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El Nino - warmer water on South Americas west coast?

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Toby
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El Nino - warmer water on South Americas west coast?

Postby Toby » Wed May 15, 2019 10:05 pm

one question:

I saw graphics of the El Nino effect...looks like water heats up a lot...do you really feel a big difference in water temps in Peru and/or Ecuador?

elnino.png
elnino.png (286.02 KiB) Viewed 460 times

https://images.app.goo.gl/pE9EUyRFbjf2Kb3WA

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Re: El Nino - warmer water on South Americas west coast?

Postby elguapo » Wed May 15, 2019 10:26 pm

correct me if i'm wrong but doesnt el niño= much warmer temperatures in el caribe=more thermal winds in places like
buen hombre and cabarete? (and also much more violent weather in general in the hurricane zone

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Re: El Nino - warmer water on South Americas west coast?

Postby Toby » Wed May 15, 2019 11:09 pm

More catastrophic events world wide.
Hurricanes, tornados, dry weather in some places etc.

But this graphic makes it look like the water is much hotter than eg Brazil...and that’s already at 28°C

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Re: El Nino - warmer water on South Americas west coast?

Postby elguapo » Wed May 15, 2019 11:53 pm

a quickie reverse image search shows that image is close to a year old....
(is either a stock image....or simply *not* a current image)

here are current temperatures for peru...(via NOAA)
https://www.seatemperature.org/south-america/peru/



and here a global avg sea temp heat map (should be accurate as of today)
Image
https://www.seatemperature.org/

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Re: El Nino - warmer water on South Americas west coast?

Postby Toby » Thu May 16, 2019 12:55 am

So it’s confusing!

BTW, I love pink!

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Re: El Nino - warmer water on South Americas west coast?

Postby evan » Thu May 16, 2019 8:07 am

It is a "surface temperature anomaly map".

Showing the deviation of the temperature compared to the average surface temperature during an el nino event.

Don't confuse them with the actual measured temperatures, impossible to have the arctic seas warmer than the tropics ;)
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Re: El Nino - warmer water on South Americas west coast?

Postby elguapo » Thu May 16, 2019 11:54 am

evan wrote:
Thu May 16, 2019 8:07 am
It is a "surface temperature anomaly map".

Showing the deviation of the temperature compared to the average surface temperature during an el nino event.

Don't confuse them with the actual measured temperatures, impossible to have the arctic seas warmer than the tropics ;)
ok.
then here is a 'current' sea temperature anomaly map'..
(current as of this week)

Image

Sea Surface Temperature (SST) Anomaly

SUMMARY: CRW's SST Anomaly is produced by subtracting the long-term mean SST (for that location in that time of year) from the current value. A positive anomaly means that the current sea surface temperature is warmer than average, and a negative anomaly means it is cooler than average. The spatial resolution is 0.5-degree (50-km), and the data and images are updated twice-weekly. Animations of the most recent SST Anomaly images are also available online.

CRW's near-real-time global SST Anomaly product makes it possible to quickly pinpoint regions of elevated SSTs throughout the world oceans. It is especially valuable for the tropical regions where most of the world's coral reef ecosystems thrive. It is also very useful in assessing ENSO (El Niño-Southern Oscillation) development, monitoring hurricane "wake" cooling, observing major shifts in coastal upwellings, etc.

A twice-weekly SST anomaly at a 0.5-degree (50-km) grid is calculated by subtracting the daily climatological SST of the last day of the twice-weekly period at that grid from the corresponding twice-weekly SST (described in Sea Surface Temperature Section). The formula for obtaining the anomaly is

SST_anomaly = SST - Daily_SST_climatology

The color range of temperature anomalies displayed on the SST Anomaly charts is -5.0 to +5.0 °C (or Kelvin). Areas with SST anomaly values less than -5.0 °C are displayed as -5.0 °C, and areas with values greater than +5.0 °C are displayed as +5.0 °C. Note that these anomalies are somewhat less reliable at high latitudes where more persistent clouds limit the amount of satellite data available for deriving accurate SST analysis fields and climatologies.

Data and images of both near-real-time and archived SST anomalies are available from the CRW website, along with the operational 0.5-degree monthly mean SST climatologies. Animations of SST Anomaly images for the past six months are also available.

Charts of the retrospective 1984-1998 monthly mean SST anomalies are available online at 36-km resolution.

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Re: El Nino - warmer water on South Americas west coast?

Postby JakeFarley » Fri May 17, 2019 1:00 am

elguapo wrote:
Wed May 15, 2019 10:26 pm
correct me if i'm wrong but doesnt el niño= much warmer temperatures in el caribe=more thermal winds in places like
buen hombre and cabarete? (and also much more violent weather in general in the hurricane zone
From what I've read, El Nino produces more wind shear in the Atlantic ocean and Carribean sea resulting in less hurricane formation. I've noticed that we sometimes have a windier summer here on the west coast of Florida during El Nino years.


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