CALMON data 1 Use of daily CALMON data Brian Stewart RAL

CALMON data 2 Topics Work in progress, based on –Engineering Report data Scan averages generated by daily routine processing –Raw telemetry data

CALMON data 3 ER data Integrating Sphere 25 th -27 th Dec 2004 Daily average SW signal over 282 samples – BB Average over ALL pixels Averages per pixel Peak at approx 6pm each day, pattern repeats from day to day

CALMON data 4 CALMON all pixels Integrating Sphere Daily peak of average SW signal over 282 samples and all pixels Gaps – Sun avoidance seasons Geometry appears to repeat from year to year Overall ~3% change 2003 – 2004

CALMON data 5 CALMON data by pixel Integrating Sphere Daily peak average SW signal over 282 samples for individual pixels Relative pixel signals appears to repeat from year to year Overall shape repeats from year to year June 21 st 2003 June 21 st 2004

CALMON data 6 CALMON ratio Integrating Sphere Ratio of daily peak average SW signal over 282 samples for individual pixels 2003 peak/2004 peak

CALMON data 7 Pixel data Pixel 128 (2003) CALMON –BB data Time ordered (SW, total) as in ER Sorted by Sun angle

CALMON data 8 Pixel data (2) Pixel 128 SW-BB median in 1° intervals

CALMON data 9 Pixel data(3) Pixel 128 peak and baseline well defined

CALMON data 10 All pixels Feb 28 th 2003, 2004, 2005 Same patterns 2003/02/ /02/282005/02/28

CALMON data 11 All pixels(2) Pixel peaks 28/02/03 28/02/04 28/02/05

CALMON data 12 Response ratios ~5% ~1% pixel/ pixel ~constant differences Pixels Pixel 28 More work ER or raw data Photo-diode

CALMON data 13 Photodiode data

CALMON data 14 Photodiode data(2) Diodes A,B,C 1 msec response CALMON response Direct solar signal 24° integration Problems