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1. 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.

   • Grid Magnetic Angle Calculator

     Enter ONE ONLY of the following sets of coordinates: British...

   • IGRF Model

     This calculator uses the International Geomagnetic Reference...

   • Models & Compass Variations

     Grid Magnetic Angle Calculator. ... Planet Earth -...

   • Solar & Geomagnetic Forecasts

     The DRX index (Daily Range in the X component), in units of...

2. 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.

3. spaceweather.gfz-potsdam.de › DECLINATIONCALC › declinationcalc_enGFZ Potsdam - IGRF declination calculator

   spaceweather.gfz-potsdam.de › DECLINATIONCALC › declinationcalc_en

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   GFZ Potsdam - IGRF declination calculator. City: (optional) Alternatively, input your own global coordinates. Date: (1900 - 2025) Altitude (optional): m. (-1000 - 600000)

4. www.ncei.noaa.gov › products › world-magnetic-modelWorld Magnetic Model (WMM) | National Centers for Environmental...

   www.ncei.noaa.gov › products › world-magnetic-model

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   This web calculator will give declination for a single point. If HTML output is selected it includes a Google map with sample compass. Select the WMM2020 radio button to get results from the World Magnetic Model.

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.geomag.org › models › instructions-igrfplus-declinationInstructions for IGRF+ Declination Calculator - Geomag

   www.geomag.org › models › instructions-igrfplus-declination

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   12 lut 2013 · Instructions for the IGRF+ Declination Calculator. Values are computed using the current International Geomagnetic Reference Field as adopted by the International Association of Geomagnetism and Aeronomy. Values are estimates based on the IGRF11 and are generally accurate to within 30 minutes of arc for D and I and 100-250 nT for the force ...

7. 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.