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October 28, 2010
Daily Space Weather Indices
=========================================================================
GOES 15 Designated Primary X-ray Satellite
October 28, 2010 -- GOES 15 replaced GOES 14 as the Primary SWPC GOES
X-ray Satellite and be used for the Daily X-ray Background Flux.
===========================================================================
This directory containts the last 75 reports issued.
Update Schedule: 0015, 0615, 1215, 1815 UTC daily
Period covered: Previous UTC day.
Description:
A collection of daily space weather indices for a UT day.
See sample and complete description below.
Available:
via SWPC Anonymous FTP server ftp.swpc.noaa.gov.
/pub/latest/dayind.txt --- previous UT day
/pub/latest/curind.txt --- current UT day
/pub/indices/dayind/ --- last 75 reports
via SWPC Web site:
http://www.swpc.noaa.gov/ftpdir/latest/dayind.txt
http://www.swpc.noaa.gov/ftpmenu/indices/dayind.html
via the NOAA Weather Wire service,
http://www.swpc.noaa.gov/wwire.html
See http://www.swpc.noaa.gov/Data/ for tables of all online data
at SWPC, including links to non-SWPC sources for older data.
Please send questions, suggestions, and problem reports to
SWPC.Webmaster@noaa.gov
----------------------------------------------------------------------
SAMPLE
:Product: Daily Space Weather Indices dayind.txt
:Issued: 2009 Nov 17 1815 UT
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
# Daily Space Weather Indices
#
#
:Solar_Indices: 2009 Nov 16
# SWO Sunspot Penticton Radio 90-day Radio GOES-10 X-ray Stanford Solar
# Number Flux 10.7cm Flux 10.7cm Bkgd Flux Mean Field
12 76 72 A0.0 -999
#
:Solar_Region_Data: 2009 Nov 16
# --------- Flares ---------
# Sunspot Area New Spotted X-ray Optical
# 10E-6 Hemis. Regions Region C M X S 1 2 3 4
10 0 1 0 0 0 0 0 0 0 0
#
:Solar_Radio_Flux: 2009 Nov 16
# Learmonth San Vito Sag Hill Penticton Penticton Palehua Penticton
# 0400 1100 1600 1700 2000 2200 2300
245 13 11 12 -1 -1 12 -1
410 28 33 27 -1 -1 29 -1
610 33 -1 38 -1 -1 40 -1
1415 58 60 61 -1 -1 62 -1
2695 75 78 79 -1 -1 78 -1
2800 -1 -1 -1 77 76 -1 75
4995 121 117 128 -1 -1 120 -1
8800 204 197 222 -1 -1 223 -1
15400 531 511 530 -1 -1 533 -1
#
:Particle_Data: 2009 Nov 16
# GOES-11 Proton Flux GOES-11 Electron Flux GOES11 Neutron
# ---- Protons/cm2-day-sr ---- - Electrons/cm2-da-sr - Location Monitor
# ->1 MeV >10 MeV >100 MeV >0.6 MeV >2 MeV West % of bkgd
3.47e+05 2.02e+04 4.34e+03 1.46e+08 4.82E+04 135 97.0
#
:Geomagnetic_Indices: 2009 Nov 16
# Middle Latitude Middle Latitude
# ----- Fredericksburg ----- --------- Boulder ---------
# A K-indices A K-indices
# 03-06-09-12-15-18-21-24 03-06-09-12-15-18-21-24
0 0 0 0 0 0 0 0 0 2 0 0 1 1 1 2 0 1
# High Latitude Estimated
# --------- College --------- -------- Planetary --------
# A K-indices A K-indices
# 03-06-09-12-15-18-21-24 03-06-09-12-15-18-21-24
0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 0
==============================================================================
==============================================================================
Description
Solar_Indices
SWO Sunspot Number: The sunspot number for the indicated date is computed
according to the Wolf Sunspot Number equation, R=k (10g+s), where g is th
number of visible sunspot groups (or regions), s is the total number of
individual spots in all the groups, and k is a variable scaling factor
(usually <=1) that indicates the combined effects of observing conditions,
telescope, and bias of the solar observers. A sunspot number of zero
indicates there were no visible sunspots on that date; a blank indicates
that no observations were taken. The sunspot region information used to
compute the daily sunspot number incorporates reports from at least one
to as many as six observatories. These reports are used to form a composite
picture of each individual region, including sunspot number, area and
classification, taking into account such factors as the time of observation
and the quality of seeing. This composite information is the daily average
(evaluated by seeing conditions) obtained from the reporting observatories
and may not represent the latest data. It is reported daily in the Solar
Region Summary.
Penticton and 90-Day Radio Flux: The 10.7 cm (2800 MHz) full Sun radio flux
reported by the Dominion Radio Astrophysical Observatory at Penticton, B.C.,
Canada on the date indicated. Measurements are made at approximately
2000 UTC. Values are in solar flux units of 10-22Wm-2Hz-1 and are not
corrected for the variable Sun-Earth distance resulting from the eccentric
orbit of the Earth around the Sun. The 90-day radio flux is the mean value
for the last 90 days.
X-ray Bkgd Flux: The daily GOES x-ray background flux from the primary GOES
satellite. Note: X-ray flux values below the B1 level are not as reliable
as energetic electron contamination of the x-ray sensors becomes dominant
at low levels. At times of high electron flux at geosynchronous altitude,
the x-ray measurements in the low A-class range can be in error by 20-30%.
Daily GOES X-ray Background Flux algorithm:
o The 24 one-hour X-ray 1-8Angstrom values are divided into three
8-hour sections
o The minimum for each of these three 8-hour sections is determined;
à...call them min1, min2, and min3
o The average of the minima from the first and last 8-hour sections
is calculated, min_avg = 1/2 (min1 + min3)
o Daily Background X-Ray Flux is the smallest of min2 or min_avg
X-Ray_background = minimum of (min2 or min_avg)
Stanford Solar Mean Field: Beginning October 2, 2000 SEC stopped distributing
the Stanford Solar Mean Field values. This field is now always -999. The
Stanford Solar Mean Field represents the mean value of the solar magnetic
field expressed in NT, where negative polarity (oriented toward the Sun)
or positive (oriented away from the Sun). These measurements continue to
be taken at the Stanford University Wilcox Solar Observatory
http://wso.stanford.edu/#MeanField
Solar_Region_Data
Sunspot Area: Sum of the corrected area of all observed sunspots, in units
of millionths of the solar hemisphere.
New Regions>: the number of new sunspot regions numbered during the UTC day.
Spotted Regions: the number of sunspot regions observed during the UTC day.
Flares: The total number of x-ray and optical and flares observed during
the UTC day.
Solar_Radio_Flux
The Solar Radio Flux list contains Central Meridian Passage (local noon)
flux values from the Dominion Radio Astrophysical Observatory, Penticton,
Canada and the US Air Force Radio Solar Telescope Network (RSTN) sites.
The RSTN sites are Learmonth, Australia; San Vito, Italy; Sagamore Hill,
Mass.; and Palehua, Hawaii. Each RSTN site measures the solar radio flux
within one hour of their local noon. Penticton records values 3 times a
day with the 2000 UTC value being closest to local noon. The output is a
table with one row for each frequency and one column for each site. The
value is the flux, missing values are shown as -1. Values range from 1
to 999.
Particle_Data
The Particle Data list contains daily 5-minute averaged integral proton
flux (protons cm-2 s-1 SR-1) and integral electron flux (electrons
cm-2 s-1 SR-1) as measured by the primary GOES satellite for the
following energy levels: protons, >1, >10, and >100 MeV; electrons, >0.6
and >2 MeV. The GOES spacecrate location is given in degrees longitude.
Neutron monitor readings are measured by a sensor located in Thule,
Greenland and are expressed as percent of background.
Missing proton and electron values are shown as -1.0e+05.
Missing neutron monitor data are shown as -999.9.
Geomagnetic_Indices
Fredericksburg, Boulder, College, and Estimated Planetary A and K Indices:
The daily 24-hour A index and eight 3-hourly K indices from the
Fredericksburg and Boulder (middle-latitude), and College (high-latitude)
USGS stations monitoring Earth's magnetic field. The estimated planetary
24 hour A index and eight 3-hourly K indices are derived in real time from
a network of western hemisphere ground-based magnetometers. K indices range
from 0 (very quiet) to 9 (extremely disturbed). A indices range from 0
(very quiet) to 400 (extremely disturbed). An A index of 30 or greater
indicates geomagnetic storm conditions.
========================================================================
========================================================================
========================================================================
OLD NOTICES
=========================================================================
GOES 15 Designated Primary X-ray Satellite
October 28, 2010 -- GOES 15 replaced GOES 14 as the Primary SWPC GOES
X-ray Satellite and be used for the Daily X-ray Background Flux.
=========================================================================
At 0000UT OCTOBER 28
GOES 15 Will Replace GOES 14 as Primary Satellite for XRS data
October 13, 2010: At 0000 UT October 28 GOES 15 will replace GOES 14
as the Primary SWPC GOES X-ray Satellite and be used for the Daily X-ray
Background Flux. GOES 14 is being moved into storage.
==========================================================================
Thule Neutron Monitor Daily Percent of Background
To Be Discontinued
June 1, 2010 SWPC discontinued the Daily Thule "Neutron Monitor Percent of
Background" field in the Daily Space Weather Indices report.
The field will not be removed but will contain -999.9
For more details, alternative sources, and SWPC contact information.
See http://www.swpc.noaa.gov/Thule.html
==========================================================================
GOES 13 Designated Primary Satellite for
Proton, Electron and Magnetometer Data
April 14, 2010 -- GOES 13 became the Primary SWPC GOES Satellite for the
Proton, Electron and Magnetometer instruments and GOES 11 was designated
the Secondary Satellite. GOES 12 is being decommissioned.
GOES 13 is drifting to the GOES West longitude. It will be at West 75 by
April 26, 2010.
Revised Geometrical Factors for GOES 13, 14 and 15 EPEAD Electron Channels
See the SWPC GOES Satellites web page for details and a list of changed
products. http://www.swpc.noaa.gov/Data/goes.html
Send comments and questions to SWPC.CustomerSupport@noaa.gov
==========================================================================
Thule Neutron Monitor Daily Percent of Background
To Be Discontinued
April 20, 2010 -- On 01 June, SWPC will discontinue the Daily Thule "Neutron
Monitor Percent of Background" field in the Daily Space Weather Indices report.
The field will not be removed but will contain -999.9
For more details, alternative sources, and SWPC contact information.
See http://www.swpc.noaa.gov/Thule.html
==============================================================================
On April 14, 2010
GOES 13 will be designated Primary Satellite for
Proton and Electron Data
April 5, 2010: On Wednesday, 14 April, GOES-13 will become the Primary
SWPC GOES Satellite for the Proton and Electron instruments.
GOES-13 Proton Flux and Electron Flux data will replace GOES-11 on
the Daily Space Weather Indices.
See http://www.swpc.noaa.gov/Data/goes.html
==============================================================================
Solar Radio Flux Data
No Air Force 245, 410, and 610 MHz Data Until Further Notice
March 5, 2010 -- The Air Force RSTN sites (Learmonth, San Vito, Sagamore Hill
and Palehua) have taken their 28ft antennas out of service due to safety
concerns with the gearing mechanism that positions the antenna. Affected
frequencies are 245, 410 and 610 MHz. As a result, SWPC will not be receiving
IFLUX or BURST data from these three frequencies until further notice.
The estimate to repair the Learmonth site is at least 15 weeks. The other
sites may resume soon if they are not affected by the problem.
SWPC Products effected:
o Solar Radio Flux Data Lists and Radio Burst Event Lists /radio
o Current Space Weather Indices, and Daily Space Weather Indices
/latest/curind.txt and dayind.txt and /indices/dayind/
o Solar Indices Log http://www.swpc.noaa.gov/alerts/solar_indices.html
======================================================================
GOES 14 BecamePrimary Satellite for XRS data
No Secondary Satellite for X-rays or Electrons and Protons
December 1, 2009: GOES 14 X-ray Background Flux on the Daily Space
Weather Indices. GOES 11 continues for Proton and Electron Daily Fluence.
==============================================================================
GOES 10 Decommissioning Dec 1, 2009
GOES 14 Becomes Primary Satellite for XRS data
No Secondary Satellite for X-rays or Electrons and Protons
November 17, 2009: On Tuesday, 01 December, the GOES 10 satellite will
be officially decommissioned. At that time, GOES 14 will replace GOES 10
as the Primary SWPC GOES X-ray Satellite.
GOES 14 X-ray Background Flux will appear on the Daily Space Weather Indices.
GOES 11 continues for Proton and Electron Daily Fluence.
==============================================================================
GOES 10 Becomes Primary X-ray Satellite, no Secondary Satellite
February 11, 2008 -- GOES 11 X-ray data has been unavailable since Feb. 10.
The expectation is that GOES 11 X-rays will remain unavailable. Other GOES
11 data is still available.
GOES 10 has been moved to the primary SWPC X-rays data. There is no
secondary GOES X-ray data at this time. GOES 10 data resumed at 1630 UT
Feb 10 and will continue indefinitely.
========================================================================
Primary GOES X-ray Satellite Changed to GOES 11
June 2006, Due to an anomaly on the GOES 12 X-ray Sensor (XRS) SEC has changed its
Primary GOES X-ray satellite designation to GOES 11.
Several reports on this menu have header or transparent changes.
See details at http://www.sec.noaa.gov/GOES.html
========================================================================
!!!!! Another GOES Satellite Change !!!!!
May 15, 2003 -- GOES 12 is now SEC's primary GOES satellite, except
for energetic proton detectors where GOES 8 is primary. GOES 10
is the backup. GOES 8 is used for integral proton flux values.
The GOES 12 electron flux algorithm reliance on the P6 channel
has been eliminated.
X-ray Bkgd Flux, Flares, Electron Flux, and GOES locations are
from GOES 12. Proton Fluxes are from GOES 8.
Several reports on this menu have header or transparent changes.
See details at http://www.sec.noaa.gov/GOES.html
========================================================================
!!!!! NOTICE GOES Satellite Changes !!!!!
!!!!! GOES 8 Ended, GOES 12 Begins !!!!!
April 8, 2003 SEC stopped using GOES 8 data.
GOES 10 is now SEC's primary GOES satellite, with GOES 12 the backup
for non-SXI data: magnetometer, XRS x-ray measurements, and energetic
particles. However, no integral particle and electron flux values
available on GOES 12.
The X-ray Bkgd Flux in the Solar Indices Section, and most fields in
the Particle Data section changed to GOES 10 data.
See details at http://www.sec.noaa.gov/GOES.html
========================================================================
November 2002
Daily Space Weather Indices
Daily Space Weather Indices contains key solar-geophysical indices from
the previous UTC day. Note, some values are not available at the time of
the initial messages.
This directory contains the last 75 messages, as ascii files, with filenames
that contain the month and day of the data. The latest message is in the
statically named file dayind.txt which is accessible via SEC's anonymous
FTP server at ftp.sec.noaa.gov get /pub/latest/dayind.txt
via web browser at http://www.sec.noaa.gov/ftpdir/latest/dayind.txt