Skip to main content

AOCS Instrument Descriptions and Histories


Model Measurement
Notes (below)		 Units Install
Date		 Removal
Date		 Current
SN		 Current
CF
LI-200 Global Horizontal W/m2
counts		 10/19/2001 - PY2255 1.424 W/m2/count
1
[DQS]
[Maint]		 Irradiance is temperature corrected.
LI-190 Global Horizontal Quantum µmol/s/m2
counts		 10/19/2001 - Q8709 1.426e18 Photons/s/m2/count
1
[DQS]
[Maint]		 Micromoles is temperature corrected. Note: 1 µmol = 6.0221367e17 Photons
LI-200 Global Tilt W/m2
counts		 10/19/2001 - PY2235 2.489 W/m2/count
1
[DQS]
[Maint]		 LICOR LI-200 pyranometer mounted at a 40o degree south tilt. Irradiance is temperature corrected.
LI-190 Global Tilt Quantum µmol/s/m2
counts		 10/19/2001 - Q8433 2.065e18 Photons/s/m2/count
1
[DQS]
[Maint]		 LICOR LI-190 quantum sensor mounted at a 40o degree south tilt. Micromoles is temperature corrected. Note: 1 µmol = 6.0221367e17 Photons
LI-200 Direct Normal W/m2
counts		 10/19/2001 - PY2248 1.202 W/m2/count
1
[DQS]
[Maint]		 LICOR LI-200 pyranometer mounted in a 5.7o degree limiting tube. Irradiance is temperature corrected.
LI-190 Direct Normal Quantum µmol/s/m2
counts		 10/19/2001 - Q8434 2.482e18 Photons/s/m2/count
1
[DQS]
[Maint]		 LICOR LI-190 quantum sensor mounted in a 5.7o degree limiting tube. Micromoles is temperature corrected. Note: 1 µmol = 6.0221367e17 Photons
UV020 Photometers (368, 500, 862, & 942nm) -
counts		 10/19/2001 - AOCS368-1
AOCS500-1
AOCS862-1
AOCS942-1		 Vo = e^6.098 counts
Vo = e^6.824 counts
Vo = e^6.445 counts
PWV K3 = 0.523
[DQS]
[Maint]		 UDT UV020 sensors are mounted in a 5.7o degree limiting tube with 10nm wide filters centered at 368, 500, 862, and 942nm. The turbidity at 500nm is also calculated. As of October 5, 2005, the turbidity at 368 and 862nm is also calculated.
9M10032-C3 AOCS Temperature oC 10/19/2001 - - function
Internal AOCS Head Temperature measured by DALE 9M10032-C3 10K Thermistor. Prior to April 14, 2004, the raw counts was recorded.
(calc) Airmass - 10/19/2001 - - -
Relative optical airmass (not pressure corrected). As of April 7, 2005 @ 14:18 MST the AOCS software was updated to use the Solar Position Algorithm (SPA)
(calc) Zenith Angle o 04/06/2005 - - -
Solar zenith angle. As of April 7, 2005 @ 14:18 MST the AOCS software was updated to use the Solar Position Algorithm (SPA).
(calc) Azimuth Angle o 04/07/2005 - - -
Solar azimuth angle. As of April 7, 2005 @ 14:18 MST the AOCS software was updated to use the Solar Position Algorithm (SPA).
Notes:
  • Measurements are made only during daylight hours.
  • Prior to April 16, 2004, calculated parameters and conversion to engineering units were made only when the air mass was less than 10.
  • A derived spectrum (300-4000nm, variable interval) is generated, when the AOCS parameter is less than 0.15.
  • The AOCS cleaning maintenance history since November 2004 to March 25, 2008 is also available. Note: Recent maintenance records are available using the "Maint" link associated to each instrument above.
  • Known instrument problems, since January 2005 can be found in the Data Quality Statements (DQS) database.

[NREL] [MIDC] [SRRL AOCS]