| Model | Measurement Notes (below) |
Units | Install Date |
Removal Date |
Current SN |
Current CF |
|---|---|---|---|---|---|---|
| PSP | Global Horizontal A | W/m2 | 01/13/2003 | 06/25/2004 | 29615F3 | 126.74 W/m2/mV |
| Total Hemispheric shortwave irradiance as measured by an Eppley Laboratory, Inc. Model PSP (Precision Spectral Pyranometer) with calibration factor traceable to the World Radiometric Reference (WRR). Instrument Set A are cleaned more often than Set B. | ||||||
| PSP | Global Horizontal B | W/m2 | 01/13/2003 | 06/25/2004 | 29912F3 | 125.63 W/m2/mV |
| Total Hemispheric shortwave irradiance as measured by an Eppley Laboratory, Inc. Model PSP (Precision Spectral Pyranometer) with calibration factor traceable to the World Radiometric Reference (WRR). Instrument Set A are cleaned more often than Set B. | ||||||
| NIP | Direct Normal A | W/m2 | 01/13/2003 | 06/25/2004 | 29848E6 | 121.69 W/m2/mV |
| Direct (Beam) shortwave irradiance as measured by an Eppley Laboratory, Inc. Model NIP (Normal Incidence Pyrheliometer) mounted in an automatic sun-following tracker. Annual NIP calibrations traceable to WRR. The estimated broadband Aerosol Optical Depth (AOD) is also calculated using this instrument. Instrument Set A are cleaned more often than Set B. | ||||||
| NIP | Direct Normal B | W/m2 | 01/13/2003 | 06/25/2004 | 29936E6 | 121.92 W/m2/mV |
| Direct (Beam) shortwave irradiance as measured by an Eppley Laboratory, Inc. Model NIP (Normal Incidence Pyrheliometer) mounted in an automatic sun-following tracker. Annual NIP calibrations traceable to WRR. The estimated broadband Aerosol Optical Depth (AOD) is also calculated using this instrument. Instrument Set A are cleaned more often than Set B. | ||||||
| 8-48 | Diffuse A | W/m2 | 01/13/2003 | 06/25/2004 | 33279 | 115.56 W/m2/mV |
| Diffuse (Sky) shortwave irradiance measured by an Eppley Black & White Pyranometer mounted under the shading ball of a Sci-Tec tracker. Instrument Set A are cleaned more often than Set B. | ||||||
| 8-48 | Diffuse B | W/m2 | 01/13/2003 | 06/25/2004 | 33285 | 115.16 W/m2/mV |
| Diffuse (Sky) shortwave irradiance measured by an Eppley Black & White Pyranometer mounted under the shading ball of a Sci-Tec tracker. Instrument Set A are cleaned more often than Set B. | ||||||
| CM22 | Diffuse | W/m2 | 01/13/2003 | 06/25/2004 | 010034 | 91.393 W/m2/mV |
| Diffuse (Sky) shortwave irradiance measured by a Kipp & Zonen Pyranometer mounted under the shading ball of a Sci-Tec tracker. | ||||||
| PIR | Downwelling Infrared A | W/m2 | 01/13/2003 | 06/25/2004 | 29146F3 | K0=-5.67464 K1=0.258817 W/m2/µV K2=1.00789 K3=-2.05513 Kr=-7.044e-4 |
| Infrared Irradiance is calculated using: I=K0+VK1+σK2Tr4+σK3(Td4-Tr4), where σ=5.67x10-8 W/(m2K4) (Stephan-Boltzmann's Constant), V=PIR thermopile voltage in µV, and Tr=Tc+VKr. The DW IR is ventilated and mounted on Sci-Tec tracker. The Dome (Td) and Case Temperature (Tc) are also reported in degrees K. The Net Infrared is also reported which is equal to the Downwelling IR (µV Signal) times the calibration factor K1. | ||||||
| PIR | Downwelling Infrared B | W/m2 | 01/13/2003 | 06/25/2004 | 30835F3 | K0=-9.48693 K1=0.236365 W/m2/µV K2=1.01340 K3=-2.17706 Kr=-7.044e-4 |
| Infrared Irradiance is calculated using: I=K0+VK1+σK2Tr4+σK3(Td4-Tr4), where σ=5.67x10-8 W/(m2K4) (Stephan-Boltzmann's Constant), V=PIR thermopile voltage in µV, and Tr=Tc+VKr. The DW IR is ventilated and mounted on Sci-Tec tracker. The Dome (Td) and Case Temperature (Tc) are also reported in degrees K. The Net Infrared is also reported which is equal to the Downwelling IR (µV Signal) times the calibration factor K1. | ||||||
| HMP-45C | Dry Bulb Temperature and Relative Humidity | oC % |
01/13/2003 | 06/25/2004 | ? | 0.1 oC/mV-40oC 0.1 %/mV |
| Ambient air temperature measured with a Vaisala probe (also measures RH) mounted in a naturally aspirated radiation shield. | ||||||
| (CR23X-T) | CR23X Panel Temperature | oC | 01/13/2003 | 06/25/2004 | - | - |
| CR23X internal temperature sensor is located under wiring panel. | ||||||
| (CR23X-B) | CR23X Battery Voltage | V | 01/13/2003 | 06/25/2004 | - | - |
| CR23X internal battery voltage. | ||||||
| (calc) | Zenith Angle | o | 01/13/2003 | 06/25/2004 | - | - |
| Solar zenith angle (refracted). Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. Prior to June 21, 2004, SOLPOS was used. | ||||||
| (calc) | Azimuth Angle | o | 01/13/2003 | 06/25/2004 | - | - |
| Solar azimuth angle. Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. Prior to June 21, 2004, SOLPOS was used. | ||||||
| (calc) | Airmass | - | 01/13/2003 | 06/25/2004 | - | - |
| Relative optical airmass (not pressure corrected). Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. Prior to June 21, 2004, SOLPOS was used. | ||||||
Notes:
|
||||||