PYE/TSI/M1 - Misalignment

The TSI was not aligned with true north.

• Pixel count: number total in zenith circle(region.zenith.count)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Percent opaque cloud(percent.opaque)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Pixel count: number total indeterminant(count.unknown)
• Percentage thin cloud(percent.thin)
• Pixel count: number total in horizon area(region.horizon.count)
• Pixel count: number total in processed circle(count.sky)
• Pixel count: number total thin(count.thin)
• Pixel count: number below horizon in image(count.sub.horz)
• Pixel count: number total in sun circle(region.sun.count)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number total opaque(count.opaque)
• Pixel count: box, outside mirror area(count.box)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Pixel count: camera and sun strip mask(count.mask)
• Pixel count: number total between horizon and processed circle(count.sub.proczen)

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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.

• PNG data stream - documentation not supported(png)

• Pixel count: number total in processed circle(count.sky)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Relative \'strength\' of direct sun(sun.strength)
• Pixel count: number total in sun circle(region.sun.count)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number total in zenith circle(region.zenith.count)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Pixel count: number total thin(count.thin)
• Sunshine meter(sunny)
• Pixel count: number total in horizon area(region.horizon.count)
• Percent opaque cloud(percent.opaque)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: camera and sun strip mask(count.mask)
• Pixel count: number total between horizon and processed circle(count.sub.proczen)
• Pixel count: number total opaque(count.opaque)
• Percentage thin cloud(percent.thin)
• Pixel count: number total indeterminant(count.unknown)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)
• Pixel count: box, outside mirror area(count.box)
• Pixel count: number below horizon in image(count.sub.horz)

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• (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.

• Relative \'strength\' of direct sun(sun.strength)
• Pixel count: number total in zenith circle(region.zenith.count)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Percent opaque cloud(percent.opaque)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Pixel count: number total indeterminant(count.unknown)
• Percentage thin cloud(percent.thin)
• Pixel count: number total in horizon area(region.horizon.count)
• Pixel count: number total in processed circle(count.sky)
• Pixel count: number total thin(count.thin)
• Pixel count: number below horizon in image(count.sub.horz)
• Pixel count: number total in sun circle(region.sun.count)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number total opaque(count.opaque)
• Pixel count: box, outside mirror area(count.box)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Pixel count: camera and sun strip mask(count.mask)
• Pixel count: number total between horizon and processed circle(count.sub.proczen)

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• Raw data stream - documentation not supported(raw)

SGP/MFRSR/E13 - Reprocess: Angstrom Exponent Error

The data used to calculate the angstrom exponent was incorrect.  These
fields should not be used.  All other fields are considered good.

• Angstrom exponent(barnard_angstrom_exponent)
• Angstrom exponent(michalsky_angstrom_exponent)

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.

• PNG data stream - documentation not supported(png)

• Relative \'strength\' of direct sun(sun.strength)
• Pixel count: number total in zenith circle(region.zenith.count)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Pixel count: number total thin(count.thin)
• Percent opaque cloud(percent.opaque)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number total between horizon and processed circle(count.sub.proczen)
• Percentage thin cloud(percent.thin)
• Pixel count: box, outside mirror area(count.box)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)
• Pixel count: number below horizon in image(count.sub.horz)
• Pixel count: number total in processed circle(count.sky)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Pixel count: number total in sun circle(region.sun.count)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Sunshine meter(sunny)
• Pixel count: number total in horizon area(region.horizon.count)
• Pixel count: camera and sun strip mask(count.mask)
• Pixel count: number total opaque(count.opaque)
• Pixel count: number total indeterminant(count.unknown)

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• (MPEG data stream - documentation not yet available)

• null(Raw data stream - documentation not supported)

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.

• Raw data stream - documentation not supported(raw)

• JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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• Sunshine meter(sunny)
• Pixel count: number total in horizon area(region.horizon.count)
• Pixel count: number total opaque(count.opaque)
• Pixel count: box, outside mirror area(count.box)
• Pixel count: number total in sun circle(region.sun.count)
• Relative \'strength\' of direct sun(sun.strength)
• Percent opaque cloud(percent.opaque)
• Pixel count: camera and sun strip mask(count.mask)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Pixel count: number total indeterminant(count.unknown)
• Pixel count: number below horizon in image(count.sub.horz)
• Pixel count: number total thin(count.thin)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)
• Pixel count: number total in processed circle(count.sky)
• Pixel count: number total between horizon and processed circle(count.sub.proczen)
• Pixel count: number total in zenith circle(region.zenith.count)
• Percentage thin cloud(percent.thin)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Pixel count: number thin in sun circle(region.sun.count.thin)

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.

• PNG data stream - documentation not supported(png)

• JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

• (MPEG data stream - documentation not yet available)

SGP/MFRSR/E13 - Shadowband misalignment

The E13 MFRSR developed a shading problem on or about 05/04.  (The exact date when this 
problem started is difficult to pin down exactly.) The shading problem is easy to identify 
on a clear day because plots of direct beam and diffuse irradiance versus time become 
"fuzzy".  The total irradiance is not affected.
  

In response to the shading problem, a whole sequence of events then ensued: these actions 
were designed to solve the shading problem but did not succeed until the very end.

Here's a rundown of what took place:

98/05/11 - shadowband adjustment was made at 1544 GMT
         - this adjustment corrected the shading problem that 
           occurred in the morning, but inadvertently caused
           a PM shading problem 
98/05/20 - shadowband adjustment at 1804 GMT
98/05/21 - shadowband adjustment at 1630 GMT
98/06/01 - shadowband adjustment at 1910 GMT
98/06/02 - shadowband adjustmnet at 1550 GMT

Alas, these adjustments did not solve the shading problem and
it seemed to get worse (for example, on 06/11 the shading 
is VERY BAD from sunup until about 1500 LST).

98/06/16 - shadowband adjustment at 1715 GMT

This final adjustment seems to a solved the problem!

• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)

• Direct Normal Broadband Irradiance broadband scale applied(direct_normal_broadband)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4(diffuse_hemisp_narrowband_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3(diffuse_hemisp_narrowband_filter3)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2(diffuse_hemisp_narrowband_filter2)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1(diffuse_hemisp_narrowband_filter1)
• Narrowband Diffuse Hemispheric Irradiance, Filter 5(diffuse_hemisp_narrowband_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6(diffuse_hemisp_narrowband_filter6)
• Direct Horizontal Broadband Irradiance, broadband scale applied(direct_horizontal_broadband)
• Direct Normal Narrowband Irradiance, Filter 6(direct_normal_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 5(direct_normal_narrowband_filter5)
• Direct Normal Narrowband Irradiance, Filter 4(direct_normal_narrowband_filter4)
• Direct Normal Narrowband Irradiance, Filter 3(direct_normal_narrowband_filter3)
• Direct Normal Narrowband Irradiance, Filter 2(direct_normal_narrowband_filter2)
• Direct Normal Narrowband Irradiance, Filter 1(direct_normal_narrowband_filter1)
• Diffuse Hemispheric Broadband Irradiance (Approximate), MFRSR(diffuse_hemisp_broadband)
• Narrowband Direct Horizontal Irradiance, Filter 2(direct_horizontal_narrowband_filter2)
• Narrowband Direct Horizontal Irradiance, Filter 3(direct_horizontal_narrowband_filter3)
• Narrowband Direct Horizontal Irradiance, Filter 1(direct_horizontal_narrowband_filter1)
• Narrowband Direct Horizontal Irradiance, Filter 6(direct_horizontal_narrowband_filter6)
• Narrowband Direct Horizontal Irradiance, Filter 4(direct_horizontal_narrowband_filter4)
• Narrowband Direct Horizontal Irradiance, Filter 5(direct_horizontal_narrowband_filter5)

• log(irradiance) for the Direct Narrowband Filter6, Michalsky(michalsky_lnI_filter6)
• rejected points for the final fit for the Direct Broadband, Michalsky(michalsky_rejected_broadband)
• rejected points for the final fit for the Direct Broadband, Barnard(barnard_rejected_broadband)
• rejected points for the final fit for the Direct Narrowband Filter6, Barnard(barnard_rejected_filter6)
• log(irradiance) for the Direct Narrowband Filter1, Michalsky(michalsky_lnI_filter1)
• log(irradiance) for the Direct Narrowband Filter5, Michalsky(michalsky_lnI_filter5)
• log(irradiance) for the Direct Narrowband Filter4, Michalsky(michalsky_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter3, Michalsky(michalsky_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter2, Michalsky(michalsky_lnI_filter2)
• rejected points for the final fit for the Direct Narrowband Filter3, Barnard(barnard_rejected_filter3)
• rejected points for the final fit for the Direct Narrowband Filter2, Barnard(barnard_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter5, Barnard(barnard_rejected_filter5)
• rejected points for the final fit for the Direct Narrowband Filter4, Barnard(barnard_rejected_filter4)
• rejected points for the final fit for the Direct Narrowband Filter1, Barnard(barnard_rejected_filter1)
• log(irradiance) for the Direct Broadband, Barnard(barnard_lnI_broadband)
• log(irradiance) for the Direct Broadband, Michalsky(michalsky_lnI_broadband)
• rejected points for the final fit for the Direct Narrowband Filter3, Michalsky(michalsky_rejected_filter3)
• rejected points for the final fit for the Direct Narrowband Filter4, Michalsky(michalsky_rejected_filter4)
• rejected points for the final fit for the Direct Narrowband Filter5, Michalsky(michalsky_rejected_filter5)
• rejected points for the final fit for the Direct Narrowband Filter6, Michalsky(michalsky_rejected_filter6)
• log(irradiance) for the Direct Narrowband Filter5, Barnard(barnard_lnI_filter5)
• log(irradiance) for the Direct Narrowband Filter6, Barnard(barnard_lnI_filter6)
• log(irradiance) for the Direct Narrowband Filter3, Barnard(barnard_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter4, Barnard(barnard_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter2, Barnard(barnard_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter1, Barnard(barnard_lnI_filter1)
• rejected points for the final fit for the Direct Narrowband Filter2, Michalsky(michalsky_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter1, Michalsky(michalsky_rejected_filter1)

• standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
• rejection flag for Direct Broadband(barnard_badflag_broadband)
• rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(barnard_good_fraction_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(barnard_good_fraction_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(barnard_good_fraction_filter5)
• percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(barnard_good_fraction_filter6)
• rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
• rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
• rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
• rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
• rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(barnard_good_fraction_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(barnard_good_fraction_filter2)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter1(barnard_error_slope_filter1)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter2(barnard_error_slope_filter2)
• optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
• optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
• optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
• percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
• optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
• optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter5(barnard_error_slope_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter6(barnard_error_slope_filter6)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter3(barnard_error_slope_filter3)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter4(barnard_error_slope_filter4)
• optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
• optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
• optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
• optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(michalsky_good_fraction_filter6)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(michalsky_good_fraction_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(michalsky_good_fraction_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(michalsky_good_fraction_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(michalsky_good_fraction_filter4)
• error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
• optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
• error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
• optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(michalsky_good_fraction_filter1)
• optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
• optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
• standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
• standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
• error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
• standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
• standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
• standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
• standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
• error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
• error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
• error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
• error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
• optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
• rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
• rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
• rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
• number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
• rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
• rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
• rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
• Angstrom exponent(barnard_angstrom_exponent)
• error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
• number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
• Angstrom exponent(michalsky_angstrom_exponent)
• number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
• rejection flag for Direct Broadband(michalsky_badflag_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
• number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
• number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)