Archives par mot-clé : El Nino

EL NIÑO HAS ARRIVED — NO WONDER IT’S A WARM MONTH

by GWPF, February 26, 2019


“El Niño conditions across the equatorial Pacific have come together, and we can now announce its arrival,” said Mike Halpert, deputy director, NOAA’s Climate Prediction Center, and ENSO forecaster.

NOAA gives a 55% chance of El Niño conditions persisting through the spring.

Sea surface temperatures in January — orange-red colors are above normal.

“While sea surface temperatures are above average, current observations and climate models indicate that this El Niño will be weak, meaning we do not expect significant global impacts through the remainder of winter and into the spring,” Halpert said.

Does The Climate-Science Industry Purposely Ignore A Simple Aspect of Strong El Niño Events That Causes Long-Term Global Warming?

by Bob Tisdale, January 20, 2019 in WUWT


It was a little more than 10 years ago that I published my first blog posts on the obvious upward steps in the sea surface temperatures of a large portion of the global oceans…upward steps that are caused by El Niño events…upward steps that lead to sunlight-fueled, naturally occurring global warming.

There is a very simple explanation for those El Niño-caused upward shifts that also make themselves known in the sea surface temperature data for much larger portion of the global oceans than I first presented a decade ago…the upward steps that are blatantly obvious in the satellite-era (starts November 1981) of sea surface temperature data for the South Atlantic, Indian and West Pacific Oceans, as shown in Figure 1, which together cover about 52% of the surfaces of the global oceans.

 

Is the forecasted El Niño for this year fading away? It sure looks that way.

by Anthony Watts, January 8, 2019 in WUWT


In late 2018, there were some predictions that there would be a significant El Niño event in 2019. There were strong hints of an El Niño event in both SST data and forecasts. In an April 6th 2018 essay, Bob Tisdale suggested  “Looks like one may be forming right now.”

But if we look at the animation provided by NOAA’s Climate prediction center, it sure looks like it has been fading:

Modern Climate Wavelet Patterns

by Renee Hannon, December 17, 2018 in WUWT


Wavelet analyses of modern global temperature anomalies provides an excellent visualization tool of temperature signal characteristics and patterns over the past 150 years. Scafetta recognized key temperature oscillations of about 9, 20 and 60-years using power spectra of global surface temperature anomalies. There has been much discussion about the 60-year quasi-oscillation both in WUWT and publications.

Detrending the temperature time series and removing the 60-year underlying trend enables insights into the interplay of interannual and decadal scales. Wavelet analyses reveals these periodic signals have distinguished patterns and characteristics that repeat over time suggesting natural external and internal influences. Interannual wavelet patterns that consist of 9-year and 3 to 5-year quasi-oscillations are repeated and dominate over 70% of the instrumental record. The 3 to 5-year discontinuous breakouts are coincident to El Niño and La Niña events of the El Niño-Southern Oscillation (ENSO). A period of quiescence from 1925 to 1960 is devoid of most wavelet signals suggesting different or transitional climate processes.

NOAA: El Niño is expected to form and continue through the Northern Hemisphere winter 2018-19

by Anthony Watts, December 13, 2018 in WUWT


EL NIÑO/SOUTHERN OSCILLATION (ENSO) DIAGNOSTIC DISCUSSION
issued by CLIMATE PREDICTION CENTER/NCEP/NWS and the International Research Institute for Climate and Society 13 December 2018
ENSO Alert System Status: El Niño Watch
Synopsis: El Niño is expected to form and continue through the Northern Hemisphere winter 2018/19 (~90% chance) and through spring (~60% chance).

Weak sun and El Nino events may create a colder and snowier than normal winter season in much of the eastern half of the USA

by Anthony Watts, October 22, 2018 in WUWT


The fast approaching solar minimum and its potential impact on the upcoming winter season

By Meteorologist Paul Dorian

Overview

In the long term, the sun is the main driver of all weather and climate and multi-decadal trends in solar activity can have major impacts on oceanic and atmospheric temperatures. In addition, empirical observations have shown that the sun can have important ramifications on weather and climate on shorter time scales including those associated with the average solar cycle of around 11-years. For example, there is evidence that low solar activity during solar minimum years tend to be well-correlated with more frequent “high-latitude blocking” events compared to normal and this type of atmospheric phenomenon can play an important role in the winter season.

his plot shows the daily observations of the number of sunspots during the last four solar cycles back to 1 January 1977 according to Solar Influences Data Analysis Center (SIDC). The thin blue line indicates the daily sunspot number, while the dark blue line indicates the running annual average. The current low sunspot activity is indicated by the arrow at the lower right of the plot. Last day shown: 30 Sep 2018. Data source: climate4you.com.

The La Nina Pump

by Willis Eschenbach, July 16, 2018 in WUWT


Sometimes a chance comment sets off a whole chain of investigation. Somewhere recently, in passing I noted the idea of the slope of the temperature gradient across the Pacific along the Equator. So I decided to take a look at it. Here is the area that I examined.

I’ve written about this temperature gradient before, in a post called The Tao of El Nino. If you take time to read that post, this one will make more sense. …

Conditions for formation of Super El Ninos determined

by Anthony Watts, July 12, 2018 in WUWT


A University of Aizu team has identified two distinct Indo-Pacific processes shaping the unique features and extraordinary ferocity of super El Ninos. A systematic analysis of these processes and their interactions will improve forecasts of the elusive super El Ninos, the researchers claim.

Extremely warm  are a notable feature of the super El Ninos that occurred in 1972, 1982, and 1997. The fact that Pacific Ocean processes responsible for generating regular El Ninos could not explain this key signature of super El Ninos came as a big shock,” says Dachao Jin, co-author of the study.

Cooling Ocean Air Temps

by Ron Cruz, June 5, 2018 in ScienceMatters


Presently sea surface temperatures (SST) are the best available indicator of heat content gained or lost from earth’s climate system.  Enthalpy is the thermodynamic term for total heat content in a system, and humidity differences in air parcels affect enthalpy.  Measuring water temperature directly avoids distorted impressions from air measurements.  In addition, ocean covers 71% of the planet surface and thus dominates surface temperature estimates.  Eventually we will likely have reliable means of recording water temperatures at depth.

Recently, Dr. Ole Humlum reported from his research that air temperatures lag 2-3 months behind changes in SST.  He also observed that changes in CO2 atmospheric concentrations lag behind SST by 11-12 months.  This latter point is addressed in a previous post Who to Blame for Rising CO2?

The May update to HadSST3 will appear later this month, but in the meantime we can look at lower troposphere temperatures (TLT) from UAHv6 which are already posted for May. The temperature record is derived from microwave sounding units (MSU) on board satellites like the one pictured above… (…)

NOAA says La Niña in the Pacific is over

by R. Lindsey, NOAA, May 11, 2018 in WUWT


Why do U.S. climate forecasters pay so much attention to a pattern that operates in the remote tropical Pacific? Because the Pacific is the world’s biggest ocean, and disruptions to its climate have a long reach. The seesawing changes in tropical rainfall, winds, and ocean temperature that accompany La Niña and its warm-phase partner, El Niño, trigger a cascade of potentially predictable impacts on seasonal climate in the United States and beyond.


The Pause Has Returned.

by P. Homewood, April 5, 2018 in NotaLotofPeopleKnowThat


Hadcrut now have numbers out for February, giving an anomaly of 0.523C, measured against the 1961-90 baseline, slightly down on January’s 0.556C.

This means that the last six months have been below 0.59C.

It is clear that temperatures are settling down at a similar level to the period between 2002 and 2007, following the record El Nino of 2015/16. Bear in mind as well that the degree of accuracy, according to the Hadley Centre, is about +/-0.1C. As such, it cannot be said that there has been any statistically measurable warming since 2001, or indeed previously.

It is possible temperatures may drop further in coming months, with weak La Nina conditions established, although these are predicted to disappear by the summer.

Un El Niño hors norme ne signifie pas la reprise du réchauffement mondial

by Uzbek, 24 janvier 2018 in ClimatEnv&Energie


Dans un communiqué du 18 janvier 2018, l’OMM (Organisation météorologique mondiale) classe 2017 dans les trois années les plus chaudes depuis le début des mesures. Le record reste détenu par l’année 2016 (+ 1,2° C au-dessus des températures de la période pré industrielle) suivie par l’année 2015 (+ 1,1° C) toutes deux influencées par un épisode El Niño intense.

L’année 2017 serait ainsi l’année la plus chaude sans influence d’un phénomène El Niño. L’OMM suggère ainsi une reprise du réchauffement mondial après une pause des températures de plus de 17 ans.

(…)

Alarmist Retreat Begins: Natural Factors May Cause New Global Warming Hiatus

by Dr Benny Peiser, January 24, 2018 in ClimateChangeDispatch


The solar variability is not negligible in comparison with the energy imbalance that drives global temperature change.

Therefore, because of the combination of the strong 2016 El Niño and the phase of the solar cycle, it is plausible, if not likely, that the next 10 years of global temperature change will leave an impression of a ‘global warming hiatus.’ —James Hansen et al, 18 January 2018

The Global Warming Policy Foundation (GWPF) has lodged a new complaint with the BBC about its misleading reporting on global warming.

See also here

Further proof El Ninos are fueled by deep-sea geological heat flow

by Janes E Kamis, January, 27 in CliateChangeDispatch


The 2014-2017 El Nino “warm blob” was likely created, maintained, and partially recharged on two separate occasions by massive pulses of super-heated and chemically charged seawater from deep-sea geological features in the western North Pacific Ocean. This strongly supports the theory all El Ninos are naturally occurring and geological in origin. Climate change / global warming had nothing to do with generating, rewarming, intensifying, or increasing the frequency of the 2014-2017 El Nino or any previous El Nino.

If proven correct, this would revolutionize climatology and key aspects of many interrelated sciences such as oceanography, marine biology, glaciology, biogeochemistry, and most importantly meteorology. Information supporting a geological origin of El Ninos is diverse, reliable, and can be placed into five general categories as follows: (…)

See also here