TWP/TSI/C3 - Missing data due to Mentor Activities

Darwin TSI on-board image collection and processing
had been turned off for Instrument Mentor to make
fine tuning adjustments. Mentor then forgot to turn
the on-board image collection and processing back
on.  All data for this time period is missing and
unrecoverable.

• alt
• lat
• count.opaque
• count.box
• count.sub.horz
• region.sun.count.thin
• region.horizon.count
• region.sun.count.opaque
• count.unknown
• solar.altitude
• base_time
• sun.strength
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin
• count.mask
• region.sun.count
• Cloud amount, opaque (percent)(percent.opaque)
• solar.azimuth
• region.zenith.count.opaque
• region.horizon.count.thin
• region.zenith.count
• count.sky
• Sunshine Meter(sunny)
• count.thin
• lon
• region.horizon.count.opaque
• count.sub.proczen
• time_offset

• region.zenith.count
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• solar.altitude
• count.box
• count.opaque
• count.sky
• solar.azimuth
• count.sub.proczen
• count.sub.horz
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• lat
• Cloud amount, thin (percent)(percent.thin)
• region.sun.count.opaque
• count.thin
• alt
• lon
• region.zenith.count.opaque
• region.horizon.count.thin
• base_time
• count.mask
• region.sun.count.thin

• Raw data stream - documentation not supported

• JPEG data stream - documentation not yet available

TWP/TSI/C2 - Metadata Errors in NetCDF Header

The value of "sample_int" reported in the netCDF header is
incorrect.  The correct sampling interval is 30 seconds.

The maximum values for the variable "sunny" is incorrect.  
It should be 1, not 100 as documented in the netCDF header. 
Users should disregard the "qc_sunny" flag during this
period of time and apply their own qc check if desired.

The minimum value for the variable "solar.altitude" is
incorrect. It should be -90, not 10 as documented in the
netCDF header.  Users should disregard the "qc_solar.altitude"
flag during this period of time and apply their own qc check
if desired.

• time_offset
• solar.altitude
• Sunshine Meter(sunny)

• time_offset

TWP/TSI/C3 - Metadata Errors in NetCDF Header

The value of "sample_int" reported in the netCDF header is
incorrect.  The correct sampling interval is 30 seconds.

The maximum values for the variable "sunny" is incorrect.  
It should be 1, not 100 as documented in the netCDF header. 
Users should disregard the "qc_sunny" flag during this
period of time and apply their own qc check if desired.

The minimum value for the variable "solar.altitude" is
incorrect. It should be -90, not 10 as documented in the
netCDF header.  Users should disregard the "qc_solar.altitude"
flag during this period of time and apply their own qc check
if desired.

• time_offset

• time_offset
• solar.altitude
• Sunshine Meter(sunny)

TWP/TSI/C2 - Power outage in I-Van resulted in Missing Data

I forgot to put in the daily report that we took the I van down yesterday to replace the 
fans
in the Clary UPS. This was from 2300z on 24May03 to 0010z on 25May03. Instruments affected 
:

MPL
Ceilometer
MWR
WSI
TSI

Rex

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• solar.altitude
• region.zenith.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• alt
• count.sub.horz
• count.sky
• lon
• region.horizon.count.thin
• region.sun.count
• time_offset
• region.horizon.count
• base_time
• region.zenith.count
• count.thin
• region.sun.count.thin
• lat
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin
• count.box
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• count.mask
• count.opaque
• count.unknown
• solar.azimuth

• JPEG data stream - documentation not yet available

• count.sub.horz
• solar.azimuth
• lat
• count.sky
• count.sub.proczen
• region.horizon.count.thin
• count.thin
• base_time
• region.horizon.count.opaque
• count.unknown
• count.box
• region.sun.count
• region.zenith.count.thin
• region.sun.count.thin
• Cloud amount, thin (percent)(percent.thin)
• Sunshine Meter(sunny)
• region.zenith.count.opaque
• region.zenith.count
• count.mask
• alt
• solar.altitude
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• lon
• sun.strength
• time_offset

• Raw data stream - documentation not supported

TWP/TSI/C2 - Shadowband misalignment

The shadowband and mask were initially misaligned after the re-installation of the TSI.

• Cloud decision images, Total Sky Imager, PNG format(png)

• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin
• count.box
• count.sub.horz
• count.sky
• region.horizon.count.thin
• region.sun.count
• region.horizon.count.opaque
• region.horizon.count
• count.mask
• count.opaque
• count.unknown

• JPEG data stream - documentation not yet available

• count.sub.horz
• count.sky
• count.sub.proczen
• count.thin
• region.horizon.count.thin
• region.zenith.count.opaque
• count.mask
• region.zenith.count
• region.horizon.count.opaque
• count.unknown
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.box
• region.sun.count
• region.zenith.count.thin
• count.opaque
• region.sun.count.thin
• Cloud amount, thin (percent)(percent.thin)

• Raw data stream - documentation not supported

TWP/TSI/C1 - mirror continuously spinning

The mirror and associated shadowband went into a mode of continuously spinning, sometimes 
clockwise and sometimes counterclockwise, so the sun was not blocked.

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• count.sky
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• region.sun.count.opaque
• region.sun.count
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• count.mask

TWP/TSI/C1 - shadowband not moving

The shadowband was stuck in a position at about 215 degrees.

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• count.sky
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• region.sun.count.opaque
• region.sun.count
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• count.mask

TWP/TSI/C2 - Missing Data: Instrument Failure

The TWP.C2 TSI failed 12/22/03.  Repeated attempts to fix it were
unsuccessful.  The instrument was removed from service for system
modifications.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• solar.altitude
• region.zenith.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• alt
• count.sub.horz
• count.sky
• lon
• region.horizon.count.thin
• region.sun.count
• time_offset
• region.horizon.count
• base_time
• region.zenith.count
• count.thin
• region.sun.count.thin
• lat
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.box
• region.zenith.count.thin
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• count.mask
• count.opaque
• count.unknown
• solar.azimuth

• JPEG data stream - documentation not yet available

• count.sub.horz
• solar.azimuth
• lat
• count.sky
• count.sub.proczen
• region.horizon.count.thin
• count.thin
• base_time
• region.horizon.count.opaque
• count.unknown
• count.box
• region.sun.count
• region.zenith.count.thin
• region.sun.count.thin
• Cloud amount, thin (percent)(percent.thin)
• Sunshine Meter(sunny)
• region.zenith.count.opaque
• region.zenith.count
• count.mask
• alt
• solar.altitude
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• lon
• sun.strength
• time_offset

• Raw data stream - documentation not supported

TWP/TSI/C3 - poor images

The resolution of TSI images were very poor and the colors were wrong.  The clear sky 
appeared a reddish-brown during the day causing the processed image to be 100% opaque. The 
problem was corrected when the instrument was power cycled.

• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• count.sub.proczen
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• region.zenith.count
• count.sub.horz
• count.box
• count.opaque
• region.zenith.count.opaque
• count.unknown
• count.sky
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• sun.strength
• count.mask
• region.sun.count
• region.sun.count.thin
• Sunshine Meter(sunny)

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C3 - camera failure

The TSI image was out of focus due to condensation on the camera lens and PC board that 
led to camera failure. The problem was corrected by replacing the camera with a spare and 
adjusting the shadowband.

• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.sub.proczen
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• region.zenith.count
• count.sub.horz
• count.box
• region.zenith.count.opaque
• count.opaque
• count.unknown
• count.sky
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• region.sun.count.thin
• region.sun.count
• count.mask

• JPEG data stream - documentation not yet available

TWP/TSI/C2 - initial configuration

When the TSI-660 was deployed, there were several days of initial adjustments to the 
shadowband alignment and sky filter.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• region.zenith.count
• solar.altitude
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• lat
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• alt
• count.box
• region.zenith.count.thin
• count.sub.horz
• count.sky
• lon
• region.horizon.count.thin
• region.sun.count
• time_offset
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• region.horizon.count
• count.mask
• count.opaque
• count.unknown
• base_time
• solar.azimuth

• JPEG data stream - documentation not yet available

TWP/TSI/C3  - initial configuration

When the TSI-660 was deployed, there were several days of initial adjustments to the 
shadowband alignment and sky filter.

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• lat
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• alt
• solar.altitude
• lon
• count.box
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• base_time
• count.mask
• region.sun.count.thin

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C2 - camera failure

The TSI camera was producing either poor or no images during this time. The problem was 
corrected by disconnecting and reconnecting the cable terminations to the camera both 
inside the main enclosure and in the camera housing.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.mask
• count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.unknown
• region.zenith.count.thin
• count.box
• count.sub.horz

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C2 - Camera failure

The operation of the camera was itermittant. It produced very poor "hazy" images, blank 
white images, or no images when the camera failed to respond. Several attempts were made to 
correct the problem, involving checking the power and ethernet connections and wire and 
cleaning the lens and filter. The camera was replaced by a spare.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.box
• region.zenith.count.thin
• count.sub.horz
• count.sky
• region.horizon.count.thin
• region.sun.count
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• region.horizon.count
• count.mask
• count.opaque
• count.unknown

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Raw data stream - documentation not supported

TWP/TSI/C1 - hazy image

Moisture in the camera lens and filter caused the sky image to be very "hazy". The lens 
and filter were cleaned, the moisure seals were checked, and desiccant was added to both 
the camera housing and main electonics enclosure.

• JPEG data stream - documentation not yet available

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.opaque
• count.box
• region.horizon.count.opaque
• region.sun.count
• region.sun.count.opaque
• region.zenith.count.thin
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• count.mask
• region.zenith.count.opaque
• region.sun.count.thin
• count.unknown

TWP/TSI/C1 - moisture in camera housing

Water infiltrated the camera housing after periods of heavy rain causing moisture to 
collect inside the neutral density filter, corrupting the images. The filter was cleaned, 
o-ring seal checked, and camera housing sealed where it joins the arm.

• JPEG data stream - documentation not yet available

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.opaque
• count.box
• region.horizon.count.opaque
• region.sun.count
• region.sun.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• count.mask
• region.zenith.count.opaque
• region.sun.count.thin
• count.unknown

TWP/TSI/C1 - obstruction in lens

The TSI at Manus has been able to remain dry and produces an image but the percentage of 
cloud cover is determined to be 100% even on cloud free days. Moisture in the camera lens 
and neutral density filter was corrupting the sky images. The lens and filter were 
cleaned, the moisure seals checked, the camera housing sealed, and desiccant added to both the 
camera housing and main electronics enclosure. On 3/23/2006, the lens was replaced and 
the sky images were significantly improved.

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• sun.strength
• Cloud amount, opaque (percent)(percent.opaque)
• count.mask
• region.zenith.count.opaque
• count.unknown
• count.sub.horz
• count.thin
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C3 - Instrument failure

The TSI failed due to a lightning strike. Several parts were replaced, modified, or 
bypassed and the system was restarted.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• lat
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• alt
• solar.altitude
• count.box
• lon
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• base_time
• count.mask
• region.sun.count.thin

• Raw data stream - documentation not supported

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C3 - controller board failure

The mirror control board failed and was replaced with a spare. Several images were 
collected in the iterim that should be ignored. These images include periods when the sun was 
not masked by the shadowband, the camera lens was covered by red tape to protect the CCD 
from direct exposure to the sun and, the instrument was inside the shop for repair and 
testing.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• Sunshine Meter(sunny)
• region.sun.count
• Cloud amount, thin (percent)(percent.thin)
• lat
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• time_offset
• alt
• solar.altitude
• count.box
• lon
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• base_time
• count.mask
• region.sun.count.thin

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C1 - Shadowband continuosly rotating

The mirror was continuously spinning during different periods of the day, usually in the 
afternoon, causing the shadowband to not properly block the sun. This problem was 
corrected by removing the real-time-clock integrated circuit DSI306, or EEPROM U10, from the 
control board and reloading the position and time parameters.

• JPEG data stream - documentation not yet available

• AVHRR satellite images for Darwin from BOM (RAW)(raw)

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C1 - rust spots on mirror

During the evening of 7/8/2006, something caused several rust spots on one side of the 
hemispheric mirror which continued to grow in size and to be interpreted as clouds in the 
processed images. This problem was corrected during a site visit when the mirror was 
replaced.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)

TWP/TSI/C1 - high control board temperature

The TT8 control board temperature was high, ~50C, so that the cooling fan was constantly 
on. It appears that the heat sinks were not transferred from the original board to the new 
one when it was replaced. The problem was corrected when heat sinks were installed.

• count.sub.horz
• Sunshine Meter(sunny)
• count.thin
• region.horizon.count
• count.opaque
• count.box
• region.horizon.count.opaque
• region.sun.count
• region.sun.count.opaque
• region.zenith.count.thin
• solar.azimuth
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• sun.strength
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• count.mask
• region.sun.count.thin
• region.zenith.count.opaque
• count.unknown

TWP/TSI/C1 - solar shadowband inoperative

The mirror/shadowband was not turning and there was no communication with the control 
board. The shadowband was stuck in the position of 0 degrees from 8/29 to 9/20/2006.

On 10/12/2006, the mirror was replaced, the real-time clock chip was removed and heat 
sinks were added to the control board, and the Ethernet hub and serial adaptor were replaced. 
On 1/8/2007, the slip clutch assembly, timing pulley, and timing belt were replaced 
(which were damaged when the mirror was replaced). These actions did not correct the problem. 
The instrument was swapped with the unit from Darwin so that the control board could be 
repaired and tested in Darwin.

Several images were collected in the iterim that should be ignored. These images include 
periods when the sun was not masked by the shadowband or the camera lens was covered by 
tape to protect the CCD from direct
exposure to the sun. There are also extended periods of missing data when the instrument 
was shutdown, waiting for parts.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• solar.azimuth
• sun.strength
• lon
• Cloud amount, opaque (percent)(percent.opaque)
• time
• count.mask
• region.zenith.count.opaque
• count.unknown
• count.sub.horz
• count.thin
• alt
• lat
• base_time
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• time_offset
• count.sky
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C2 - hazy image

Condensation in the camera lens and/or filter caused the sky images to be "hazy". The 
desiccant in the main enclosure was changed and the neutral density filter was cleaned.

• Cloud decision images, Total Sky Imager, PNG format(png)

• sun.strength
• solar.altitude
• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• lat
• region.sun.count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• alt
• count.box
• region.zenith.count.thin
• count.sub.horz
• count.sky
• lon
• region.horizon.count.thin
• region.sun.count
• time_offset
• region.horizon.count.opaque
• Sunshine Meter(sunny)
• region.horizon.count
• count.mask
• count.opaque
• count.unknown
• base_time
• solar.azimuth

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - hazy image

When the TSI from Darwin was installed (so the instrument from Manus could be returned to 
Darwin for repair) moisture in the camera lens and filter caused the sky image to be very 
"hazy". The U10 chip was removed from the control board, desiccant was installed inside 
the enclosure, additional small desiccant bags were installed inside the camera housing, 
the camera housing was sealed with silicon to prevent moisture ingress, and the camera 
lens filter was cleaned and the focus adjusted.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C2 - Mirror continuously rotating

The mirror began to continuously spin. Diagnostics were performed on the encoder, control 
board, and Ethernet adaptor. The instrument was removed on 1/2/2008 and shipped to Darwin 
for repair. The encoder and control board were replaced and the instrument was 
reinstalled.

• Cloud decision images, Total Sky Imager, PNG format(png)

• region.horizon.count.thin
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count
• region.zenith.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C2 - Shadowband Misalignment

The shadowband was not masking the sun beginning at sunrise because the control board had 
the wrong date & time. These were reset and the shadowband came into proper alignment.

• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count
• region.sun.count.opaque
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• count.thin
• solar.azimuth

TWP/TSI/C3 - mirror continously rotating

The mirror/shadowband was rotating continously because of a serial communication problem 
with the control board. The problem was corrected when the Ethernet-to-serial adaptor was 
replaced.

• Cloud amount, thin (percent)(percent.thin)
• region.sun.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• count.sky
• count.thin
• region.sun.count.thin
• region.sun.count
• count.opaque
• count.mask

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C1 - shadowband misalignment

The TSI mirror controller was configured with a north latitude instead of south causing 
the shadowband to not mask the sun beginning at the vernal equinox. The problem was 
corrected by changing the sign of the latitude in the configuration file.

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• region.sun.count.opaque
• region.sun.count
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin

TWP/TSI/C1 - Missing data

Data are missing and unrecoverable.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• region.horizon.count
• count.opaque
• count.box
• region.sun.count
• solar.azimuth
• sun.strength
• lon
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• count.mask
• time
• count.unknown
• count.sub.horz
• count.thin
• alt
• lat
• base_time
• region.horizon.count.opaque
• region.sun.count.opaque
• region.zenith.count.thin
• time_offset
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

TWP/TSI/C1 - Shadowband Misalignment

When the TSI was reinstalled on 4/22/2009, the shadowband was aligned relative to the 
enclosure but either the camera arm & housing was not plumb or the enclosure was not properly 
aligned with true north. This was corrected on 6/30 at solar noon.

• count.thin
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• sun.strength
• region.sun.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin

TWP/TSI/C3 - Mirror continuously rotating

The mirror/shadowband was continuously rotating. Communication with the serial adaptor was 
lost because the battery had gone resistive and loading down the system. The battery was 
replaced and communication restored.

• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.sub.proczen
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• region.zenith.count
• count.sub.horz
• count.box
• region.zenith.count.opaque
• count.opaque
• count.unknown
• count.sky
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• sun.strength
• region.sun.count.thin
• region.sun.count
• count.mask

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C3 - Maintenance/Control board update

The mirror did not turn and the shadowband did not mask the sun while the control 
interface board was being upgraded.

• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.sub.proczen
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• region.zenith.count
• count.sub.horz
• count.box
• region.zenith.count.opaque
• count.opaque
• count.unknown
• count.sky
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• sun.strength
• region.sun.count.thin
• region.sun.count
• count.mask

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C1 - Shadowband misalignment

The shadowband was not effectively blocking the sun, except for around the noon hours when 
the sun was directly over-head. It was later found to be caused by stripped threads on 
the mirror mounting post.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• count.sky
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• count.mask

TWP/TSI/C2 - Shadowband misalignment

The mirror was continuously rotating and communication with the control board failed. As a 
result, the sun was not being blocked by the shadowband. The ethernet-to-serial adaptor 
was replaced.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C1 - Camera misaligned

The camera was moved inside the enclosure so that the lens was not aligned with the 
viewing port and the shadowband was misaligned.

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• Sunshine Meter(sunny)
• count.sub.horz
• count.thin
• region.horizon.count
• count.box
• count.opaque
• region.sun.count.opaque
• region.sun.count
• region.horizon.count.opaque
• region.zenith.count.thin
• count.sky
• region.zenith.count
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• sun.strength
• region.horizon.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• count.mask
• count.unknown

TWP/TSI/C1/C2/C3 - Ingest Problem

A minor error was made with diagnostic metadata attribute sunny_thresh when the TSI ingest 
was updated.

• base_time

• base_time

• base_time

TWP/TSI/C1 - Shadowband misalignment

The shadowband was not maintaining its position because the mirror was loose.

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.thin
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.sun.count.opaque
• region.horizon.count.thin
• region.horizon.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.sun.count.thin
• region.zenith.count.thin

TWP/TSI/C2 - Control board failure

The indicated dome temperature and heat sink temperature were unreasonably high. The 
control board and serial adaptor were replaced and the instrument was shipped to Darwin for 
repair where the following was performed: 
- changed out 12V battery, 
- changed out faulty TT8 processor s/n 939476 with spare s/n 939476, 
- installed new model Lantronix EDS1100 serial to ethernet adapter,  
- modified board to adapter data connection to suit new adapter, 
- changed out two faulty temperature sensors (heatsink and dome), 
- changed out corroded heatsink fan and faulty wiring, 
- replaced damaged heater wiring, 
- removed corrosion and re-painted camera bracket, 
- waxed and polished dome mirror and whole instrument body.

• Cloud decision images, Total Sky Imager, PNG format(png)

• count.sky
• region.horizon.count.thin
• sun.strength
• region.sun.count
• region.zenith.count
• region.horizon.count.opaque
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count
• region.sun.count.thin
• region.sun.count.opaque
• count.mask
• count.opaque
• count.sub.proczen
• Cloud amount, thin (percent)(percent.thin)
• count.unknown
• region.zenith.count.thin
• count.box
• count.sub.horz

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

TWP/TSI/C3 - Power supply failure

The power supply began to fail, causing all black or all white images and intermittent 
image collection. The power supply was replaced.

• MPEG data stream - documentation not yet available

• count.sub.proczen
• region.zenith.count
• count.sub.horz
• count.unknown
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• region.sun.count
• Sunshine Meter(sunny)
• Cloud amount, thin (percent)(percent.thin)
• region.horizon.count
• region.sun.count.opaque
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• solar.altitude
• count.box
• count.opaque
• region.zenith.count.opaque
• count.sky
• region.horizon.count.thin
• solar.azimuth
• count.mask
• region.sun.count.thin

• JPEG data stream - documentation not yet available

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C2 - Mirror rust

The mirror had spots of rust that were detected in the processed cloud image. The mirror 
was replaced.

• Cloud decision images, Total Sky Imager, PNG format(png)

• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count.opaque
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin
• region.zenith.count.opaque
• count.thin

TWP/TSI/C1 - Water on lens

After a rain episode, drops of water collected on the lens window causing the cloud 
fraction values to be suspect. To prevent this, a drip edge was formed around the bottom of the 
enclosure with thick electrical or splicing tape.

• count.thin
• count.sky
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.opaque
• region.zenith.count.thin

TWP/TSI/C2 - Water on lens

After a rain episode, drops of water collected on the lens window causing the cloud 
fraction values to be suspect. To prevent this, a drip edge was formed around the bottom of the 
enclosure with thick electrical or splicing tape.

• count.sky
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.thin
• region.zenith.count.opaque
• count.thin

TWP/TSI/C3 - Water on lens

After a rain episode, drops of water collected on the lens window causing the cloud 
fraction values to be suspect. To prevent this, a drip edge was formed around the bottom of the 
enclosure with thick electrical or splicing tape.

• Cloud amount, thin (percent)(percent.thin)
• Cloud amount, opaque (percent)(percent.opaque)
• count.sky
• count.thin
• region.zenith.count.thin
• region.zenith.count
• region.zenith.count.opaque
• count.opaque

TWP/TSI/C3 - cloud mask

The processed image and cloud fraction determination were incorrect because the 
thin/opaque threshold was set too high.

• Cloud amount, thin (percent)(percent.thin)
• region.sun.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• count.thin
• region.zenith.count.thin
• region.horizon.count.opaque
• region.horizon.count.thin
• region.zenith.count.opaque
• region.sun.count.thin
• count.opaque
• count.mask

• Cloud decision images, Total Sky Imager, PNG format(png)

TWP/TSI/C1 - meta data

The YYYMMDDHHMMSS_tsi.properties files were corrupted causing the ingest to assign 
incorrect values to attributes opaque_thresh, thin_thresh, cam_mir_dist, and center_x. A 
residual properties file from 1/20/2012 was being concatenated to the current properties file 
before it was moved to the ingest directory, so that the last values read were from the 
earlier date.

• time_offset

TWP/TSI/C2 - mirror contamination

The surface of the chrome mirror was soiled causing the cloud fraction determination to be 
unreliable.

• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• Cloud amount, thin (percent)(percent.thin)
• count.thin