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Dr. Richard
C.
Willson
Principal Investigator
ACRIM Experiments
12 Bahama Bend,
Coronado, CA, 92118
Phone: 619-407-7716
Fax: 619-365-9579
E-mail:
rwillson@acrim.com
September 16, 2008
Dear.
Dr.
Scafetta:
Regarding Frohlich's PMOD TSI composite:
1.
Frohlich made unauthorized and incorrect adjustments to the SMM/ACRIM1 and
UARS/ACRIM2 TSI results.
In
the case
of
ACRIM1 he arbitrarily miss-applied the
degradation correction published by the ACRIM1 Science team for the SMM
'spin mode' (1981
-1984)
to the 1980 results. He did this without any detailed
knowledge of the ACRIM1 instrument or on-orbit performance, original analysis
or consultation with the ACRIM1 team. His intent was clearly to revise the solar
cycle
21
TSI to agree with Judith Lean's TSI proxy model.
2.
Frohlich chose the ERBS/ERBE database to 'bridge' the ACRIM gap when it was
clearly inferior to the Nimbus7/ERB gap data. His justification was based
on
hypothetical 'upward steps'
in
the Nimbus7/ERB results ('glitches'
in
Frohlich's
words) that no other researchers, including both the original
PI
(Hickey) and the
final science team (Hoyt and Kyle) believe exist. As with ACRIM1 above, Frohlich
had no detailed knowledge of the Nimbus7/ERB instrument and made no original
analysis or computations. The only obvious purpose appears to be to obtain a
TSI composite that agreed with the predictions
of
Lean's TSI proxy model.
3.
The TSI proxy models, such as Lean's, are not competitive in accuracy or
precision with even the worst satellite TSI observations. To 'adjust' satellite data
to agree with such models is incompatible with the scientific method.
4.
The PMOD TSI composite panders to those who promote anthropogenic causes
as the principal component of global warming, despite mounting evidence to the
contrary. They cite its lack
of
significant TSI trending as evidence
of
relatively
insignificant solar climate forcing during the past 30 years.
sincere~
Dr. Richard
C.
Willson