{"id":267248,"date":"2023-07-13T18:33:29","date_gmt":"2023-07-13T16:33:29","guid":{"rendered":"https:\/\/climatescience.press\/?p=267248"},"modified":"2023-07-13T18:33:32","modified_gmt":"2023-07-13T16:33:32","slug":"a-new-way-to-detect-solar-flares","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=267248","title":{"rendered":"A New Way to Detect Solar\u00a0Flares"},"content":{"rendered":"\n
\"\"
On August 31, 2012 a long filament of solar material that had been hovering in the sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The coronal mass ejection, or CME, traveled at over 900 miles per second. The CME did not travel directly toward Earth, but did connect with Earth’s magnetic environment, or magnetosphere, causing aurora to appear on the night of Monday, September 3. \r\rPicuted here is a lighten blended version of the 304 and 171 angstrom wavelengths. Cropped\n\rCredit: NASA\/GSFC\/SDO\r\rNASA image use policy.<\/a><\/b>\n\nNASA Goddard Space Flight Center<\/a><\/b> enables NASA\u2019s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA\u2019s accomplishments by contributing compelling scientific knowledge to advance the Agency\u2019s mission.\n\nFollow us on Twitter<\/a><\/b>\n\nLike us on Facebook<\/a><\/b>\n\nFind us on Instagram<\/a><\/b><\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Spaceweather.com<\/a><\/p>\n\n\n\n

By DR.TONY PHILLIPS<\/a><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

June 21, 2023:<\/strong><\/p>\n\n\n\n

Around the world, ham radio operators are experimenting with a new way to detect solar flares\u2013the Doppler Shift method<\/a>. Brian Curtis of Sault Ste Marie, Michigan, demonstrated the technique on June 20th when the sun produced a powerful X1.1-class solar flare:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u201cI monitor the frequency and field strength of Canada\u2019s CHU time station transmitting at 7850 KHz,\u201d explains Curtis. \u201cDuring the X-class flare event, I was able to detect the Doppler shift of the station\u2019s carrier frequency (green plot). It shifted by 5 Hz, which is a small change, but very obvious!\u201d<\/p>\n\n\n\n

When radiation from a solar flare hits Earth\u2019s atmosphere, it ionizes the air, temporarily boosting the thickness of our planet\u2019s ionosphere. Any radio station skipping off the ionosphere will suddenly find its frequency Doppler shifted (because its reflection point is moving). Shortwave stations such as\u00a0WWV<\/a>,\u00a0WWVH<\/a>, and\u00a0CHU<\/a>\u00a0transmit carriers with atomic-clock grade frequency stability, so they are perfect sources for Doppler monitoring.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Above:<\/strong> Sudden changes in the ionosphere caused by flares or even sunrise\/sunset can Doppler shift the frequency of stations like WWV. Image credit: Collins et al (20<\/a><\/em>21)<\/a><\/p>\n\n\n\n

\u201cI have been monitoring radio stations for decades, noting sudden changes in signal strength as a means of monitoring space weather events,\u201d says Curtis. \u201cIt is only fairly recently (~4 months) that I started to experiment with monitoring the Doppler shift of HF stations. The June 20th X-class flare event is by far the most dramatic that I have witnessed thus far.\u201d<\/p>\n\n\n\n

Would\u00a0you<\/em>\u00a0like to detect solar flares this way? <\/p>\n\n\n\n

The\u00a0HamSCI<\/a>\u00a0citizen science program has developed a\u00a0Personal Space Weather Station<\/a>\u00a0specifically for Doppler shift measurements. <\/p>\n\n\n\n

This technique can also be used to study\u00a0solar eclipses<\/a>,\u00a0earthquakes and tsunamis<\/a>, and\u00a0much more<\/a>.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\u201cI monitor the frequency and field strength of Canada\u2019s CHU time station transmitting at 7850 KHz,\u201d explains Curtis. \u201cDuring the X-class flare event, I was able to detect the Doppler shift of the station\u2019s carrier frequency (green plot). It shifted by 5 Hz, which is a small change, but very obvious!\u201d<\/p>\n","protected":false},"author":121246920,"featured_media":267257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691821052,691821051],"class_list":{"0":"post-267248","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-doppler-shift-method","9":"tag-solar-flares-2","11":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/0-Solar-Flares12.jpeg?fit=1500%2C844&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-17ws","jetpack-related-posts":[{"id":422345,"url":"https:\/\/climatescience.press\/?p=422345","url_meta":{"origin":267248,"position":0},"title":"X-CLASS SOLAR FLARE \u2013 CME headed toward Earth","author":"uwe.roland.gross","date":"21\/01\/2026","format":false,"excerpt":"A full-halo CME is heading for Earth following a long-duration X1.9-class solar flare on Jan. 18th. The CME\u2019s\u00a0arrival on Jan. 20th\u00a0could spark strong geomagnetic storms with\u00a0auroras at mid-latitudes.","rel":"","context":"In \"auroras at mid-latitudes\"","block_context":{"text":"auroras at mid-latitudes","link":"https:\/\/climatescience.press\/?tag=auroras-at-mid-latitudes"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/00Screenshot-2026-01-21-090947.png?fit=965%2C954&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/00Screenshot-2026-01-21-090947.png?fit=965%2C954&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/00Screenshot-2026-01-21-090947.png?fit=965%2C954&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/00Screenshot-2026-01-21-090947.png?fit=965%2C954&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":204517,"url":"https:\/\/climatescience.press\/?p=204517","url_meta":{"origin":267248,"position":1},"title":"Slow-motion Solar Flare and CME","author":"uwe.roland.gross","date":"15\/06\/2022","format":false,"excerpt":"June 13, 2022:\u00a0Growing sunspot AR3032 exploded on June 13th (0407 UT), producing an\u00a0M3-class\u00a0solar flare that lasted\u00a0nearly 8 hours\u00a0from beginning to end. NASA\u2019s Solar Dynamics Observatory recorded the slow-motion blast: Extreme ultraviolet radiation from the flare ionized the top of Earth\u2019s atmosphere, causing a shortwave radio blackout over Japan and southeast\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/06\/00cme_c3.gif?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":299094,"url":"https:\/\/climatescience.press\/?p=299094","url_meta":{"origin":267248,"position":2},"title":"Solar Protons Are Raining Down on\u00a0Earth","author":"uwe.roland.gross","date":"30\/01\/2024","format":false,"excerpt":"Energetic protons from the sun are striking the top of Earth\u2019s atmosphere today following a strong solar flare during the early hours of Jan. 29th. This is called a \u201cradiation storm,\u201d and it is currently a category\u00a0S2\u00a0event.","rel":"","context":"In \"Earth\u2019s atmosphere\"","block_context":{"text":"Earth\u2019s atmosphere","link":"https:\/\/climatescience.press\/?tag=earths-atmosphere"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/01\/00Screenshot-2024-01-30-162148.png?fit=1200%2C864&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/01\/00Screenshot-2024-01-30-162148.png?fit=1200%2C864&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/01\/00Screenshot-2024-01-30-162148.png?fit=1200%2C864&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/01\/00Screenshot-2024-01-30-162148.png?fit=1200%2C864&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/01\/00Screenshot-2024-01-30-162148.png?fit=1200%2C864&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":216363,"url":"https:\/\/climatescience.press\/?p=216363","url_meta":{"origin":267248,"position":3},"title":"Earth Just Dodged a lot of CMEs","author":"uwe.roland.gross","date":"30\/08\/2022","format":false,"excerpt":"It seemed like sunspot AR3088 would never stop exploding.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/08\/0almostx.gif?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/08\/0almostx.gif?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/08\/0almostx.gif?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/08\/0almostx.gif?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":254404,"url":"https:\/\/climatescience.press\/?p=254404","url_meta":{"origin":267248,"position":4},"title":"An Earth-Directed Explosion on the Sun","author":"uwe.roland.gross","date":"24\/04\/2023","format":false,"excerpt":"Earth is in the strike zone. 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