El Nino & La Nina - Explained

[@pallabdas2301]

Being a meteorologist of IMD,I think your teaching material is praiseworthy, thanks.

[@DrishtiIASEnglish]

Glad you think so!

[@Factsguru-ju2lx]

Geography sir is best teacher ❤

[@flyingarsee5880]

3 minutes into the video and I feel assured that I have come to the right place for a quick recap. Thanks a lot Drishti and my respects to the educator. :)

[@samedu5163]

First time I got this concept cleared so well... Thank you so much Sir 💕😊 you are amazing teacher 🙏🌹😍🌹🙏

[@neharai34]

No words for such an awesome explanation. Thank u sir

[@nancyyadav3768]

Brilliant teacher. Brilliant technology used.

[@ashishdubey3787]

Best teacher of geography

[@chinmaysingh7064]

That’s what we call ideal explanation.

[@knowledge1153]

impressive!!!! liked the way everything was linked in such a simplistic way and covered comprehensively. make more such explained video.

[@anjalimishra9610]

Thank u drishti ias . Please make more videos on geography upsc topics.

[@Basharat2020]

Clear and Well Explained. Super Teacher!

[@adpalmistry4959]

Best ever explation by sir 🙏

[@aryaprakash2536]

Excellent explained sir ... 🙏

[@pruthiviraj6907]

Thank you Sir for clearing my doubt. Kindly make new videos for this series..

[@gauravsinghtomar7201]

Thanku so much sirji...beautifully explained

[@reemaranipanda2427]

What an explaination!...thank you so much sir..🙏🙏🙏

[@DrishtiIASEnglish]

Glad you liked it!

[@ZhawaDol]

Well explained...thank you sir 🙏

[@sankhayanbhaumik6452]

Thank you sir for a comprehensive analysis.......

[@simonambat]

Excellent presentation, absolute clarity ..

[@omprakashdnr2621]

Thank you sir please do more videos

[@praloykumarghosh6096]

Another beautiful explanation. A complex and wide phenomena is very well explained in a step by step and simplistic approach. Highly recommended to watch. Best wishes

[@amriteshpandey1177]

He is the best teacher for geography. He explains every topic is a very simple manner like you cut the butter by knife. If you attend one class then the topic will remain in your mind forever.

[@sonalisingh9617]

Thank you sir for the explanation of this intersting and important topic🙏🙏🙏🙂

[@rinkiverma5579]

Excellent lecture sir

[@dr.shikshayadav7982]

Thank you for precise explanation of topic...

[@abhishekkumarsingh9855]

Nicely explained the interlinking with other climate aspects 🙏

[@pramodmd2581]

Please continue the explained series sir🙏🙏🙏

[@vikassrivastav9942]

Sir, please make more n more explained series. It is really helpful. Thank you.

[@tilahunwubu7956]

Thank you so much Sir for Comprehensive explanation

[@nareshchoudhary2164]

Thank you sir ...thank u team drishti for providing such opportunity to understand these topics. .would u please upload every week one lecture on similar topics ..

[@tanishqsharma9270]

Well explained... Thankyou for making our concept sir😍

[@youaretopper1518]

Sir Atleast One lecture a week plz....👌

[@manojbendi9401]

Excellent stuff!! Kudos👏🎉

[@Lx_rajpurohit]

Superbb sir👌

[@amarjeetchaudhary5271]

Good explanation sir ji concept clear 👍 Thankyou so much Drishti IAS team. Jai Hind 🇮🇳..

[@chinmayamalik5849]

ok your concept is clear now tell me why the trade wind weaken and intensifies?

[@amarjeetchaudhary5271]

@@chinmayamalik5849 Interannual to decadal variability in the Pacific Ocean is a prominent feature of Earth’s climate system, with global teleconnections. Recent studies have identified Pacific decadal variability as a major driver of periods of rapid and slower global mean surface air temperature change. Here, we use an eddy-permitting global ocean model to investigate the role of the observed 1992-2011 trade wind intensification and concurrent trends in surface atmospheric variables over the Pacific associated with the negative phase of the Interdecadal Pacific Oscillation (IPO) in driving ocean circulation and heat content changes. We find a strengthening of the Equatorial Undercurrent (EUC) in response to strengthened winds, which brings cooler water to the surface of the eastern Pacific and an increase in the Pacific shallow overturning cells (PSOC), which in turn drives additional heat into the subsurface western Pacific. The wind acceleration also results in an increase in the strength and subsequent heat transport of the Indonesian throughflow (ITF), which transports some of the additional heat from the western Pacific into the Indian Ocean. The circulation changes result in warming of the subsurface western Pacific, cooling of the upper eastern Pacific Ocean and warming of the subsurface Indian Ocean, with an overall increase in Indo-Pacific heat content. Further experiments impose a symmetric reversal of the atmospheric state to examine how the ocean would behave if the winds (and other atmospheric variables) were to revert to their initial state. This mimics a return to the neutral phase of the IPO, characterised by a weakening of the Pacific trade winds. In response we find a slowdown of the EUC and the PSOC, which results in a return to climatological SST conditions in the western and eastern Pacific. The ITF also slows towards its original strength. However, the subsurface temperature, heat content and ITF responses are not symmetric due to an overall increase in the surface heat flux into the ocean associated with the cooler surface of the Pacific. There may also be irreversible heat transport across the thermocline via diapycnal mixing, further contributing to this asymmetry. The net result of the experiment is that the Indo-Pacific subsurface ocean is warmer than it was in its initial state.

[@chinmayamalik5849]

@@amarjeetchaudhary5271 Maher, N., England, M. H., Gupta, A. S., & Spence, P. (2018). Role of Pacific trade winds in driving ocean temperatures during the recent slowdown and projections under a wind trend reversal. , (1-2), 321-336. doi.org/10.1007/s00382-017-3923-3

[@chinmayamalik5849]

Thank you by the way.

[@aditimishra1951]

Thank you so much sir.

[@funnyworldzdotcom]

Sir u r genius🙏

[@gautamgunjan8471]

So good. Thankyou sir.

[@nirajjain6933]

thanks a lot sir

[@mobileaccessories4076]

Nicely explained 👌🏼👌🏼

[@kencivilservices8462]

Elaborate information and wonderful explanation

[@DrishtiIASEnglish]

Glad you liked it

[@GauravPandey123]

very well explained... but pls try to provide the timestamps also.. so that people may know which section to refer and which to not.

[@DrishtiIASEnglish]

Thanks for your suggestions Dear we will forward it to our concern team members.

[@deepakshukla8175]

Nicely explained sir!

[@jayaramv1882]

Good explanation sir

[@mahadevgore4245]

Brilliantly explained 👍

[@lunfriskyhaokip8677]

Excellent 👍👌

[@manojkunwar4451]

Much needed topic ....thanks team drishti. And plzz inform us when the new online/offline batch is going to start?

[@pruthiviraj6907]

Sir,can you made a video on sea floor spreading..

[@amriteshpandey1177]

Very well explained. Dear Saurabh! Please expain whether economic effect of both these scenarios is more in India or Peru is affected the most

[@ankitachatterjee201]

Thank you.

[@rishuyadav2732]

Tquu sir lecture amezing........ Clear in any part of elnino &lanino...

[@DrishtiIASEnglish]

Keep watching

[@swapnilshrivastava6]

Superb sir!

[@ip1367]

wow thanks

[@yash8559]

When wil you launch app for iOS users sir?

[@akshaypandey6654]

Sir Temperature and pressure are directly related.....u have mentioned and inverse relationship...???

[@gangam.s604]

Thank you so much sir😍🙏

[@sankhayanbhaumik6452]

Good Evening Sir.....

[@Known616]

Plez take one explained session on Indian rivers similar to the explained session on passes in Himalayan region

[@DrishtiIASEnglish]

Thanks for your suggestions

[@Sam_O23]

Good

[@vrushalirane342]

Ultimate explanation 💯

[@kshitijsrivastava2834]

Thanks

[@That_Middlechild]

Thanku sir🙏

[@chinmayamalik5849]

what are the some of the other reeason for intensifying and depletion of trade winds? Please you all know the common question a student will ask. Please explain.

[@splashnailart3254]

Thank you for explaining so clearly sir. I've understood the topic quite well sir.

[@DrishtiIASEnglish]

Glad to hear that

[@Sam_O23]

Wow

[@adpalmistry4959]

🙏 great sir

[@sourabhpranborah5447]

Please include "i" button for the recommended video such as indian ocean dipole etc.

[@kavyakadeli2466]

Superb 👍

[@akshaypandey6654]

Sir what are the exact reasons for strengthening and weakening of trade wind......are there any anthropogenic reasons?? Are these el-nino and la nina....completely natural events or some human disturbance in environment adding it

[@harshit3941]

Not discovered yet ... research is still going on

[@naveenprakash99]

Very thank you so much sir 👏

[@assytshangala8366]

it was helpful!!!

[@harshit3941]

I came here only after sir asked us to watch his video on el nino for further elaboration

[@kashishrangari5401]

Ty sir🙏

[@mahithems6160]

Plz make a video on a topic of jet stream.

[@DrishtiIASEnglish]

Thanks for your suggestion we will forward it to concerned team members

[@gauravkumarsingh9250]

Sir please explain... Maidain julian oscillation

[@LokeshShukla07]

Sir, you told that the relationship between pressure and temperature is inverse but UNIVERSAL GAS EQUATION states direct relationship between them(PV=nRT). pleaase clarify my confusion 🙏🏼

[@LokeshShukla07]

@Saurabh Singh Tomar Sir, please upload INDIAN MONSOON in your explained series 🙏🏼

[@WWESting]

the formula you mentioned, R is a gas constant which has a reciprocated value, right? R=8.31JK ^ -1 so to make the power of -1 to +1 , we gave to reciprocate T, hence PV=nR/T

[@shyamdev3992]

Those equations are for close system but here we study in open system and in open system pressure is showing inversely proportional to temperature.

[@BraneAcademy]

This equation (PV=nRT) is valid only for closed or isolated system.

[@ARVINDKUMAR-pq7ov]

Hlo bhai log

[@SanaKhan-lx9et]

El nino occurs because of weakening of the trade winds...bt y do these trade winds weaken ?? Can anyone explain me clearly

[@balwant89702]

For some unknown reason.... Their isn't enough research till now..

[@divyekumar6553]

Rohit wazir sir is far better.....

[@mralamtech1724]

👍🏿

[@pranayahamlal1311]

Hhhhh

[@pramodmd2581]

Thank you sooo much sir 🙏🙏🙏

[@sudheersir6717]

Nice

[@DrishtiIASEnglish]

Thanks