NOAA KLM User's Guide

Appendix P

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APPENDIX P: Fundamental Constants

NOAA/NESDIS uses the following fundamental constants in radiation calculations for all operational satellite systems. They are adopted from the1998 Committee on Data for Science and Technology (CODATA) of the International Council of Scientific Unions (CODATA,1998).

The fundamental constants include the speed of light (c), The Boltzman constant (k), and the Planck constant (h). The 1998 CODATA values are:

c = 299,792,458 m/sec

k = 1.38065030 x 10-23 J/deg K

h = 6.62606876 x 10-34 J sec

Thus, the Planck formula constants are:

c1 = 1.1910427 x 10-05 mW/(m2 sr cm-4)

c2 = 1.4387752 cm K

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