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Standardized Calibration Parameters

1. Solar Spectral Irradiance (Thuillier 2002)

2. VIIRS band width, band center, and Esun (in band solar irradiance)

Band Equivalent Width
(um)
Band Center
Wavelength (um)
Esun*1
(W/m2- u m)
Esun*2
(W/m2- u m)
M1 0.0198 0.411 1709.63 1708.68
M2 0.0143 0.444 1902.51 1862.88
M3 0.019 0.486 1988.69 1999.76
M4 0.0209 0.551 1842.40 1869.63
M5 0.02 0.672 1504.55 1530.12
M6 0.0146 0.745 1277.38 1280.77
M7 0.0387 0.862 961.28 962.46
M8 0.0271 1.238 455.97 456.87
M9 0.015 1.375 366.15 360.22
M10 0.0587 1.602 250.86 245.30
M11 0.0467 2.257 77.31 75.07
M12 0.192 3.697
M13 0.165 4.067
M14 0.324 8.578
M15 0.990 10.729
M16 0.866 11.845
I1 0.0775 0.639
I2 0.0394 0.862
I3 0.0572 1.602
I4 0.360 3.753
I5 1.75 11.469
DNB3 0.32948 0.69399 0.04708 0.04759
DNB4 0.32038 0.71288 0.04465 0.04511

Notes:

  1. *1In-band solar irradiance computed using Thuillier 2003 spectra; *2In-band solar irradiance computed using the operational
    IDPS version as of 2013 (originated from MODTRAN4.3).
  2. Center wavelength and equivalent band width are computed based on the IDPS version of the VIIRS RSR
    ( https://ncc.nesdis.noaa.gov/VIIRS/VIIRSSpectralResponseFunctions.php)
  3. 3After RSR change in April 2013, unit: w/cm2-sr.
  4. 4Before RSR change in April 2013, unit: w/cm2-sr.

3. VIIRS Inband Solar Spectral Irradiance Esun (W/m2/μm)

 

Band MIN MAX Average STD DEV STD (%)
I1 W/ OOB 1605.7 1609.6 1606.5 0.7 0.044
W/O OOB 1605.2 1610.4 1606.3 1.0 0.062
I2 W/ OOB 961.1 961.9 961.4 0.2 0.021
W/O OOB 960.7 961.5 960.9 0.2 0.021
I3 W/ OOB 250.3 251.5 250.8 0.4 0.159
W/O OOB 250.3 251.5 250.8 0.4 0.159
M1 W/ OOB 1699.2 1706.7 1704.3 2.7 0.158
W/O OOB 1706.7 1725.7 1720.4 5.0 0.291
M2 W/ OOB 1903.3 1907.7 1906.0 1.4 0.073
W/O OOB 1903.3 1907.7 1906.0 1.4 0.073
M3 W/ OOB 1988.9 1993.3 1991.4 1.0 0.05
W/O OOB 1988.9 1993.3 1991.4 1.0 0.05
M4 W/ OOB 1842.6 1844.3 1843.1 0.5 0.027
W/O OOB 1842.7 1844.3 1843.2 0.5 0.027
M5 W/ OOB 1506.3 1507.9 1507.2 0.5 0.033
W/O OOB 1506.3 1507.9 1507.2 0.5 0.033
M6 W/ OOB 1277.9 1278.8 1278.3 0.3 0.023
W/O OOB 1277.9 1278.8 1278.3 0.3 0.023
M7 W/ OOB 960.6 961.1 960.9 0.1 0.01
W/O OOB 960.2 960.8 960.4 0.1 0.01
M8 W/ OOB 455.8 456.5 456.0 0.2 0.044
W/O OOB 455.8 456.5 456.0 0.2 0.044
M9 W/ OOB 365.6 366.1 365.8 0.2 0.055
W/O OOB 365.6 366.1 365.8 0.2 0.055
M10 W/ OOB 250.5 251.5 250.9 0.3 0.12
W/O OOB 250.5 251.5 250.8 0.3 0.12
M11 W/ OOB 77.2 77.5 77.3 0.1 0.129
W/O OOB 77.2 77.5 77.3 0.1 0.129

Notes:

  1. The solar spectral irradiance used for computation are from the Thuillier 2002, which is available from https://cs.star.nesdis.noaa.gov/NCC/Standards
  2. The VIIRS spectral response functions (or relative spectral response) are from the government team released version, which is available here: https://cs.star.nesdis.noaa.gov/NCC/SpectralResponseVIIRS
  3. The spectral response function used in the current operations may not be from the government team released version, although the differences are very small.
  4. The Esun values presented in the table have been cross verified by at least three independent calculations. If you find discrepancies, please contact: changyong.cao@noaa.gov
  5. OOB= out of band response