Η τρύπα του όζοντος συρρικνώθηκε το 2019, πού το αποδίδουν οι επιστήμονες

ozon
Διαβάστε επίσης

Η τρύπα του όζοντος είχε το 2019 τη μικρότερη έκτασή της από τότε που οι επιστήμονες άρχισαν την παρακολούθησή της το 1982. Η εξέλιξη αυτή οφείλεται κυρίως στις αφύσικα υψηλές θερμοκρασίες στη στρατόσφαιρα πάνω από την Ανταρκτική, σύμφωνα με την Εθνική Υπηρεσία Ωκεανών και Ατμόσφαιρας (ΝΟΑΑ) των ΗΠΑ και την Αμερικανική Διαστημική Υπηρεσία (NASA).

Η τρύπα του όζοντος έφθασε φέτος στο μέγιστο σημείο της στις 8 Σεπτεμβρίου, στα 16,4 εκατομμύρια τετραγωνικά χιλιόμετρα (το μικρότερο ετήσιο μέγιστο όλων των εποχών). Στη συνέχεια, έως τα μέσα Οκτωβρίου είχε πλέον συρρικνωθεί κάτω από 10 εκατομμύρια τετραγωνικά χιλιόμετρα, το χαμηλότερο επίπεδο στην ιστορία.

Είναι η τρίτη φορά μέσα στα τελευταία 40 χρόνια που η υψηλή θερμοκρασία του αέρα έχει οδηγήσει σε σμίκρυνση της τρύπας του όζοντος. Κάτι ανάλογο, αλλά σε μικρότερο βαθμό από ό,τι το 2019, είχε γίνει το 1988 και το 2002, όταν πάλι είχαν υπάρξει ασυνήθιστα μικρές τρύπες όζοντος.

«Είναι σημαντικό να κατανοήσουμε ότι αυτό που βλέπουμε φέτος, οφείλεται στις υψηλότερες στρατοσφαιρικές θερμοκρασίες. Δεν είναι σημάδι ότι το ατμοσφαιρικό όζον ξαφνικά μπήκε σε πορεία ταχείας ανάκαμψης», δήλωσε ο Πολ Νιούμαν, επικεφαλής γεωεπιστήμονας του Διαστημικού Κέντρου Goddard της NASA.

Οι επιστήμονες εκτιμούν ότι η τρύπα του όζοντος πάνω από την Ανταρκτική, η οποία είχε ανακαλυφθεί το 1985 από Βρετανούς επιστήμονες, θα έχει επιστρέψει στα επίπεδα του 1980 έως περίπου το 2070, καθώς αργά αλλά σταθερά συνεχίζουν να μειώνονται οι συγκεντρώσεις στην ατμόσφαιρα των χημικών ουσιών (χλωροφθορανθράκων) που είχαν απαγορευθεί από το διεθνές Πρωτόκολλο του Μόντρεαλ του 1987.

Η τρύπα του όζοντος, που δημιουργείται όταν οι ηλιακές ακτίνες αντιδρούν με ανθρωπογενείς χημικές ουσίες, με αποτέλεσμα οι χημικές αντιδράσεις να καταστρέφουν τα μόρια του όζοντος, μετρείται με δορυφόρους και μετεωρολογικά μπαλόνια στο νότιο πόλο.

Το στρώμα όζοντος της στρατόσφαιρας προστατεύει τον πλανήτη από τη δυνητικά επικίνδυνη υπεριώδη ακτινοβολία, που μπορεί να προκαλέσει καρκίνο του δέρματος και καταρράκτη στα μάτια, να καταστείλει τη δράση του ανοσοποιητικού συστήματος του σώματος, αλλά και να κάνει ζημιά στα φυτά. Πιο κοντά την επιφάνεια της Γης, το όζον δημιουργείται ως υποπροϊόν της ρύπανσης και μπορεί να πυροδοτήσει ή να επιδεινώσει διάφορες παθήσεις, όπως άσθμα, βρογχίτιδα, δύσπνοια κ.α.

Πηγή: ΑΜΠΕ

Παλαιότερα άρθρα:

23 απαντήσεις στο “Η τρύπα του όζοντος συρρικνώθηκε το 2019, πού το αποδίδουν οι επιστήμονες”

  1. This is the appropriate blog for anyone who needs to search out out about this topic. You understand so much its nearly onerous to argue with you (not that I actually would want匟aHa). You definitely put a new spin on a topic thats been written about for years. Nice stuff, just nice!

  2. Youre so cool! I dont suppose Ive learn anything like this before. So good to find any person with some authentic thoughts on this subject. realy thanks for starting this up. this web site is something that is needed on the web, somebody with just a little originality. useful job for bringing one thing new to the internet!

  3. The following time I read a weblog, I hope that it doesnt disappoint me as a lot as this one. I mean, I know it was my option to read, however I truly thought youd have one thing attention-grabbing to say. All I hear is a bunch of whining about something that you would fix when you werent too busy on the lookout for attention.

  4. I simply desired to appreciate you all over again. I do not know what I would have created in the absence of the actual basics contributed by you directly on my subject. It previously was an absolute scary concern in my view, nevertheless finding out the specialized avenue you solved it forced me to cry over delight. Now i’m happier for the work and thus believe you comprehend what an amazing job you were providing training many others using a web site. I know that you’ve never got to know any of us.

  5. A lot of thanks for each of your efforts on this web site. My aunt really likes making time for investigation and it is simple to grasp why. Most of us hear all relating to the lively medium you convey important ideas through the blog and boost participation from the others about this concept while our own simple princess is without question starting to learn so much. Have fun with the rest of the year. You are carrying out a superb job.

  6. Thanks so much for providing individuals with a very spectacular opportunity to read articles and blog posts from this blog. It’s usually very ideal and also stuffed with a good time for me and my office peers to visit the blog at the very least 3 times in 7 days to learn the new guides you have got. Not to mention, I’m also usually pleased concerning the exceptional secrets served by you. Selected 3 points in this article are in fact the most effective I have had.

  7. I precisely desired to say thanks once again. I do not know what I would’ve carried out in the absence of the type of advice contributed by you concerning that topic. Certainly was a real frightening setting in my position, nevertheless seeing the specialized approach you dealt with that made me to jump for gladness. I’m just thankful for your advice and then believe you realize what an amazing job your are undertaking instructing many others through the use of your blog. I know that you have never come across any of us.

  8. Thank you so much for giving everyone an extremely remarkable chance to read critical reviews from this website. It really is so amazing and also stuffed with fun for me and my office friends to search your site nearly three times in 7 days to see the latest items you have. Of course, we’re always contented with the special ideas you give. Some 4 facts on this page are easily the most suitable I have ever had.

  9. I want to convey my respect for your kindness in support of those individuals that really want guidance on this particular area of interest. Your very own commitment to getting the solution all through became definitely interesting and have really enabled guys and women like me to get to their ambitions. Your own useful useful information denotes much a person like me and a whole lot more to my peers. With thanks; from each one of us.

  10. I precisely wanted to say thanks once more. I’m not certain what I might have gone through without the actual concepts shown by you over such a concern. It became an absolute depressing dilemma in my opinion, however , spending time with a expert tactic you dealt with that forced me to jump over gladness. I’m just happier for this support and as well , expect you are aware of an amazing job that you’re accomplishing teaching others via your web blog. Most probably you’ve never met any of us.

  11. I enjoy you because of all your work on this web site. Debby really loves doing research and it’s really simple to grasp why. Most of us notice all concerning the lively manner you render both useful and interesting suggestions through this web blog and even boost contribution from others on this concern while our simple princess is always becoming educated a great deal. Enjoy the rest of the new year. You’re the one doing a fabulous job.

  12. My wife and i got so more than happy that Louis managed to do his inquiry by way of the ideas he came across in your site. It’s not at all simplistic to simply continually be freely giving tips and tricks which usually other folks could have been trying to sell. And now we fully understand we now have the writer to thank because of that. Most of the illustrations you made, the simple blog menu, the relationships you will aid to foster – it’s everything superb, and it’s making our son in addition to the family know that this idea is exciting, which is tremendously essential. Thanks for the whole lot!

  13. I intended to post you one very small word to help say thanks again for those remarkable tactics you have documented on this website. It’s quite remarkably open-handed of you to deliver openly just what a few individuals could possibly have supplied for an electronic book to earn some cash for their own end, chiefly given that you could possibly have done it in case you decided. The suggestions in addition acted to be the great way to be sure that some people have the same keenness much like mine to grasp significantly more in terms of this matter. I’m sure there are some more fun opportunities up front for those who look over your blog post.

  14. I truly wanted to jot down a remark to say thanks to you for those awesome guidelines you are placing at this website. My prolonged internet research has finally been recognized with high-quality insight to share with my family. I ‘d suppose that many of us visitors are unequivocally blessed to live in a wonderful community with very many outstanding professionals with good plans. I feel very much happy to have encountered the web page and look forward to many more exciting minutes reading here. Thanks a lot again for all the details.

  15. My husband and i felt quite thrilled that Ervin could finish up his analysis through your ideas he came across from your weblog. It is now and again perplexing to simply continually be making a gift of thoughts which often some others may have been making money from. And now we see we need the writer to give thanks to for this. Most of the explanations you made, the easy blog menu, the friendships you help to foster – it’s got all superb, and it’s really aiding our son and our family do think that idea is thrilling, which is certainly especially vital. Many thanks for the whole thing!

  16. I wanted to draft you one little bit of remark to be able to thank you yet again for your personal fantastic advice you have documented above. It was so strangely generous of people like you to grant unhampered all a few individuals would’ve distributed for an ebook to get some profit on their own, and in particular since you might well have tried it in the event you considered necessary. Those good ideas in addition worked as the good way to fully grasp other people have a similar interest like mine to figure out good deal more regarding this condition. Certainly there are lots of more pleasurable moments ahead for individuals who look over your blog post.

  17. I not to mention my guys were digesting the best information and facts from your web page and then instantly came up with an awful feeling I had not thanked the blog owner for those techniques. The ladies happened to be for that reason excited to see them and have now in fact been taking pleasure in these things. Thank you for truly being well considerate and also for deciding on varieties of essential issues most people are really wanting to understand about. My honest apologies for not expressing appreciation to you earlier.

  18. 327229 934618Official NFL jerseys, NHL jerseys, Pro and replica jerseys customized with Any Name / Number in Pro-Stitched Tackle Twill. All NHL teams, full range of styles and apparel. Signed NFL NHL player jerseys and custom team hockey and football uniforms 751288

Σχολιάστε