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Appendix
C
FORMAT FOR SATELLITE BROADCAST OF
SPACE ENVIRONMENT SERVICES
(U)
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Appendix
C
FORMAT FOR SATELLITE BROADCAST OF SPACE ENVIRONMENT SERVICES
(U)
(15 February
1984)
There are seven sixty character
lines.
Each
is
followed
by
a carriage
return and
a
line
feed.
123456789012345678901234567890123456789012345678901234567890
In the examples of
lines,
CAPITAL
letters are caption
information
that appears
as
it does
in the broadcast.
Small
letters represent
data that are explained below.
The
:
Indicates the 61st space
(:
is
not
broadcast).
Any
data
not available
for broadcast will
be
replaced
by
**#.
LINE ONE
- GOES X-RAY AND TOTAL MAGNETIC FIELD
(1
min values broadcast each minute)
doy
hhmm G0ES6
lx.x G0ES5
lx.x B0U TF ggggg GAMMAS
:
347 2153 G0ES6 B2.0 G0ES5 B2.0 BOU TF 55397 GAMMAS
where doy
= day of
year,
such
as 347
hhmm
= hours
and minutes,
such
as 2153
lx.x
= x-ray
level, (1
min avg),
expressed with the B,C,M,X
scale,
where
B
=
10-7 watts
/ meter2, C =
10"6
M
= 10“5 and X
=
10 “4.
X-rays are measured
in
a
1-8 angstrom channel
on the
GOES geosynchronous satellites.
An
Increase
in X-ray
levels
indicates
solar
flare activity.
In the example B2.0
= 2.0
*
10-7
wa++s
/ meter2.
ggggg
» Boulder mag
field
in gammas, (1
min avg),
such
as 55397
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LIME TWO.... GOES GEOSYNCHRONOUS MAGNETIC DATA
(1
minute values broadcast each minute)
G0ES5 HPsgggg HEsgggg HNsgggg G0ES6 HPsgggg HEsgggg HNsgggg
s
G0ES5 HP+0123 HE-0023 HN+0033 G0ES6 HP+0123 HE-0023 HN+0033
where sgggg
= sign
(+ for positive,
-
for negative)
and value
(In gammas)
of the magnetic
field components at
geosynchronous altitudes
(approximately 22,000
miles).
These are measured
by the GOES
(W075)
and GOES
(W135)
satellites. These components
are
HP
(parallel
to the Earth's
rotation ax!s,+
is
north),
HE
(directed earthward,
+
is
down)
and HN
(perpendicular to the other two,
!e east or west,
+
Is west).
Example +0123.
LINE THREE
INDICES
Minute
1MEV
p.pE+p
10MEV p.pE+p
100MEV p.pE+p
PCA aa.aDB NTRN nnnn
:
1MEV 3.1E+0
10MEV 2.5E+0
100MEV
1.2E+0 PCA 00.0DB NTRN 0451
where
p.pEp
= number of protons
/
(sec*cm2#ster)
at greater than
1MEV,
10MEV,or
100MEV energies
(5 mtn avg),
such as 3.1E+0
aa.a
= DB of
polar cap absorption at 30 MHZ as
measured at Thule,
(15 Min value),
such
as 00.0
nnnn
= Thule neutron monitor data
In millivolts
(15 min
value).
The background
level
is 460 to 470 mv.
Significant deviations are + or
-
10$ or
less than
410 mv
and greater than 510 mv.
A sharp
increase
that
lasts
for
a
few tens of minutes to hours
is
a
Ground
Level
Event that
Is caused! by relativistic
particles associated with
solar
flares.
A sig-
nificant decrease
that
lasts
for
several
hours
to several
days
Is
a Forbush Decrease.
This
decrease
is the scattering of background cosmic
rays due to plasma density enhancements
and
associated magnetic
field enhancements
In the
near
earth
solar wind. These enhancements may or
may
not be solar
flare related.
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Minute
aoy
hh-hh
K k/ggg BO Knnnn
nnnn PL Knnnn
nnnn
10CM rrr
347
18-21
K 3/033
BO K3334 333*
PL K4334 433*
10CM
104
where
doy
hh-hh
k/ggg
nnnn
nnnn
rrr
= day of
year
(current day),
such
as 347
= beginning and ending hours
(in Universal
Time or Z)
for the
hr period
of the
K
index to
follow,
such as
18-21
= Boulder K value
/ Gammas
of deflection
from the
quiet day curve,
such
as 3/033
K
indices
determined
so far
for this
day
(Boulder
or planetary). The
first value
Is
for 00Z-03Z,
and each
index
is
for the
3 Hr period
following
the K
index preceding
it.
Missing values
will
have an
*.
Example
3324 333* or 4334 433*
10 CM solar radio
flux
In Solar Flux Units,
(10"zz watts
/
(meterz*Hz))
as measured
by
Ottawa
at approximately
1700Z each
day.
This value
for the doy
indicated
at the start of the
line.
Until
this value
Is available *** will
be broadcast,
Example
104
s
Minute
doy
B0 Aaaa Knnnn
nnnn
PL
Aaaa Knnnn
nnnn TEDttt
:
346 BO A0 17 K3334 4323
PL A024 K4333 4434 TED***
where
doy
= day of
year
(yesterday),
such
as 346
aaa
- A
index
(Boulder or Planetary)
for yesterday,
such
as
017,
or 024
nnnn
nnnn
=
K
indices
(Boulder
or Planetary)
for yesterday,
(starting at 00-03Z) missing values
will
contain
*.
Example 3334 4323 or 4333 4434
ttt
= Total
Energy Deposition,
an estimate of the
total
power being dissipated
In
one hemisphere's
auroral
atmosphere by precipitating particles.
The
units
are gigawatts.
This
is
a daily average
for the doy
indicated.
Estimates
are made
using particle data
from Tiros satellites.
Daily averages vary
from
near 005 on
a quiet day
up
to about
100 on
a very
active day.
If this
data
is unavailable *** will
be
used.
Example ***
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Minute
doy
10CM rrr 90 DAY MEAN mmm SSN sss XRAY BGD
lx.x
346
10CM
104
90 DAY MEAN
110 SSN 090 XRAY BGD B2.5
where
doy
= day of
year
(yesterday),
Such
as 346
rrr
=
10 CM solar
radio flux
in Solar Flux Units,
for
1700Z on
doy
Indicated,
such
as
104
mmm
= 90 day mean
of the
10 CM Solar
radio
flux
through
yesterday,
such
as
110
sss
= Sun Spot Number
for yesterday,
such
as
090
lx.x
= Xray Background
level
for yesterday expressed on
the B,C,M,X scale,
where B =
10“7 watts
/ meter2
C =
10“°,
M
=
10“*,
and X
=
1 0"4 ,
I n the example,
B2.5
= 2.5
*
10-7
Watts
/ meter2.
Minute 4
doy G0ES5
(W075)
FLUENCE
1MEV
f.fE+f
10 MEV f.fE+f
:
346 G0ES5
(W075)
FLUENCE
1MEV 2.8E+4
10 MEV 5.2E+3
where
doy
= day of
year
(yesterday),
such
as 346
f.fE+f
= dally total
fluence
(protons
/
(cm2#<jay*ster)
)
greater than
1MEV or
10MEV
(as
indicated) expressed
as
an exponential
number,
such as 2.8E+4,
or 5.2E+3
LIME FOUR.... HOURLY
IONOSPHERIC DATA
Each
24 hour set of data will
take
3 minutes to transmit
(8 hours of data per
line).
EMPTY
indicates that
no data
is being transmitted.
sss
ddddd doy
hh
nn.n
nn.n
nn.n
nn.n
nn.n
nn.n
nn.n
nn.n
BOU TEC
347
16 09.5
14.0 20.3 22.8 22.3 22.8 **** ****
where
sss
— station
Identifier such as
BOU:
ddddd
= data
Identifier,
such
as TEC
(Total
Electron
Count), F0F2
(Critical
Frequency
of the F2 Layer),
M3000
(Optimum Frequency
for
a Single Hop 3000 KM
Transmission),
FMIN
(Minimum Usable Frequency),
or FOES
(Critical
Frequency
of
the Sporadic
E Layer)
.
hh
= hour of
first data group,
such
as
nn.n
= data group.
There are eight consecutive data
groups.
Missing data,
or data
not yet
determined will
have ****.
Data
ifor TEC
Is
in
units
of
10+16 electrons
/ meter2,
for the others
It
is MHZ.
Example 09.5
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LINE FIVE.... FORECASTS
AND WARNINGS
Minute
doy-doy Mnn/nn/nn Xnn/nn/nn Pnn/nn/nn
lOCMrrr/rrr/rrr/rrr
:
348-350 M0 1/0 1/01
X01/01/01
P01/01/01
10CM1 02/ 100/098/***
where doy-doy
=
day of
year,
first
and
last days of the
forecast
nn/nn/nn
=
percent probability
for occurrence of activity
on the
first,
second,
and
last day of
the
forecast.
These apply to M flares,
X
flares,
or Proton events
as
indicated.
Example 01/01/01
rrr/rrr/rrr/rrr
=
forecast
10 CM solar radio
flux
for the
forecast
days,
such
as
102/100/098/*** The
last group
of
rrr
is
for the
last doy plus one and
will
be ***
until
approx
18z on the
first
doy.
At this time
values
will
be added.
Minute
doy-doy AFaaa/aaa/aaa APaaa/aaa/aaa Kkkkk kkkk kkkk kkkk
:
348-350 AF01 8/015/01 5 AP020/020/020 K**** **33 3444 3333
day of
year,
first and
last days of the
forecast
forecast A values
for the
forecast per iod, either
AF,
or AP as
indicated.
Example 018/015/015,
or
/20/20
Forecast KP values
(without the 0,+,or-).
The
first of these
16 consecutive K values
is
for 00Z through 03Z on the
first
doy
listed.
Once
a
forecast
K value
has
been measured
it will
appear
in
line two and the
forecast value
In this
line
will
be replaced
by an
*.
Example **** ***3
3444 3334.
At approximately
18Z the remaining
values will
be updated with
a
new
forecast.
Minute 2
I
I
I
I
I
I
I II
I I...
:
MAGALERT MINOR
where
11111...= Description of
forecast magnetic activity
This
will
usually
be:
which
indicates:
MAGQUIET
only sporadic weak
geomagnetic activity
where doy-doy
=
aaa/aaa/aaa
=
kkkk kkkk kkkk
=
kkkk
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MAGALERT JJ/KK or
Increase
in
or continued
MAGALERT MINOR JJ/KK
high magnetic activity
(JJ/KK are the
first
and
last calendar days of
activity)
MAGNIL
end
of active period
or beginning
of
period
of
very
low activity
(used to end alerts)
Minute
II
1 ...
:
PR0T0NNIL
where
11111...= Description of
forecast proton activity
This will
usually
be:
which
Indicates:
PR0T0NQUIET
no proton enhancements measured
In,
or
forecast
for the
near
earth environment.
PROTON FLARE ALERT JJ/KK QXXYY
Protons expected
near earth
because the solar region
located
In quadrant
Q
(1=NE,
2=SE,
3=SW,
4=NW),
Central
meridian
distance XX,
latitude
YY,
has
a
15$ or greater
probabilty of
a proton
flare
from days
JJ to KK
PROTON ARRIVAL ALERT PP/FF HHmm
Protons expected
near earth
on
day PP
from flare which
occurred on
day FF
at HHmm
Protons expected to meet the
SESC alert criteria
(see
line
ALERTS)
in the near earth
environment from days
JJ
to KK
end
of active period
or begining
of period
of very
low activity
(used to end
alerts)
PR0T0NALERT
JJ/KK
PR0T0NNIL
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LINE FIVE
FORECASTS AND WARNINGS
(continued)
Minute
II
I
I
1 ...
:
SOLQU
I ET
where
11111...= Description of
forecast solar activity
This will
usually
be:
which
Indicates
S0LQUIET
only sporadic weak solar activity,
(class C or smaller
flares)
S0LALERT JJ/KK
M Class
flares,
or
an
i ncrease
in M
level
activity
from days
JJ
to KK
MAJOR FLARE ALERT JJ/KK QXXYY
region
located
at QXXYY
(see minute
3)
has
a
15?
or greater prob of
X class
flares
from days
JJ to KK
S0LNIL
end
of active period or begin
I ng
of
period
of
very
low activity
(used to end alerts)
LINE
SIX.... ALERTS
(rotates through
all
activated alerts)
I
I
I
I
1 I.
:
ALERT NIL
where
11111...= descriptive text of alert conditions that are met
These are The current alerts
0. ALERT NIL
(when
no alerts are turned on)
1.245 MHZ BURST
>
100 SFU
2.245 MHZ RADIO NOISE
STORM
>
5 TIMES
BKGND
3.10 CM FLARE
>
100? ABOVE BKGND
4.
TYPE
II
RADIO BURST
5.
TYPE
IV RADIO BURST
6. SUSPECTED PROTON FLARE
7. PROTON EVENT
PART/CM2*SEC*STER
>
10 MEV
8 PROTON EVENT
100 PART/CM2*SEC*STER
>
100 MEV
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(the numbers are
9.XRAY
>= M5
transmitted with
10.XRAY
>=
XI
the alerts)
11. A
INDEX
>= 20
(B0U)
12. A
INDEX
>= 30
(B0U)
13. A
INDEX
>=
(B0U)
1 4.K
INDEX
>=
(B0U)
15. K
INDEX
>=
(B0U)
1 6.K
INDEX
>=
(B0U)
17. K
INDEX
>=
5-5
(B0U)
(forecast or observed)
ti
«
«
•i
ii
ii
(fcst, obsvd,or
in
progress)
ft
ft
It
tf
tl
ft
tf
It
tl
M
ff
It
It
tl
It
18. SUDDEN
STORM COMMENCEMENT
(forecast or observed)
1 9 STRATWARM
2o!sST ALERT:
RADIATION
>=
10 MILL
I REMS
(forecast or
observed)
LINE
SEVEN... MESSAGES
I
I
I
I
1 ...
where
11111...= unformatted message with
up to 60 characters
will
sometimes
be broadcast
in this
line.
Messages that
will
take more than one
line will
be broadcast
sequentially over
several
minutes.
These sequential
messages will
start with MMMM at the beginning of
the
first
line.
NNNN at the beginning of
a
line
will
Indicate that the message
Is complete.
In the
future routine products will
be transmitted
using this
line at preselected times.
A tentative
schedule of these
products
follows:
PRODUCT
TIME
Current message schedule
00Z
SMM
(Solar Maximum Mission)
Observing Plan
Region Report
(body of 0030Z report)
27 Day Forecast
0 1Z,07Z, 1 3Z,
1 9Z
02Z,08Z,14Z,20Z
03Z,09Z,15Z,21Z
SGAS
(Solar Geophysical
Activity Summery)
04Z,10Z,16Z,22Z
(body of 0245Z report)
SDF
(Report of Solar and Geophysical
Activity. .formerly Space Disturbance
05Z, 1 1Z, 17Z,23Z
Forecast)
(text portion of 2200Z
report)
GEOALERT
(body of 0330Z GEOALERT)
06Z,12Z,18Z
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