SRRL: NREL Pyrheliometer Comparisons (NPC)

NREL Pyrheliometer Comparisons (NPC)

NREL's Solar Radiation Research Laboratory performs annual comparisons of Absolute Cavity Radiometers Intercomparisons for transferring the World Radiometric Reference to international, national, and regional researchers. Reports and Pictures from the following NREL Pyrheliometer Comparisons (NPC) are available:

NPC-1999 (04-10 October 1999): Pictures and Report (PDF 1.2 MB)
NPC-2001 (24-28 September 2001): Pictures and Report (PDF 1.8 MB)
NPC-2002 (23-27 September 2002): Pictures and Report (PDF 1.4 MB)
NPC-2003 (22-24 September 2003): Report (PDF 1.2 MB)
NPC-2004 (27 Sept - 11 Oct 2004): Pictures and Info Packet (PDF 429 KB)
NPC-2006 (25 Sept - 01 Oct 2006): Pictures
NPC-2007 (24 Sept - 27 Sept 2007): Pictures
NPC-2008 (22 Sept - 27 Sept 2008): Pictures and Report (PDF 2.7 MB)
NPC-2009 (28 Sept - 01 Oct 2009): Pictures
NPC-2011 (19 Sept - 24 Sept 2011): Picture Set A and Picture Set B
NPC-2012 (Begins 24 Sept 2012): Picture Set A and Picture Set B

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