NPCS Instrument Descriptions and Histories
| Model | Measurement Notes (below) |
Units | Install Date |
Removal Date |
Current SN |
Current CF |
|---|---|---|---|---|---|---|
| CMP3 | Global Horizontal | W/m2 | 03/23/2006 | 05/10/2007 | 050023 | 75.24 W/m2/mV |
| 05/10/2007 | 08/09/2007 | 25818F3 | 114.10 W/m2/mV | |||
| 08/09/2007 | - | 050023 | 73.941 W/m2/mV | |||
| [DQS]
[Maint] |
Total Hemispheric shortwave irradiance as measured by an Kipp & Zonen Model CMP3 Pyranometer with calibration factor traceable to the World Radiometric Reference (WRR). | |||||
| NIP | Direct Normal | W/m2 | 03/23/2006 | 04/26/2007 | 34528E6 | 123.76 W/m2/mV |
| 04/26/2007 | 08/09/2007 | 30575E6 | 113.78 W/m2/mV | |||
| 08/09/2007 | 06/24/2008 | 34528E6 | 122.68 W/m2/mV | |||
| 06/24/2008 | 07/11/2008 | 30575E6 | 113.44 W/m2/mV | |||
| 07/11/2008 | - | 34528E6 | 122.67 W/m2/mV | |||
| [DQS]
[Maint] |
Direct (Beam) shortwave irradiance as measured by an Eppley Laboratory, Inc. Model NIP (Normal Incidence Pyrheliometer) mounted in an automatic sun-following tracker, with calibration factor traceable to the WRR. The estimated broadband Aerosol Optical Depth (AOD) is also calculated using this instrument. | |||||
| (calc) | Diffuse Horizontal | W/m2 | 03/23/2006 | - | ||
| [DQS]
[Maint] |
Diffuse (Sky) shortwave irradiance is calculated using the formula: Global = Direct * Cosine(Zenith) + Diffuse. | |||||
| HMP50 | Dry Bulb Temperature and Relative Humidity | oC % |
03/23/2006 | - | A4450053 | 0.1 oC/mV-40oC 0.1 %/mV |
| [DQS]
[Maint] |
Ambient air temperature measured with a Vaisala probe (also measures RH) inside in a naturally aspirated radiation shield mounted on a tower. The dew point temperature is also calculated using both the temperature and RH. The wind chill temperature is also calculated using the new National Weather Service (NWS) method as described on the NOAA web site, however the wind speed used is measured on the roof at approx. 10' instead of the 5' level required by the NWS calculation. | |||||
| 03001 | Wind Speed and Wind Direction | m/s | 03/23/2006 | - | 1 | 0.75 m/s/Hz+0.2m/s 0.142 o/mV |
| Measured by an RM Young 3-cup anemometer and vane is mounted 10.5 feet above ground level on the roof. Peak Wind Speed is also recorded, which is the the maximum 1-sec anemometer reading during the 1-minute interval. | ||||||
| TB4 | Precipitation Gauge (tipping bucket) | mm | 03/23/2006 | - | 1 | 0.254 mm/count |
| [DQS]
[Maint] |
The Hydrological Services tipping bucket precipitation gauge is mounted 10 feet above ground level on the roof. The accumulated daily precipitation is also recorded. | |||||
| CR10X-T | CR10X Temp | oC | 03/23/2006 | - | ||
| CR10X internal temperature. | ||||||
| CR10X-B | CR10X Battery Voltage | oC | 03/23/2006 | - | ||
| CR10X external battery voltage. | ||||||
| (calc) | Zenith Angle | o | 03/23/2006 | - | ||
| Solar zenith angle (refracted). Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. | ||||||
| (calc) | Azimuth Angle | o | 03/23/2006 | - | ||
| Solar azimuth angle. Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. | ||||||
| (calc) | Airmass | - | 03/23/2006 | - | ||
| Relative optical airmass (not pressure corrected). Calculated after datacollection (outside the datalogger) using the Solar Position Algorithm (SPA) and added to the datastream. | ||||||
Notes:
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