As La Niña fades, this is not surprising. Dr. Roy Spencer is back at work and reports the new lower troposphere number. Note also the global sea surface temperature graph below, which is quite interesting. I’m sure Bob Tisdale will be interested. – Anthony
UAH Temperature Update for April, 2011: +0.12 deg. C
YR MON GLOBAL NH SH TROPICS
2010 01 0.542 0.675 0.410 0.635
2010 02 0.510 0.553 0.466 0.759
2010 03 0.554 0.665 0.443 0.721
2010 04 0.400 0.606 0.193 0.633
2010 05 0.454 0.642 0.265 0.706
2010 06 0.385 0.482 0.287 0.485
2010 07 0.419 0.558 0.280 0.370
2010 08 0.441 0.579 0.304 0.321
2010 09 0.477 0.410 0.545 0.237
2010 10 0.306 0.257 0.356 0.106
2010 11 0.273 0.372 0.173 -0.117
2010 12 0.181 0.217 0.145 -0.222
2011 01 -0.010 -0.055 0.036 -0.372
2011 02 -0.020 -0.042 0.002 -0.348
2011 03 -0.101 -0.073 -0.128 -0.342
2011 04 0.120 0.199 0.042 -0.229
NEW! Monthly UAH temperature reports and global images.
La Nina Fades
The global average lower tropospheric temperature anomaly for April 2011 jumped up to +0.12 deg. C, further evidence that La Nina is fading.
I have also updated the global sea surface temperature anomaly from AMSR-E through yesterday, May 9 (note that the base period is different, so the zero line is different than for the lower tropospheric temperature plot above):


I see ocean heat content discussed here and elsewhere from time to time, but I have never seen a discussion of what causes it to increase. The clear implication is that it is increasing because of warmer atmospheric surface temperatures, but that makes no sense to me. Surely the small increase in warming of the atmosphere to date could not transfer a significant amount of heat to the oceans. It seems obvious to me the only way that the oceans could accumulate much heat would be through direct heating from solar radiation. If that is occurring, wouldn’t that be direct evidence of a decrease in cloud cover, instead of evidence for AGW?
I have been following the situation at Fukushima Daiichi rather closely from the time it happened and can report that there have been zero fatalities that can be attributed to any sort of radiological event. There have been dramatically fewer casualties of any kind at the TEPCO site throughout the disaster. It is clear that the safest place one could have been during the Earthquake/Tsunami was at the Power Station. It is highly likely–I should say certain– that the number of deaths from this reactor incident will turn out to be zero. Not zero now, zero in fifty years.
http://www.world-nuclear-news.org/RS_Deaths_confirmed_at_Fukushima_Daiichi_0304111.html
Roy Spencer comments
[i]I computed an April 2011 average from the Discover website after interpolating the missing days at the end of the month, and compared it to April 2010 (which is the best way to get an estimate of the official anomaly), and I get 0.13 deg C lower (-0.01) than our official number (+0.12) which had the missing data included.
Even considering the slightly different global-averaging strategy and missing days, though, this seems to be a rather large discrepancy. I’ve asked John if he has any ideas why….I’ll let you know what we find.[/i]
Think Of It As Settled Science In Action
I must say I find these numbers pretty hard to believe, considering how unusually cool it seemed in my area for most of the month. My electricity usage for the month was way down compared to previous Aprils.
So I see three graphs there Dr. Roy; talking SST .
There’s a solid gray line graph that is almost a horizontal straight line, then there is a dotted gray line that is almost a horizontal straight line; and then there is that bright blue graph that goes all over the place.
So which is the SST, and what are the other two lines that clearly are unrelated to the blue graph in any conceivable way.
Can somebody please explain why there are three graphs, and only one set of labels.
The record SOI has finally gone down.
http://www.bom.gov.au/climate/enso/
http://stateoftheocean.osmc.noaa.gov/atm/soi.php
I agree with Ken. Expect six more months of cool and likely a double dip Nino 3.4
Pretty quick rebound on the temps there.
@ur momisugly A. Patterson Morre:
” The clear implication is that it is increasing because of warmer atmospheric surface temperatures, but that makes no sense to me. ”
Many people make the mistake in thinking that the atmosphere “warms” the earth’s surface. It is actually the opposite. The sun warms the earth’s surface, which in turn warm the atmopshere above it. Keeping that in mind. it is insolation (incoming solar radiation) that warms the oceans. The amount of insolation is primairily dependent upon how far one is from the equator. The angle of incidence determines how much sunlight hits any given location on the earth’s surface. At the equator, the sun is nearly perpindicular to the surface, which means that for any given surface area there is more heat energy as compared to locations in the higher latitudes. And since oceans can absorb this heat energy, the Pacific Ocean becomes very important, as it is not only the largest body of water, but much of it resides in the tropics and subtropics. Some scientists therefore call the Pacific the great atmopsheric thermostat.
Again, the atmosphere doesn’t warm the oceans; the sun warms the oceans. But, the verdict is still out on why is the main controlling mechanism for ocean heat content. Obviously the ultimate controlling mechanism is the sun. However, we do not have the means or knowledge to accurately model the dynamics of the ocean. The person who can do that will surely deserve a Nobel.
Dear Eric
So far deaths due to the nuclear accident stand at 1. I believe a crane fell on him. Anticipated future repercussions? Bad press, panic, ongoing stupid energy policy and tens of thousands dead every year due to lack of affordable power. Other death rate increases due to mining and transportation of millions of tons of coal and other fossil fuels, and the occasional death as another stupid windmill self destructs.
The difference between fears and reality would be funny if the consequences were not so tragic.
46 nuclear plants were involved. How many would have died if the plants had been coal or natural gas fired?
“”””” JP says:
May 11, 2011 at 9:14 am
@ur momisugly A. Patterson Morre:
” The clear implication is that it is increasing because of warmer atmospheric surface temperatures, but that makes no sense to me. ”
Many people make the mistake in thinking that the atmosphere “warms” the earth’s surface. It is actually the opposite. The sun warms the earth’s surface, which in turn warm the atmopshere above it. “””””
Well JP, even that is not strictly correct. It is incontrovertible that the sun also warms the atmosphere, and also that the effect is greatly dependent on atmospheric “greenhouse” gases such as H2O, CO2, and O3; all of which are capable of absorbing various parts of the incoming solar spectrum energy. However this atmospheric warming must come at the expense of surface/ocean warming, since solar spectrum energy that is captured by the atmosphere, then does not reach the surface to get sequestered, mostly in the deep oceans. The release of that captured energy as LWIR from the atmosphere,is isotropic in distribution so only half of it reaches the ground, and the rest escapes to space. The result is a net loss of energy absorbed by the oceans due to atmospheric solar energy absorption.
It would then be hard to sell the notion that the net flow of heat between the atmosphere and the earth surface, is in the direction of warming the surface. That would seem to be an elementary violation of the second law.
An even sillier but widely held notion is that somehow the presence of clouds (cumulus) leads to an increase in the solar energy (sunlight) that reaches the earth surface. A simple stick in the sand drawing of the solar irradiation of the earth, say between an hour after sunrise, to an hour before sunset, would demonstrate to even a fifth grader; that removing such a cloud will let all of the sunbeam, reach the surface; whereas the cloud is bound to scatter some of that sunbeam back into space. The increase in earth albedo, with increased cloud cover, proves beyond any doubt, that clouds MUST reduce the solar energy that reaches the earth surface; they can NEVER increase it. The special case of grazing (near) incidence sunlight scattering towards earth, instead of a clean miss; merely proves the general case.
@george Smith,
I’m not sure what your point is. Are you saying that in fact it is the atmosphere that warms the land? That would be news to me.
Two plant workers bodies were found in one of the flooded reactor buildings after some of the water was finally pumped out, apparently drowned by the tsunami.
Looking at the temp graph, does anyone *not* see that as a general rising trend with a slope of about 0.1C/decade?
“”””” JP says:
May 11, 2011 at 12:05 pm
@george Smith,
I’m not sure what your point is. Are you saying that in fact it is the atmosphere that warms the land? That would be news to me. “””””
Well JP, how could I possibly have explained it more directly.
YOU suggested that the LAND/OCEAN (SURFACE) warms the ATMOSPHERE and the ATMOSPHERE does NOT warm the SURFACE.
I believe I said explicitly, that having the atmosphere warm the surface (i.e. a net transfer of heat from a generally colder atmosphere to a generally warmer surface, was a direct violation of the second law; thereby agreeing with you that it DOES NOT happen.
All I added was that a significant part of the warming of the ATMOSPHERE comes, not from the SURFACE, via conduction/convection/evaporation/LWIR Radiation, but by direct solar warming of the atmosphere because of H2O/CO2/O3 absorption of energy in the solar spectrum (not LWIR).
And I pointed out that that amount of solar spectrum energy was then NOT available to be stored in the deep oceans or other surface features; but that about half of that energy could be expected to ultimately reach the surface as LWIR emitted from the atmosphere. I did NOT suggest that would warm the surface; in fact I have on several occasions pointed out that atmospheric LWIR towards the surface, largely results in prompt surface evaporation from the ocean, because of the high absorption coefficient for LWIR wavelengths in water.
So I’m puzzled that you could misconstrue that to mean I was suggesting the atmosphere warms the surface. NO !! Merely pointing out that other factors contribute to the atmosphere warming, and thereby directly lead to a LOWERING of the (solar spectrum) energy from the sun that reaches the surface.
George E. Smith says:
May 11, 2011 at 2:30 pm
(responding to)
“”””” JP says:
May 11, 2011 at 12:05 pm
All I added was that a significant part of the warming of the ATMOSPHERE comes, not from the SURFACE, via conduction/convection/evaporation/LWIR Radiation, but by direct solar warming of the atmosphere because of H2O/CO2/O3 absorption of energy in the solar spectrum (not LWIR).
OK. So, lettuce continue that thought trend for a moment. 8<)
Case 0. At the equator (latitude 0.0), light (solar energy) penetrates straight through a narrow band of atmosphere (its gasses, solids, aerosols, dust and clouds) and strikes the ground at a 90 degree perpendicular angle. A portion – depending on day and season and regional environment – of that energy is absorbed in the atmosphere, and a portion strikes the ground. Of that hitting the ground, some is absorbed (right?) and some of that is re-emitted back "up."
So, what are these proportions of the original solar energy – at the equator over land (I guess a "generic land" has to be assumed by the GCM'ers) and over the sea. (Again, I guess a generic sea has o be assumed by the modelers.)
Case 45. (Or any other latitude band.) Further north and south, the solar energy must pass through a much thicker atmosphere before it can hit the earth. More distance = More absorption by gasses, aerosols, dust, more reflection by increasingly shallow angle cloud tops. Once it gets near the ground, it hits the ground (or sea!) at an ever decreasing angle of incidence, and is spread out much more over every sq meter of ground that it does hit. Both reduce energy/sq meter of ground or sea surface significantly, but emittance back "up" from the ground to space stays the same as it was near the equator. That is, each sq meter of surface will emit "straight up" from the ground and will re-emit up through a perpendicular "column of air" that is the same height as it is at the equator. (The atmosphere is a little thinner at the poles because it is colder, but let's ignore that for now.)
Case 90. At the poles, between the equinoxes (and over the summer of each hemisphere), all of the light will be absorbed in the atmosphere: None can be absorbed on any given sq meter on the surface because the inbound energy is parallel to the curved top of the globe.
Second, just as one can look at the sunset/sunrise directly even at the equator without being blinded because of atmospheric absorption through the thicker atmosphere, at the poles there is no energy left to be absorbed on the surface because of atmospheric absorption before the energy arrives at the surface.
Third, the angle of incidence of the inbound rays just before the poles on ice and open water is less than 21 degrees, so the inbound energy is reflected off both surfaces and is not absorbed by the surface. (Any reflected energy is absorbed again by the rest of the atmosphere it must travel through. This is fine, but that energy is deposited back in the polar atmosphere, NOT the polar sea surface or land surface.)
Given all this, why does the CAGW ice community insist on maintaining their melting sea ice albedo positive- feedback-into-oblivion hype for the (north) polar sea ice?
PhilM says:
May 11, 2011 at 1:35 pm (Edit)
Looking at the temp graph, does anyone *not* see that as a general rising trend with a slope of about 0.1C/decade?
The real slope – assuming you believe anything in climate fields can actually be plotted as a straight line! – is in the graph.
With a Negative slope. Yes, despite your apparent denial, globally measured actual world temperatures are declining for the past 14 years, or half of a 30 year “climate cycle”.
racooke;
Typo — I expect you meant “without being blinded”.
My typo: “racookpe”. Sorry!
racookpe1978 says:
May 11, 2011 at 8:08 pm
With a Negative slope. Yes, despite your apparent denial, globally measured actual world temperatures are declining for the past 14 years, or half of a 30 year “climate cycle”.
You do, of course, have evidence for this?
negative slope over the past 14 years?!! If this data was the share market or the price of oil or your weight, you would conclude that there is variability, but overall, it is going up.
La Nina is such a divisive event. It makes coolish areas colder, and warmish areas warmer. It might seem odd, but natural events are by their nature unbalanced. The coolish areas might be colder, but not as much as the warmish areas are warmer. This means that a single temperature anomaly will seem very much at odds with the experiences of people in the coolish and warmish zones.
All I know is, April set a record for cold here in Washington state. Combine that with way-above average rainfall, and we’ve got fields that are too wet to plant and farmers praying for some global warming–soon!
OK, imagine for a minute that you didn’t know what the temperature graph represented, and therefore you didn’t have any particular desire for it to say one thing or another. Would you not say “looks like a noisy but unmistakeable upward trend over 20 years with a blip around 1997”. Agreed?
I say stop denying the facts and you can start seriously debating the policies.
IMHO.
“”””” racookpe1978 says:
May 11, 2011 at 8:01 pm
George E. Smith says:
May 11, 2011 at 2:30 pm
(responding to)
“”””” JP says:
May 11, 2011 at 12:05 pm
All I added was that a significant part of the warming of the ATMOSPHERE comes, not from the SURFACE, via conduction/convection/evaporation/LWIR Radiation, but by direct solar warming of the atmosphere because of H2O/CO2/O3 absorption of energy in the solar spectrum (not LWIR).
OK. So, lettuce continue that thought trend for a moment. 8<)
Case 0. At the equator (latitude 0.0), light (solar energy) penetrates straight through a narrow band of atmosphere (its gasses, solids, aerosols, dust and clouds) and strikes the ground at a 90 degree perpendicular angle. A portion – depending on day and season and regional environment – of that energy is absorbed in the atmosphere, and a portion strikes the ground. Of that hitting the ground, some is absorbed (right?) and some of that is re-emitted back "up."
So, what are these proportions of the original solar energy – at the equator over land (I guess a "generic land" has to be assumed by the GCM'ers) and over the sea. (Again, I guess a generic sea has o be assumed by the modelers.)
Case 45. (Or any other latitude band.) Further north and south, the solar energy must pass through a much thicker atmosphere before it can hit the earth. More distance = More absorption by gasses, aerosols, dust, more reflection by increasingly shallow angle cloud tops. Once it gets near the ground, it hits the ground (or sea!) at an ever decreasing angle of incidence, and is spread out much more over every sq meter of ground that it does hit. Both reduce energy/sq meter of ground or sea surface significantly, but emittance back "up" from the ground to space stays the same as it was near the equator. That is, each sq meter of surface will emit "straight up" from the ground and will re-emit up through a perpendicular "column of air" that is the same height as it is at the equator. """""
Well racookpe1978 , let me take a totally wild arse guess here; lacking any peer reviewed factual evidence; that you are NOT and Optical Engineer. Am I close to being right ? Maybe half right ?
If we assumed; and you know what that means, that the entire surface of the earth was optically smooth, like a camera lens surface. Well then it could reflect a portion of the incident sunlight, into an outgoing cone of about 0.25 degrees, half angles, same as the incoming sunlight is.
But the real surface is anythin but optically smooth (down to submicron surface features), so in fat even the sea never reflects a vertical beam straight up, and most real surfaces would be highly scattering. Best guess would be that real surface would be partially Lambertian, meaning a cosine of angle intensity variation (from the surface normal), and could have some small specular (mirror like) directed reflectance component.
As for LWIR emissions from the surface; they will be at least Lambertian (for calm ocean surface) up to isotropic for real world rough surfaces.
So there simply isn't ever any directly vertical "up" path, that would be the same thickness all over the earth.
And I'm not sure what the link is. I simply pointed out that under no circumstances, barring immediate near sunrise, or sunset, will any cloud placed anywhere in the sky, act to increase the amount of solar spectrum energy (incoming) that reaches the surface of the earth. They can only reduce it from the no cloud case.
PhilM says:
May 11, 2011 at 1:35 pm
Looking at the temp graph, does anyone *not* see that as a general rising trend with a slope of about 0.1C/decade?
////////////////////////////////////////
Phil, I see prior to the 98 El Nino a fairly flat line at about -0.15C and following the 98 El Nino a fairly flat line at about at about +0.2C. Accordingly, I do not see a generally rising trend of 0,1C per decade but instead a flat trend throughout the period save for the step change brought bout by the 98 El Nino.