Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Fwd: [World Magnetic Model] WMM2015 degraded performance warning -- March 2018
    From: Andrés Ruiz
    Date: 2018 Mar 22, 19:11 +0100
    FYI



    ---------- Forwarded message ----------
    From: World Magnetic Model <geomagnetism@list.woc.noaa.gov>
    Date: 2018-03-22 16:05 GMT+01:00
    Subject: [World Magnetic Model] WMM2015 degraded performance warning -- March 2018
    To: geomagnetism <geomagnetism@list.woc.noaa.gov>


    Dear World Magnetic Model users,


    This is a message from NOAA's National Centers for Environmental Information (formerly National Geophysical Data Center).


    We would like to bring to your attention that WMM Gridded Variation (GV) error has recently exceeded the WMM performance specification in the Arctic region. Other geographic areas and other model parameters are not affected. This performance degradation is caused by fast-changing core flows in the North polar region of the Earth’s outer core.  We invite your feedback on potential impacts and whether an out-of-cycle WMM update would benefit your operations.


    More details in the attached white paper. Additional information is available from WMM website. Questions and comments may be addressed to geomag.models@noaa.gov


    You received this email because you opted for notifications related to NOAA Geomagnetic models or services. To go to https://list.woc.noaa.gov/cgi-bin/mailman/listinfo/geomagnetism and select “ or edit option”.




    _______________________________________________
    Geomagnetism mailing list
    Geomagnetism@list.woc.noaa.gov
    https://list.woc.noaa.gov/cgi-bin/mailman/listinfo/geomagnetism




    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/

    File: 141684.wmm2015_performance_white_paper_short.pdf
       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site