A map shows ‘sea surface temperature anomaly’ during a strong La Nina in December 1988.

Photo Credit: NOAA Climate.gov, based on data provided by NOAA View

La Nina may change weather patterns worldwide

Share

An official “La Nina watch” has been issued by the National Oceanic and Atmospheric Administration of the U.S. and it could bring more extreme weather starting in July or August.

El Nino brought disastrous weather events around the world and signs are it is petering out.  “El Nino is a warmer than normal tropical Pacific Ocean and when that happens we have a sort of shift in the jet stream and the wind patterns as the atmosphere responds to that warmer water,” says Eric Holthaus, a meteorologist who writes for Slate.com. “That has shifted weather patterns worldwide.”

Listen
On Jan 26, 2016, a young Ethiopian boy walks through crops ravaged by drought. El Nino has brought drought to many regions causing food shortages and humanitarian crises.
On Jan 26, 2016, a young Ethiopian boy walks through crops ravaged by drought. El Nino has brought drought to many regions causing food shortages and humanitarian crises. © Mulugeta Ayene/AP Photo/file

100 million affected by El Nino

Some 100 million people, mostly in Africa, Southeast Asia, Latin America are going through food security and water shortages because of drought linked to El Nino, he notes. That, he expects, will persist for months after El Nino officially fades away.

La Nina could set up ‘a bad situation’

But now it looks like the ocean currents will overcorrect, as often happens after El Nino, ushering in La Nina. “Often what happens is we get flooding in those same drought-stricken regions, especially in the tropics,” says Holthaus. “We have humanitarian stretched thin throughout all of these weather disaster regions around the world right now.

“So if there are flooding events which end up being more short term and less predictable at the local level, then it really could set up for bad situation over the next few months to a year.” La Nina, he says could bring flooding to Southeast Asia, a stronger monsoon in India, drought in Peru and Argentina and fewer typhoons in East Asia.

Canada could get a colder, snowier winter

It could bring more rain to western Canada, some parts of which have faced dry conditions this past year. This would be welcome, as long as it’s not too much rain. Catastrophic floods swept parts of the province of western province of Alberta in June 2013. La Nina could also bring colder temperatures and more snow to Canada in the winter period between November and April, says Holthaus.

It’s not clear whether El Nino or La Nina are more extreme because of climate change, but what is clear is that taken together, they are causing some unpredictable and extreme weather, and will likely continue to do so.

Share
Categories: International, Internet, Science and Technology, Society
Tags: , , ,

Do you want to report an error or a typo? Click here!

@*@ Comments

Leave a Reply to David Cancel reply

Note: By submitting your comments, you acknowledge that Radio Canada International has the right to reproduce, broadcast and publicize those comments or any part thereof in any manner whatsoever. Radio Canada International does not endorse any of the views posted. Your comments will be pre-moderated and published if they meet Netiquette guidelines.

Netiquette
When you express your personal opinion in an online forum, you must be as courteous as if you were speaking with someone face-to-face. Insults and personal attacks will not be tolerated. To disagree with an opinion, an idea or an event is one thing, but to show disrespect for other people is quite another. Great minds don’t always think alike—and that’s precisely what makes online dialogue so interesting and valuable.

Netiquette is the set of rules of conduct governing how you should behave when communicating via the Internet. Before you post a message to a blog or forum, it’s important to read and understand these rules. Otherwise, you may be banned from posting.

  1. RCInet.ca’s online forums are not anonymous. Users must register, and give their full name and place of residence, which are displayed alongside each of their comments. RCInet.ca reserves the right not to publish comments if there is any doubt as to the identity of their author.
  2. Assuming the identity of another person with intent to mislead or cause harm is a serious infraction that may result in the offender being banned.
  3. RCInet.ca’s online forums are open to everyone, without regard to age, ethnic origin, religion, gender or sexual orientation.
  4. Comments that are defamatory, hateful, racist, xenophobic, sexist, or that disparage an ethnic origin, religious affiliation or age group will not be published.
  5. In online speak, writing in ALL CAPS is considered yelling, and may be interpreted as aggressive behaviour, which is unpleasant for the people reading. Any message containing one or more words in all caps (except for initialisms and acronyms) will be rejected, as will any message containing one or more words in bold, italic or underlined characters.
  6. Use of vulgar, obscene or objectionable language is prohibited. Forums are public places and your comments could offend some users. People who use inappropriate language will be banned.
  7. Mutual respect is essential among users. Insulting, threatening or harassing another user is prohibited. You can express your disagreement with an idea without attacking anyone.
  8. Exchanging arguments and opposing views is a key component of healthy debate, but it should not turn into a dialogue or private discussion between two users who address each other without regard for the other participants. Messages of this type will not be posted.
  9. Radio Canada International publishes contents in five languages. The language used in the forums has to be the same as the contents we publish or in one of the two official languages, English or French. The usage of other languages, with the exception of some words, is forbidden. Messages that are off-topic will not be published.
  10. Making repetitive posts disrupts the flow of discussions and will not be tolerated.
  11. Adding images or any other type of file to comments is forbidden. Including hyperlinks to other websites is allowed, as long as they comply with netiquette. Radio Canada International  is in no way responsible for the content of such sites, however.
  12. Copying and pasting text written by someone else, even if you credit the author, is unacceptable if that text makes up the majority of your comment.
  13. Posting any type of advertising or call to action, in any form, to Radio Canada International  forums is prohibited.
  14. All comments and other types of content are moderated before publication. Radio Canada International  reserves the right to refuse any comment for publication.
  15. Radio Canada International  reserves the right to close a forum at any time, without notice.
  16. Radio Canada International  reserves the right to amend this code of conduct (netiquette) at any time, without notice.
  17. By participating in its online forums, you allow Radio Canada International to publish your comments on the web for an indefinite time. This also implies that these messages will be indexed by Internet search engines.
  18. Radio Canada International has no obligation to remove your messages from the web if one day you request it. We invite you to carefully consider your comments and the consequences of their posting.

Your email address will not be published. Required fields are marked *

*

2 comments on “La Nina may change weather patterns worldwide
  1. Avatar Nickolas says:

    I’d say, El Nino is even worser than la nina pattern. El Nino resulted in huge drought in my state last time.

  2. Avatar David says:

    This year there are so many floods and storms.. The wsather is changing much dramatically. These El Nino and LA Nina weather patterns always confuse me. Having a weather radio makes me feel safe