home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
ftp.sec.noaa.gov
/
2014.05.ftp.sec.noaa.gov.tar
/
ftp.sec.noaa.gov
/
pub
/
forecasts
/
dayobs
/
README
< prev
Wrap
Text File
|
2008-01-06
|
4KB
|
105 lines
January 3, 2008
Space Weather Prediction Center
Summary of Space Weather Observations
The Summary of Space Weather Observations is a daily report of solar
regions with sunspot groups observed on the preceding day. See sample
and description below.
The SWPC Solar Region Summary is a similar daily report that also
contains H-alpha Plages without Spots, and Regions Due to Return
in the next 3 days. See http://swpc.noaa.gov/ftpmenu/forecasts/SRS.html
The characteristics for each active region (region with a sunspot group)
are compiled from approximately half a dozen observatories that report
to the SWPC in near-real time. The sunspot counts are typically higher
than those reported in non-real time by the Sunspot Index Data Center
(SIDC), Brussels, Belgium, and the American Association of Variable
Star Observers.
The last 75 Summary of Space Weather Observations reports are in this
directory.
Issue time: Daily after 0030 UTC, usually online by 0035 UTC.
Period covered: Previous UTC day.
Available:
via SWPC Anonymous FTP server swpc.noaa.gov
/pub/latest/dayobs.txt --- most recent report
/pub/forecasts/dayobs --- last 75 reports
via SWPC Web site:
http://swpc.noaa.gov/ftpdir/latest/dayobs.txt
http://swpc.noaa.gov/ftpmenu/forecasts/dayobs.html
via the NOAA Weather Wire service,
see http://swpc.noaa.gov/wwire_guide.html or wwire.html
See http://swpc.noaa.gov/Data/ for other SWPC data and products.
***************************************************************
** Please read the SWPC Disclaimer at http://www.swpc.noaa.gov/
** before using the forecasts and data in these reports.
***************************************************************
SWPC provides near-real-time and recent data, solar and geomagnetic
indices and solar event reports created from preliminary reports.
Preliminary data may contain errors or be revised after further
review. The historical products in this SWPC Warehouse are the
preliminary reports as originally published. SWPC does not encourage
the use of preliminary data for research purposes.
Links to archive sites with final data: http://www.swpc.noaa.gov/Data/
******************************************************************
Please send comments and questions to SWPC.Webmaster@noaa.gov
Report problems to SWPC.CustomerSupport@noaa.gov
====================================================
====== Sample ====================================
:Product: Summary of Space Weather Observations dayobs.txt
:Issued: 2007 Dec 03 0033 UTC
# 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
#
# Summary of Space Weather Observations
#
:Solar_Region_Summary: 2007 Dec 02
# Region Location Sunspot Characteristics
# Helio Spot Spot Mag.
# Num Lat.,CMD Long. Area Extent class count class
0976 S09E10 333 10 2 BXO 2 B
0977 S05E53 290 30 4 BXO 4 B
====================================================
====== Description ===============================
Region: The 4-digit region number assigned by SWPC to each sunspot
group during its disk passage. Note: the region number is the
last 4 digits of the official region number. When it reaches 9999
it will roll over to 0000, e.g. 9998, 9999, 0000, 0001.
Location Helio: Location, in heliographic degrees latitude and degrees
east or west from central meridian (CMD), rotated to 2400 UTC.
Long.: Carrington longitude of the center of the group.
Sunspot Characteristics:
Area: The total corrected area of the sunspots in the sunspot group
expressed in millionths of the solar hemisphere.
Extent: </b>Length of the group in degrees heliographic longitude
as measured between the most extreme edges of the two most widely
separated spots along the group's major axis.
Spot class: Modified Zurich classification of the sunspot group.
Spot count: Number of spots (umbra) visible within the sunspot group.
Mag. class: The magnetic classification of the sunspot group.