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
• Cloud amount, thin (percent)(percent.thin)
• lat
• 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 - 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
• count.mask
• region.zenith.count
• alt
• solar.altitude
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• lon
• time_offset
• sun.strength

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

SGP/TSI/C1 - Shadowband misaligned

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

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

• JPEG data stream - documentation not yet available

• Raw data stream - documentation not supported

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

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

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)
• 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
• count.mask
• region.zenith.count
• alt
• solar.altitude
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• lon
• time_offset
• sun.strength

• 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
• 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
• Sunshine Meter(sunny)
• count.mask
• region.sun.count

• 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
• count.mask
• region.sun.count

• JPEG data stream - documentation not yet available

SGP/TSI/C1 - Shadowband Misalignment

The shadowband was slightly misaligned and was corrected by adjusting it +2 degrees.

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

• JPEG data stream - documentation not yet available

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

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
• 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
• region.zenith.count.thin
• count.box
• 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
• 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
• region.zenith.count.opaque
• 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)

SGP/TSI/C1 - Instrument failure

The TSI-880 experienced a power and/or computer failure. It was replaced with a spare 
TSI-440 and data collection resumed 4/5/05.  Note: this is a temporary replacement.

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

• JPEG data stream - documentation not yet available

• Raw data stream - documentation not supported

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

PYE/TSI/M1 - Misalignment

The TSI was not aligned with true north.

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

• JPEG data stream - documentation not yet available

• MPEG 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.horizon.count.opaque
• region.zenith.count
• region.zenith.count.opaque
• count.thin
• Sunshine Meter(sunny)
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• region.sun.count.thin
• region.sun.count.opaque
• count.mask
• count.sub.proczen
• count.opaque
• 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

PYE/TSI/M1 - water in lens

The lower half of the TSI images were blurry due to water in the camera lens and/or 
filter. The problem was corrected when both were cleaned.

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

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

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

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

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.box
• count.opaque
• region.horizon.count.opaque
• region.sun.count.opaque
• region.sun.count
• 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 - 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.box
• count.opaque
• region.horizon.count.opaque
• region.sun.count.opaque
• region.sun.count
• 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 - 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.sun.count.opaque
• region.horizon.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

SGP/TSI/C1 - Heater problem

The TSI was converted from a model 880 to 660 which requires separate power for the mirror 
heater. The heater was not powered during this period so morning dew and other 
condensation was not quickly evaporated.

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

• JPEG data stream - documentation not yet available

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

SGP/TSI/C1 - Birds obstructing view

Birds were frequently in the the field-of-view and soiling the mirror, affecting the 
visible sky image and resulting processed cloud fraction image. Bird deterant spikes were 
installed on top of the camera housing and arm on 5/16 which prevented their perching on the 
camera so that the impact on the sky image was reduced. But birds were still present 
around the edges of the mirror until additional spikes were installed on top of the four 
corners of the enclosure on 6/14.

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

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

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
• region.zenith.count.opaque
• 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.horizon.count.opaque
• region.sun.count.opaque
• region.sun.count
• 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 - 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
• lon
• sun.strength
• 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
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

NIM/TSI/M1 - Shadowband Misalignment

From installation, the shadowband was positioned south at solar noon until the vernal 
equinox when it began to migrate counter-clockwise until reaching east 37 days later on 4/26 
(about 9 days before mid-spring). The shadowband at solar noon continued to migrate until 
reaching its most northerly position (~15 deg) on the summer solstice (if everything was 
perfectly aligned, it probably would have been pointed north on this day). It then began 
to migrate clockwise and reached east again 56 days later on 8/16 (about 14 days after 
mid-summer). As expected, the shadowband reached its most southerly position on the 
autumnal equinox but was about 10 deg off of being due south. 

With the apparent alignment problem, I don't understand why the shadowband was mostly 
blocking the sun. When I started noticing this offset in May, I chose to leave it alone 
because I felt that adjusting the shadowband to where I thought it should be would cause it to 
not block the sun at either sunrise or sunset. 

The alignment was corrected on 9/29 (6 days after the day of the autumnal equinox).

• MPEG data stream - documentation not yet available

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

• JPEG data stream - documentation not yet available

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
• region.zenith.count.thin
• count.box
• 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.horizon.count.opaque
• region.sun.count.opaque
• region.sun.count
• 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

NSA/TSI/C1 - camera lens covered

The shadowband was not properly masking the sun so the camera lens was covered on 4/13 to 
prevent damage to the CCD. On 4/20, the mirror was blown off by a snow storm and the 
instrument was brought inside for repair. The mirror was replaced, the lens uncovered, and 
the instrument reinstalled.

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

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

• JPEG data stream - documentation not yet available

NSA/TSI/C1 - shadowband misaligned

At several times during this period the shadowband did not mask the sun because the mirror 
was not properly secured. Attempts were made to align the mirror on 4/2, 4/3, and 4/10.

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

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

• JPEG data stream - documentation not yet available

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.zenith.count
• region.horizon.count.opaque
• 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

NSA/TSI/C1 - frost/condensation in lens

The sky image appeared hazy and was corrected by cleaning the neutral-density filter and 
lens of the camera. The determination of cloud fraction may be affected.

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

• JPEG data stream - documentation not yet available

SGP/TSI/C1 - Missing data

Data are missing and unrecoverable.

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

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

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

SGP/TSI/C1 - Contamination of mirror

A persistent bird was landing on and polluting the mirror, multiple times throughout the 
day. Spikes were placed on the corners and top of the instrument (an affective deterrent 
in the past) but this bird had the agility to perch on the top-center of the mirror.

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

• JPEG data stream - documentation not yet available

• MPEG data stream - documentation not yet available

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

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
• lon
• sun.strength
• 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
• count.sub.proczen
• region.zenith.count
• Cloud amount, thin (percent)(percent.thin)
• solar.altitude
• region.horizon.count.thin
• region.sun.count.thin

NSA/TSI/C1 - Mirror frozen

The mirror was not rotating so the shadowband was not masking the sun. This appears to 
have been caused by snow that was melted by the mirror heater and then re-frozen by high, 
cold winds.

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

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

• JPEG data stream - documentation not yet available

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
• count.mask
• region.sun.count

• JPEG data stream - documentation not yet available

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

GRW/TSI/M1 - Shadowband Misalignment

The shadowband was intermittently misaligned and not completely masking the sun because 
the mirror became loose from the shaft while being polished. The shadowband was realigned 
on 1/14 but by 1/27 was again slightly misaligned. The instrument was reoriented with true 
north on 1/27 and the shadowband adjusted again on 1/31. The problem was corrected on 
2/2 when the mirror mounting was tightened and the shadowband realigned.

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

• count_sub_horz
• region_sun_count
• region_horizon_count_thin
• region_horizon_count_opaque
• count_mask
• count_thin
• region_sun_count_thin
• region_zenith_count_thin
• region_sun_count_opaque
• Cloud amount, opaque (percent)(percent_opaque)
• count_sky
• Cloud amount, thin (percent)(percent_thin)
• count_sub_proczen
• count_opaque
• count_box
• region_horizon_count
• region_zenith_count
• region_zenith_count_opaque

• JPEG data stream - documentation not yet available

GRW/TSI/M1 - Contamination of mirror

A persistent, agile bird was landing on top of and polluting the mirror, multiple times 
throughout the day, affecting the visible and processed images and cloud fraction data.

• MPEG data stream - documentation not yet available

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

• count_sky
• Cloud amount, thin (percent)(percent_thin)
• sun_strength
• count_thin
• count_opaque
• region_zenith_count_thin
• region_zenith_count
• region_zenith_count_opaque
• Cloud amount, opaque (percent)(percent_opaque)

• JPEG data stream - documentation not yet available

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 is continously rotating and communication with the control board has failed. 
Please reassign the IP address to the Lantronix adaptor with either EZWebCon (preferred) 
or arp_lan.

• 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
• count.mask
• region.zenith.count
• alt
• solar.altitude
• region.sun.count.opaque
• region.horizon.count
• Cloud amount, opaque (percent)(percent.opaque)
• count.opaque
• lon
• time_offset
• sun.strength

• MPEG data stream - documentation not yet available

• Raw data stream - documentation not supported