2.
Response
to
Comments
2.9
Individual
Responses
to
Comments
from
Organizations
changes
to
a
baseline
that
has
not
been
calibrated
to
actual
sailing
conditions.
Not
calibrated
means
that
the
absolute
values
of
a
baseline
give
no
information
since
it
is
unknown
how
such
values
correspond
to
actual
sailing
conditions.
An
uncalibrated
value
is
simply
a
number.”
Calibration
is
not
required
in
order
to
understand
the
effects
of
Project
Site
development
on
winds
in
the
CPSRA.
Although
there
may
be
no
“calibrated”
meteorological
stations
available
to
guide
windsurfers
at
Brisbane,
it
is
still
possible
for
each
wind
surfer
to
correlate
his
or
her
personal
experience
with
the
reported
wind
speeds
from
one
or
more
nearby
“informal”
meteorological
stations
or
anemometers,
regardless
of
calibration.
In
effect,
windsurfers
learn
by
experience
how
to
apply
such
wind
speed
information
to
their
personal
wind
sailing
activities.
For
windsurfers,
the
relevant
questions
are
“What’s
the
wind
prediction
for
this
afternoon?”
and
“Is
it
windy
enough
or
too
windy
to
go
out
today?”
The
results
of
the
wind
testing
provide
a
simple
and
straightforward
approach
to
determining
the
relative
effects
of
proposed
Baylands
development
for
many
recreational
windsurfers.
If
a
windsurfer’s
experience
indicates
that
a
wind,
which
may
be
reported
by
a
certain
anemometer
as
being
(for
example)
13
mph,
enables
them
to
easily
achieve
planing
at
their
favorite
sailing
location,
this
fact
is
useful
in
a
very
practical
sense,
even
if
it
does
not
necessarily
mean
that
the
wind
speed
that
actually
occurs
over
the
water
where
the
windsurfer
is
sailing
is
the
same
as
the
speed
actually
recorded
at
the
anemometer,
or
is
actually
13
mph.
Measurements
of
relative
wind
speed
and
turbulence
intensity
were
made
for
the
existing
scenario
and
project
scenarios
in
an
atmospheric
boundary
layer
wind
tunnel
and
the
wind
speed
ratios
were
then
calculated.
It
is
well
documented
in
the
scientific
literature
(Davenport
and
Isyumov,
1968;
Cermak,
1971;
Cook,
1975;
Hunt
and
Fernholz,
1975;
and
others)
that
the
atmospheric
boundary
later
wind
tunnel
can
correctly
represent
wind
velocity,
wind
turbulence,
and
the
power
spectrum
of
the
wind.
For
more
detail
about
the
wind
tunnel
analysis,
see
The
surface
roughness
of
landforms
and
buildings
slows
the
prevailing
winds
approaching
the
CPSRA
and
the
differences
in
surface
roughness
result
in
natural
variations
in
wind
speed
and
turbulence
along
the
shoreline
that
then
extend
over
the
surface
of
the
CPSRA
and
the
test
grid
(i.e.,
including
effects
such
as
“wind
shadow”).
The
wind
tunnel
measurements
provide
data
that
quantify
the
surface-
roughness-generated
variations
in
wind
speed
and
turbulence
in
the
CPSRA
for
any
given,
constant
approaching
wind
speed.
(See
the
plots
in
Appendix
J.1
of
the
Draft
EIR).
Brisbane
Baylands
Final
EIR
2.9.4-16
May
2015