What I'll comment on (again) is that Bob refuses to accept the greenhouse effect. He's no better than the dragon slayers and one wonders why Anthony allows him to write at WUWT, since Anthony's said many times that he doesn't allow slayers to have a voice.
Noise vs signal
Bob doesn't always seem to understand what he's quoting. For example, he quotes this passage from an NPR article (mainly about ENSO guru Kevin Trenberth):
You can think of it like a staircase. Temperature is flat when a natural cool spell cancels out the gradual temperature increase caused by human activity. But when there’s a natural warm spell on top of the long-term warming trend, the story is dramatically different.
Notice the part about the "long-term warming trend". The long term trend is the signal. ENSO is noise. ENSO comes and goes while the world continues to warm up. ENSO events do have a big impact on weather in parts of the world, but they are not the cause of climate change. The floods and droughts that can come from La Niña and El Niño (respectively, in Australia) are weather variations, not climate change. (And drought can happen without an ENSO event, too.)
Bob doesn't believe there is an anthropogenic cause to the long term warming trend. He attributes it to El Niño heating up the world by magic. Bob doesn't see ENSO as internal variability. He thinks it causes global warming. It doesn't. El Niño and La Niña shift energy within the system - between the atmosphere and the ocean and within the ocean. They don't generate energy from nothing, which is what Bob would have you believe. According to Bob, conservation of energy doesn't hold on earth. He seems to think that energy is created out of nothing. He wrote at one point about an article about ENSO at SkepticalScience.com:
We can see evidence of this in the way that alarmists portray the instrument temperature record. Refer to the SkepticalScience animation on their recent ENSO Temperature Trends webpage. There they write in explanation of the first frame of their animation:
First Frame: The Cowtan & Way (2013) global surface temperature data show a clear increasing trend, but it is “noisy” because multiple influences are present in the data (AGW, ENSO, volcanoes, solar cycle).
Of course, any portrayal of El Niño and La Niña events as noise is intended to mislead or misdirect. It’s nothing more than nonsense based on their misunderstandings or misrepresentations of El Niño and La Niña processes. There are a number of other examples being used by the global warming enthusiasts.
ENSO is sacred to Bob. He cannot bear to think it might be described as "noise" that can mask or amplify the long term warming signal in temperature data. To Bob, ENSO is the be all and end all of climate. This is what Bob finished up with (my bold italics):
A strong El Niño event can also cause an upward shift in the temperatures of two-thirds of the surface of the global oceans, while having no apparent long-term effect on the other one-third. Those upward shifts in surface temperatures give the appearance of a relatively steady rise in global surface temperatures when the data are looked at globally. As a result, the rise in global surface temperatures have been incorrectly attributed to human-induced global warming. That means the climate science community is no closer to finding evidence of the human fingerprint in global warming than they were in the early 1990s, the early years of the IPCC. The IPCC has no one to blame for that than themselves, with their focus on carbon dioxide.
Why haven't the oceans boiled dry by now?
Thing is, ENSO type events have been happening forever - or as close to forever as is relevant to now. If Bob were correct that El Niño warms up but La Niña doesn't balance this out, then by now the oceans should have all boiled dry.
From the WUWT comments
Gary Pearse says:
April 30, 2014 at 6:52 pm
Bob, a casual review of the “steps” leaves an impression as expressed by Trenberth that the climate shifts up with an El Nino but it doesn’t shift back down. Looking at your fig. 15, one could imagine the steps going up forever. Isn’t there more to say about this process?
Chuck L says:
April 30, 2014 at 7:36 pm
Bob, the step-increases in temperatures shown in your diagrams and charts make sense. Although I know you are not in the prediction business, I am curious whether you think a period of step-decreases can occur and if so, what the mechanism would be. Thanks.
Bob doesn't answer either of these two questions directly. He mumbles something about the AMO (Atlantic Multidecadal Oscillation). Incidentally, there's been a new paper on the AMO recently, in Nature that looks interesting (open access).
April 30, 2014 at 8:25 pm
“THERE ARE NO OTHER WEATHER-RELATED EVENTS ON EARTH THAT COMPARE IN MAGNITUDE TO AN EL NIÑO
El Niño events are by far the largest of any weather-related phenomenon taking place on the planet, and they impact weather around the globe.”
Except for the Seasons. Summer>Winter, etc, are much larger than El Nino
April 30, 2014 at 9:49 pm
Do plankton (etc) act like clouds in the ocean, keeping the sun’s energy near the surface where it is easily re-radiated to space ?
I don't know about it all being re-radiated to space. However organisms in the ocean do have a role to play in the carbon cycle and climate (though probably not through anything to do with sulphate emissions and clouds in the sky).
Otter (ClimateOtter on Twitter) says:
May 1, 2014 at 1:50 amYes, as a matter of fact, deniers ask and scientists oblige, for example, here and here.
Question: Is there any definitive paleorecord of El Ninos and La Ninas? You have noted that La Ninas, in some (most?) cases, do not quite cancel out the warming from El Ninos. It occurred to me that it would be interesting to see how / if the cycles corresponded and changed, with the LIA.
May 1, 2014 at 2:09 am
Bob your theory means that the temp always goes up in steps and never down, that sounds like an agreement with CO2 adding heat all the time….sorry, it does not gell with me…nothing keeps on going up in the oceans…they warm and they cool, the sun is the likely culprit imo
Except the world has been getting hotter even though the sun hasn't been sending more heat our way:
Knudsen, Mads Faurschou, Bo Holm Jacobsen, Marit-Solveig Seidenkrantz, and Jesper Olsen. "Evidence for external forcing of the Atlantic Multidecadal Oscillation since termination of the Little Ice Age." Nature communications 5 (2014). doi:10.1038/ncomms4323