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1. www.ngdc.noaa.gov › geomag-webNCEI Geomagnetic Calculators - National Oceanic and Atmospheric...

   www.ngdc.noaa.gov › geomag-web

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   Declination results are typically accurate to 30 minutes of arc, but environmental factors can cause magnetic field disturbances. The calculator provides an easy way for you to get results in HTML, XML, CSV, or JSON programmatically (API). Registration is required to access this service.

   • FAQ

     Our calculators provide an easy way for you to get results...

   • Geomagnetism

     Geomagnetism is one of the oldest geophysical sciences....

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     News. There’s a lot going on at NCEI. Our News & Features...

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     Site Map of the NOAA National Geophysical Data Center (NGDC)...

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     NCEI data is a unique, authoritative resource for advancing...

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     Climate and Past Weather *For up-to-date forecasts and...

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     NOAA's National Centers for Environmental Information (NCEI)...

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     Geomagnetic Field Calculators - API Registration The details...

2. www.omnicalculator.com › physics › magnetic-declinationMagnetic Declination Calculator

   www.omnicalculator.com › physics › magnetic-declination

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   26 maj 2024 · Our calculator will help you find the magnetic declination for your specific location and date. A positive declination (+D) means that your compass will point east of north. A negative declination (-D) means that your compass will point west of north.

3. www.earthsurvey.us › magdecMagnetic Declination Calculator (MagDec) - Earth Survey

   www.earthsurvey.us › magdec

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   MagDec is a graphical front end for the NCEI online Magnetic Field Calculators that eliminates the need to input geodetic coordinates and displays the calculated magnetic declination and secular variation in a placemark balloon. Position the point of interest (POI) in the center of the view.

4. geomag.bgs.ac.uk › data_service › models_compassWorld Magnetic Model 2020 Calculator - British Geological Survey

   geomag.bgs.ac.uk › data_service › models_compass

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   2 lip 2022 · World Magnetic Model 2020 Calculator. Use the tool below to compute values for the geomagnetic field and secular variation for a given set of coordinates and date. This calculator uses the World Magnetic Model as released in Dec 2019.

5. www.ngdc.noaa.gov › geomag › declinationMagnetic Declination (Variation) | NCEI - National Oceanic and...

   www.ngdc.noaa.gov › geomag › declination

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   Magnetic declination (variation) calculator based on the IGRF magnetic field model. Estimates magnetic delination world-wide from 1900 - present.

6. www.ngdc.noaa.gov › geomag › magfieldEarth's Magnetic Field Calculators - Instructions | NCEI

   www.ngdc.noaa.gov › geomag › magfield

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   On-line calculators to estimate current and past values of the magnetic field. If you want only the magnetic declination (variation) for a single day between 1900-present, visit our declination calculator.

7. dataservices.gfz-potsdam.de › mesi › overviewDeclination Calculator for the International Geomagnetic...

   dataservices.gfz-potsdam.de › mesi › overview

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   The declination calculator provides declination values for any location on Earth and any given year between 1900 and 2020. Strongly magnetized rocks in the Earth's crust at some locations cause local anomalies in declination, which can lead to differences between the actual deviation of a compass needle and the calculated values.