California | Davis(C) | 2001-01-01 | 2001-12-31 | 2002-08-01 | UV-MFRSR Irradiances corrected to compensate for faulty offset values. |
Colorado | Longmont(R) | 2003-06-23 | 2003-09-28 | 2003-10-20 | UV-MFRSR Angular corrections changed from YES file to CUCF file. |
Colorado | Longmont(R) | 2003-06-23 | 2003-10-01 | 2004-01-28 | UV-MFRSR Calibration error corrected. Problem began 2003-10-14. |
New Mexico | Las Cruces (C) | 2000-11-14 | 2000-11-27 | 2004-04-09 | QC flags added for VIS-MFRSR band alignment problem; data unusable. |
New Mexico | Las Cruces (C) | 2003-06-11 | 2004-05-04 | 2004-05-04 | Problem with VIS-MFRSR 665nm channel; data unusable during this time. |
Arizona | Flagstaff(C) | 1997-04-24 | 1997-10-09 | 2004-05-26 | UV-MFRSR Irradiances re-calibrated using CSU board gains. |
Alaska | Fairbanks(C) | 2004-05-21 | 2004-06-15 | 2004-06-16 | QC flags added for VIS-MFRSR band motion problem. |
Hawaii | Waimea(C) | 2004-01-29 | 2004-03-31 | 2004-06-22 | UV-MFRSR Calibration error corrected. |
New Mexico | Las Cruces (C) | 1997-05-01 | 1997-10-22 | 2004-07-01 | UV-MFRSR Calibration error corrected. |
Maryland | Greenbelt(R) | 2004-03-26 | 2004-05-26 | 2004-09-10 | New UV-MFRSR angular corrections & calibration applied. |
Texas | Panther Junction(C) | 2004-08-09 | 2004-10-27 | 2004-10-20 | QC flags added for sudden drop in VIS-MFRSR sensitivity. |
All Locations | All Locations | 2005-01-01 | 2005-01-25 | 2005-01-27 | Erythemal calibration problem for UVB-1 broadband data corrected. |
All Locations | All Locations | 2004-02-01 | 2004-02-10 | 2005-02-05 | Errant "bc2" QC flags pertaining to UVB-1 broadband data removed. |
Colorado | Nunn(C) | 1999-11-10 | 1999-11-11 | 2005-02-07 | QC flags added for ground loop problem in UVB-1 broadband data. |
Maine | Presque Isle(C) | 1998-12-11 | 1998-12-18 | 2005-02-08 | Data's timestep was off by 2 hours. |
Oklahoma | Billings(C) | 2004-06-02 | 2005-02-17 | 2005-03-10 | QC flags added for sudden drop in VIS-MFRSR 610 & 665nm sensitivity. |
California | Holtville(C) | 2004-07-01 | 2005-03-31 | 2005-03-31 | Problem with VIS-MFRSR 665nm channel, data unusable during this time, end of affected period is uncertain. |
Maryland | Beltsville(C) | 2005-07-17 | 2005-08-10 | 2005-08-15 | QC flags added for VIS-MFRSR failure. |
Michigan | Pellston(C) | 2004-07-14 | 2005-08-22 | 2005-08-22 | QC flags for sudden drop in VIS-MFRSR sensitivity added early each month for the previous month. |
Ontario | Toronto(C) | 2005-11-01 | 2006-03-20 | 2006-03-20 | Faulty UV-MFRSR Angular corrections applied. Channel 368 was affected. |
Colorado | Longmont(R) | 2005-11-10 | 2005-12-02 | 2006-03-27 | Angular corrections and calibration data changed to use correct serial number data. |
Louisiana | Baton Rouge(C) | 2005-10-01 | 2006-03-31 | 2006-04-05 | UV-MFRSR Angular corrections changed to a newer file from CUCF |
Louisiana | Baton Rouge(C) | 2006-03-21 | 2006-03-29 | 2006-04-05 | Diffuser Dirty quality control flag was added to the Vis-MFRSR and UV-MFRSR data. Wavelength channel data, PAR data and UVB-1 broadband data was impacted. |
Illinois | Bondville(C) | 2006-03-07 | 2006-04-07 | 2006-04-07 | UV-MFRSR Angular corrections error corrected. |
Florida | Homestead(C) | 2006-01-17 | 2006-10-12 | 2006-10-12 | UV-MFRSR Calibration error corrected. |
New York | Geneva(C) | 2006-07-11 | 2006-10-12 | 2006-10-13 | Wrong calibration factors where applied. |
Montana | Poplar(C) | 2006-11-09 | 2006-11-16 | 2006-11-16 | Broadband calibration factors not applied. |
Oklahoma | Billings(C) | 2006-08-01 | | 2006-12-07 | QC flags for channel failure for open, 415 and 940 added. Data should not be used. |
All Locations | All Locations | 2001-01-01 | 2007-07-02 | 2007-07-02 | Significant improvement in most Calibrated Data after 2001 was implemented on July 2, 2007. Lamp-calibrated irradiance values for the 311, 317, 325, 332, 368 channels have increased, on average, 8.8%, 22.1%, 12.1%, 11.2%, and 4.0% respectively. The 300 and 305 channels are essentially unchanged as well as the Langley calibrated data. |
All Locations | All Locations | 2001-01-01 | 2007-12-11 | 2007-12-11 | As of December 11, 2007, it was found that the Langley calibrated irradiances were in error by about +/- 3.5%. The Langley calibrations are now corrected to properly account for earth-sun distance. Previous Langley Calibrations were about 3.5% too small in January and 3.5% too large in July. Since all irradiances are calibrated at the time of the user's request, any Langley calibrated data will now reflect the proper earth-sun distance factor regardless of the date and time of the measured data. |
All Locations | All Locations | 1994-01-01 | 2007-12-31 | 2008-01-21 | The daily vnaughts for our visible wavelength range have been regenerated using a simple linear regression technique. The previous method, Dr. Joseph Michalsky's Forgan technique has been discontinued. |
Texas | Seguin(C) | 2006-08-01 | 2008-03-31 | 2008-04-30 | Wrong par calibration factor was applied. |
North Carolina | Raleigh(C) | 2007-11-01 | 2008-03-31 | 2008-04-30 | Wrong Broadband calibration factor was applied. |
Maryland | Queenstown(C) | 2006-09-17 | | 2008-11-04 | QC flags for channel failure for 415, 500, and 665 added. Data should not be used. |
New York | Geneva(C) | 2008-06-11 | | 2008-11-04 | QC flags for channel failure for 415, 500, 610 and 940 added. Data should not be used. |
Arizona | Flagstaff(C) | 2001-11-02 | 2008-11-21 | 2008-11-21 | The 311 channel was using a wrong gain factor in our calibration process. The errant gain factor used, increased the calibrated irradiance value by 1.6222. |
Hawaii | Waimea(C) | 2001-01-22 | 2001-03-27 | 2008-11-26 | The 311 channel is saturated. Added the quality control flag to designate the saturation. Data for this channel should not be used. |
New York | Geneva | 2006-07-11 | 2006-09-01 | 2009-03-16 | Wrong serial number used. |
Colorado | Steamboat Springs | 2002-05-30 | 2003-03-10 | 2009-04-15 | UV-MFRSR Angular corrections error corrected. |
Oklahoma | Billings | 2003-04-11 | 2004-11-19 | 2009-04-15 | UV-MFRSR Angular corrections error corrected. |
California | Holtville | 2005-02-17 | 2009-04-15 | 2009-04-15 | UV-MFRSR Angular corrections error corrected. |
Minnesota | Grand Rapids | 2003-09-11 | 2004-07-20 | 2009-04-16 | UV-MFRSR Angular corrections error corrected. |
Maine | Presque Isle | 2004-09-15 | 2005-10-07 | 2009-04-16 | UV-MFRSR Angular corrections error corrected. |
Vermont | Burlington | 2004-10-20 | 2009-04-16 | 2009-04-16 | UV-MFRSR Angular corrections error corrected. |
Saskatchewan | Regina | 2005-09-14 | 2006-07-26 | 2009-04-16 | UV-MFRSR Angular corrections error corrected. |
All Locations | All Locations | 2006-01-01 | 2009-11-01 | 2009-11-01 | As of November 1, 2009, lamp and Langley calibrated irradiances received a correction of about +/- 1.5% (typical) to +/-5.0% (maximum).The largest impact is on the early morning and late afternoon direct normal irradiance (low sun angles).The impact on daily sums is minimal.The magnitude of the correction is location dependent - for more information please contact the UVMRP staff. |
Texas | Seguin(C) | 2004-03-16 | 2005-06-17 | 2010-03-23 | The erythemal value was 0, it now has an accurate value. |
Colorado | Steamboat Springs(C) | 2006-09-25 | 2006-09-26 | 2011-01-13 | Data not corrected, serial number was missing |
Colorado | Lamar(C) | 2010-08-01 | | 2012-05-15 | Problem with VIS-MFRSR 500nm and 940nm channels, data unusable during this time, end of affected period is uncertain. |
Arizona | Flagstaff(C) | 1997-04-23 | 1997-09-13 | 2014-01-27 | Channel failures caused by loss of sensitivity of photodiode |
Florida | Homestead | 2009-05-12 | 2011-12-31 | 2014-12-05 | PAR value was found to be bad, instrument and been damaged, most likely due to lightning, data is unusable |
Oklahoma | Billings(C) | 2006-08-01 | 2011-06-12 | 2015-08-21 | Board Gains have been changed, will only affect the lamp calibrated irradiances |
Louisiana | Baton Rouge(C) | 2015-08-06 | 2015-08-08 | 2015-08-21 | Board Gains have been changed, will only affect the lamp calibrated irradiances |