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Marcel de Bont

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Marcel de Bont last won the day on February 22

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About Marcel de Bont

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    SpaceWeatherLive Manager
  • Birthday 07/15/1989

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    www.spaceweatherlive.com

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    Norrbotten, Sweden
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    Aurora, photography

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  1. Indeed. As soon as the NOAA SWPC issues a geomagnetic storm ALERT we process it and send it out our own alerts on Twitter and the app as soon as our system has handled the request. Watches and warnings are not something we process but can still be consulted here: https://www.spaceweatherlive.com/en/reports/noaa-swpc-alerts-watches-and-warnings Alerts for solar flares, proton storms, CME impacts, coronal holes and radio blackouts are handled in a different way and are based on algorithms we developed ourselves. Thank you for the comprehensive post Christopher. No I do not think they issue any sort of report where they compare what they had in their forecast and what actually occurred.
  2. The primary images you are referring to are from GOES-16. We have the GOES-16 images (primary) already on the website, have had them since we made the GOES page. In fact, these GOES-16 images are used everywhere where GOES images are featured. The GOES-17 images are only used on the GOES page. GOES-17 is not officially operational yet so its no wonder these aren't updated but we still wanted to feature them on the GOES page in case they get updated again in the future. https://www.spaceweatherlive.com/en/solar-activity/solar-images/goes
  3. We will replace it with the Hobart magnetometer. If anybody has a better suggestion for a southern hemisphere magnetometer please feel free to post in this thread and we will investigate the suggestion. Thanks.
  4. You are right this needs to be addressed. We added it to our to-do list. Thanks.
  5. Hello goldminor. Thanks for your comment. Of course we have our opinion on alternative space weather science but this forum is open for everyone and their ideas even if we don't always agree with them. That is what message boards are all about. Sparking discussions and coming up with new ideas or information. We live in a free world and this forum is open to everyone as long as everybody sticks to our house rules. As said, we have seen the past few months that many people who find the SpaceWeatherLive forums are in facts people who are interested and want to discuss alternative scientific topics and if people want to use this forum to discuss their ideas than that is no problem. We just want to emphasize that promoting alternative space weather science is not one of the goals of this website. But that doesn't mean we are going to forbid these topics. Everyone is welcome here as long as the atmosphere on these message boards remain civil and polite.
  6. Hello all, We have decided to remove the ''Question forum'' and open a new forum in the Space Weather category. It is called ''Other'' and you are visiting this forum right now. Most of the topics posted in the old Question forum resulted in discussions and due to the way this old Question forums worked, all the posts were scrambled as they were ordered by the numbers of up votes each post received. This made it very confusing to follow the discussions. We welcome in this new ''Other'' forum any topic that fits within the general space weather theme but doesn't fit in the Solar Activity or Geomagnetic Activity forums. Questions can now be posted in any forum that fits your topic. We also want to address something else and that's topics about alternative science. SpaceWeatherLive is a serious website with two core goals: We aim to educate the general public about main stream space weather science and bring the latest space weather news and data all on one easy to navigate website. We do not get involved in topics about what we like to call alternative space weather science as this is not a topic that we cover on our website. We mean with alternative science, topics about coronal holes causing earthquakes and that kind of stuff. However we do think that everyone is free to believe what they want and we do not want to kill such discussions as soon as they pop up. There is obviously a significant audience that wish to discuss such topics and as long as the discussions remain civil and constructive we see no reason to ban such topics. However we do invite you to keep such topics in this forum and this forum only. We hope you understand our reasoning. One more thing... Yes... I couldn't think of a better name than ''Other'' for this forum so... if you got a better idea for a name feel free to reply. With kind regards, Marcel de Bont
  7. You are very much correct. Also keep in mind that due to the curvature of our planet, if you look from very far away (thus the aurora is low on the horizon for the observer) you will more likely see the top of the aurora: the red colours. These are also harder to spot for the naked eye than greens but with a DSLR you will more easily see the aurora. When the aurora comes closer and closer to the observers position you will start to see the greens. You are right that the gaseous composition determines the colors of the aurora but Earth's weather is not a factor at such high altitudes. We are talking about the edge of space and space itself. What angle you are watching the aurora from should not cause it to shift in color from one observer to the other.
  8. I dont think so. The colour just depends on at what altitude the aurora is occurring. I am not 100% sure about the exact altitudes but I think its below 85 kilometers for purple. Between like 85 kilometers and 200 kilometers for green and above that red. A quick Google search should give you exact numbers I might be wrong about the exact altitudes. If the aurora is extremely bright some of the greens can become almost white from my experience but this lasts at most seconds. I haven't seen blue aurora but heard reports about it. The aurora can absolutely be more intense from one place to another. Local stronger geomagnetic disturbances are not uncommon. Also keep in mind the auroral oval is at its thickest and this stretches to lower latitudes near magnetic midnight.
  9. I am very sorry but the delete (and hide) function was used in the way it is not intended. We do not want perfectly good content to disappear as soon as a question was answered for example. Lot's of people find the forums and website trough Google or any other search engine. People can Google something and find an answer in a topic on this forum. I am sure that many new users who have been posting in your topics also found your topics trough Google. I am sorry it is inconvenient for you, that sucks to hear but I cant do anything about it. I even looked if there was a setting that allowed members to hide a topic at a maximum of xxx minutes after creating the topic but there is no such option. There is only an option to restrict members from editing a post until a maximum of xxx minutes after posting. If such a setting becomes available trough forum software updates I will install such a limit as that should accommodate your wish but at the moment there is no such function. Hope you understand our reasoning.
  10. Also, NOAA does not feature CMEs on their model that they do not expect to impact Earth. NASA does. Have to agree with NOAA here. This CME is aimed away from Earth.
  11. That is a good description. When looking at LASCO you will be looking mostly for full halo coronal mass ejection (CMEs that engulf the entire coronagraph). These are either moving directly towards us or away from us. Correlate with SDO and SOHO to see if the eruption was front or back sided. Partial halo coronal mass ejections (CMEs that do not cover the entire LASCO field of view) can still hit us as glancing blows but these are a little harder to accurately predict their path. But combining all the tools like SOHO and STEREO as well as SDO gets you very far. Do dig around in our help section for more info https://www.spaceweatherlive.com/en/help/how-do-we-know-if-a-cme-is-earth-directed-and-when-its-going-to-arrive
  12. If I understood NOAA's document correctly they are only wrong at very very low solar activity. The old sensors just weren't sensitive enough for such quiet conditions. You will see more more variability during quiet solar periods. They also removed a correction factor which has been in place for a very long time. Open the hyperlink from my first post. You can read all about it in the document from the NOAA SWPC.
  13. You are very much correct. They switched to GOES 16 for the GOES primary today. The very low X-ray reading is correct. The GOES-16 X-ray sensor is much more sensitive especially during very low solar activity. It is all explained in the following document. https://www.swpc.noaa.gov/sites/default/files/images/GOES 16 XRS Updates and Status.pdf
  14. Hello and welcome! Not sure what snow has to do with it but you are right, we were at Kp0 for quite a while yesterday and the day before... but it is not in our interest anyway to send out alerts for such occurrences. It is solar minimum and periods with low solar or auroral activity are common at the moment. It is even worse for our Sun: there can be weeks without solar flares or sunspots around solar minimum!
  15. Hello and welcome. Most of the comets that approach the Sun burn up long before they can impact the Sun but it does happen that very large comets survive long enough before they hit the Sun. We can sometimes see comets on coronagraph satellite imagery as they approach the Sun. This YouTube video gives you a great example. I can't really answer your second question but comets do not trigger solar flares or CMEs. Imagine throwing a pebble in the Atlantic ocean. That is comparable to what a comet impact looks like on the Sun.
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