceil25kC1.b1 |
Description: | The Manus ceilometer was not receiving complete data packs from the ceilometer. This occurred at irregular intervals up to 3-10 times per hour until an error occurred and the computer locked up. The data were not affected when they were successfully collected. Days on which the data are missing for more than 1 hour are listed below. Some maintenance was done on the ceilometer data computer in November and the computer was ultimately replace on 3 January 2005. year.month.day 2004.09.29 2004.10.03 2004.10.04 2004.10.07 2004.10.10 2004.10.11 2004.10.12 2004.10.13 2004.10.14 2004.10.17 2004.10.18 2004.10.22 2004.10.25 2004.10.26 2004.10.27 2004.10.28 2004.10.29 2004.10.30 2004.11.15 |
Measurements: | twpvceil25kC1.00:
twpvceil25kC1.b1:
|