ENSO color tricks from NOAA's Environmental Visualization Lab

Or, “how to hide the decline with color”.

Here’s the image and press release from NOAA NNVL this week to push their hurricane season announcement. Notice anything odd?

Weakening of La Niña but Above Normal Hurricane Season is Predicted

Weakening of La Niña but Above Normal Hurricane Season is Predicted

[Thursday] NOAA issued the 2011 Atlantic Hurricane Season Outlook, which predicts an above-normal year for activity. Though the La Niña continues to weaken in the Pacific, it will continue to effect weather patterns and influence the number of storms that are predicted. During La Niña years, wind shear is reduced in the Tropical Atlantic, creating conditions that are ideal for tropical cyclone formation. This image shows how the sea surface temperatures have changed, on average, from mid-April to mid-May. A warming signature is clearly visible as indicated by the red areas in the Eastern Equatorial Pacific region, an indication of La Niña’s waning strength. Also related to the Atlantic Hurricane Season, warming trends are visible in the Caribbean and Eastern Gulf of Mexico.

========================================================

Looks like pretty weak soup huh? Now compare that to images like these from the WUWT Ocean Resource Page and the ENSO page, and have a look at a prior SST visualization from NNVL:

http://www.osdpd.noaa.gov/data/sst/anomaly/anomnight.current.gif

To be fair, the top image this week from NNVL is about the change in SST, while the two examples above are the current SST. The point I’m trying to illustrate is not about the data, but about the choice of color used to visualize the data.

It sure is easy to make something look weak (or weakening, a word they use in the press release) if you wash it out like NOAA did with their top image. Note that their color scale (shown below for the La Niña is weakening image)  is highly biased towards white, showing only the most extreme temperature in colors:

I wonder what the scale might look like when we have a strong El Niño heating up the planet?

Oh, wait, been there, done that. Here’s the image from NNVL when El Niño was on:

Here’s another:

El Nino Returns

Gosh, El Niño looks angry and threatening doesn’t it? All those fiery reds, yellows and oranges.

Now let’s look at how they communicate a “cool” La Niña in Sept 2010:

La Niña Dominates September

Notice how the red/blue color scale is inverted expanded, compared to the one they used this week, with the neutral white being just a notch on the scale. And for some bizarre reason, they decided to include land temperatures with SST…which they didn’t do in the other images above. The result is the planet still is filled with raging red when trying to communicate a cool SST event.

What we have here, is failure to communicate a concept consistently with color. Imagine the confusion if Unisys or other SST product imagers changed their colors with each image release? So far, NOAA NNVL has not been able to present a consistent color scheme for images that will be mass distributed to the public and press. Each visualization has a different color key.

I think NOAA NNVL should standardize on a SST color palette scheme no matter what the ocean conditions are. Next time we have an El Niño event, and these guys image it, let’s make sure we remind them that they need to be consistent.

Of course, this visualization group has been caught playing tricky pix before, so they may not care, see the before and after when WUWT put then on notice:

NOAA’s sea ice extent blunder

Next time they image ENSO in color, let’s “help them get their mind right”. Cool, cool hand NOAA.

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ferd berple
May 21, 2011 3:32 pm

The US taxpayers are footing the bill for this blatant fraud to hide any weather pattern that does not fit the global warming agenda.
In Canada, the Prime Minister with a minority government defeated the opposition sponsored cap and trade and has been rewarded with a majority government.
In contrast, the US President with a majority government has been pushing cap and trade and was handed a “shelacking” in the last election.
The Canadian economy came through the recent financial crisis reasonably well. In contrast the US is still in serious financial trouble.
Coincidence? Hardly. The US dominated the world economy through energy production. When you have the low cost energy, companies move to your country. Jobs and prosperity result. Tax revenues increase and deficits decrease.
When you increase the cost of energy, companies leave and take the jobs and prosperity with them. Tax revenues decrease and deficits increase. This isn’t rocket science. It is happening consistently everywhere you look in the world.
Email, write, phone your elected representatives and let them know where you stand. Let them know that their prosperity depends on your prosperity. Their jobs depend on your jobs. All it takes for evil to prevail is for good men to do nothing.

May 21, 2011 4:50 pm

Off Topic:
Eruption in Vatnajökull / Grímsvötn glacier started tonight.
http://mbl.is/frettir/innlent/2011/05/21/gosid_i_heimsfrettunum/

u.k.(us)
May 21, 2011 4:51 pm

Woe to those, that underestimate the masses.

Bill Illis
May 21, 2011 5:02 pm

Do you know what is really going to get you going …
… Almost all those regions that are in the Red (ie warmed up) from mid-April to mid-May …
… actually cooled off instead.
Open in new tab and click back and forth. April 15th SST Anomaly.
http://imageshack.us/m/808/55/april15sst.jpg
May 15th SST Anomaly.
http://imageshack.us/m/846/3033/may15sst.jpg

May 21, 2011 5:23 pm

Off Topic.
More info about the eruption in Vatnajökull.
Icelandic Met Office:
http://en.vedur.is/about-imo/news/2011/nr/2174
Eruption has started in GrímsvötnAn eruption began at Grímsvötn volcano at approximately 17:30 UTC, May 21st 2011.
Eruptions in Grímsvötn start as subglacial eruptions, which quickly break the ice cover. At 21:00 UTC, the eruption plume had risen to an altitude of over 65,000 ft (~20 km). Initially, the plume is expected to drift to the east and subsequently to the north. Thus, the ash is not expected to impact aviation in Europe, at least not during the first 24 hours.
The figure on the right (above) shows an image of the eruption cloud at 22:00 UTC. The image is from the Icelandic Met Office weather radar located at Keflavik International Airport, at 220 km distance from the volcano. The cloud extends above a large part of Vatnajökull ice cap. The line marks the approximate location of Grímsvötn volcano.
The last eruption in Grímsvötn occurred in November 2004. Grímsvötn is Iceland’s most frequently erupting volcano.
The figure below shows tremor activity in Grímsvötn associated with the eruption. Note that seismic activity increases after 17:30 UTC.

noticer
May 21, 2011 5:42 pm

“So far, NOAA NNVL has been able to present a consistent color scheme for images that will be mass distributed to the public and press. ”
In the original post, this sentence appears to be missing a “not”…
[Fixed, thanx. ~dbs, mod.]

Jessie
May 21, 2011 8:20 pm

DesertYote says: May 21, 2011 at 11:43 am
Data visualization is a science. Those that produce these graphics are professionals who use that science. Every aspect is engineered to produce just the right message. If the presentation seems to “color” the impression of the audience, it is because that is exactly what it was intended to do.

Yep, they even use it on the 5th graders. Instead of teaching history, logic and arithmetic.
http://www.abs.gov.au/websitedbs/cashome.nsf//Home//history+datasets

Jessie
May 21, 2011 8:24 pm

‘…All statistical stories have a target audience and it is critical that their needs are considered…’
(source Australian Bureau of Statistics [ABS] http://www.abs.gov.au/
1211.0.55.001 – Research Paper: Data Visualisation, Jul 2007

el gordo
May 22, 2011 1:47 am

To have a strong hurricane season I thought it mandatory to have an active La Nina and not neutral conditions as now.

Lars P.
May 22, 2011 1:52 am

Joshua Science says:
May 21, 2011 at 11:16 am
“Climate change affects the color spectrum! It’s worse than we thought!”
Thanks for the laugher Joshua!

Beth Cooper
May 22, 2011 5:31 am

Masters of ‘hide the decline.’

May 22, 2011 6:18 am

What NOAA did was a common statistical trick. They used a different, but valid, measurement in an attempt to fool people. Here is an example of a statistical trick: Suppose Town A had a population increase of 100% and Town B had a population increase of 10%. Which sounds like it is growing faster? Town A of course. However, what if I told you Town A had a population of 10 and it gained 10 people but Town B had a population of 5000 but gained 500 people during the measurement time. Now which do you think is growing faster?
In college I was required to take a statistics class. One of the lessons was how to make statistics tell the message you want while still being truthful. There are many ways to distort the ideas with stats like this. What NOAA did was, not tell you the temperature, but tell you the temperature change. They knew that showing the temperature would convey the wrong message. So, they used a different measurement to tell the message they wanted. These are things that every math student should know how to do.

Pamela Gray
May 22, 2011 6:34 am

Jessie, you get to pick the colors. Try changing them to your preference. By the way, very COOL graph page.

Pamela Gray
May 22, 2011 6:45 am

If you let the data speak before you start your statistical analysis, you often get a more accurate reflection. I like to do raw data scatter plots first. From there, I choose an analysis that would describe, in statistical terms, what I am seeing in the raw data. If presenting to a group of people, I always start with the raw data scatter plot and ask the audience what they see. Data speaks. And the conversation will often lead to a suggestion by the audience as to what statistical analysis would be a proper fit.
The only drawback to this, is that belief trumps data. Nearly always. However, by letting the scatter plot speak first, belief can be cajoled into sitting down while the raw data is allowed to have a conversation with the audience.

Rod Everson
May 22, 2011 8:03 am

ew-3 says:
Anyone remember that a state that went Republican in a presidential election were blue and Dem states were red?
Then one year about a decade ago, all the media seemed to swap their colors.

Yes, but more than a decade ago. Probably Clinton’s 1992 election, or possibly the 1996 election. I remember thinking how ironic it was that the media portrayed the leftist Dems as “Reds” every election, but then suddenly they were the “Blue” states.
Furthermore, all the networks switched the same year, as I recall, which makes me think it was 1992, before Fox News really got rolling since they would have resisted the change, I suspect. It was a coordinated effort by leftist news organizations to remove what was becoming an embarrassing association.

tarpon
May 22, 2011 8:12 am

All this jiggering does is increase property insurance rates …

May 22, 2011 9:20 am

1) Remember the jiggering of data to get rid of the MWP and the LIA to usher in the hockey stick? The trouble with this is eventially you are forced to jigger them back again so that the cooling period coming doesn’t look like the coldest in a thousand years.
2)They had to jigger the 30s temps down to make the 1990s temps hotter when they could see that 1998 was the last gasp of the recent warming period.
3) They had to stop reporting on sealevel rise for 8 months while they figured out how to jigger it to stop it from going down. They wound up adding on an annual factor to sealevel data to account for sealevel drop due to glacial isostatic rebound. This gave a sealevel rise that was otherwise a sealevel drop – they were prepared to destroy an actual metric of use to coastal/harbour engineers and navigators to stop the decline. Now in 30-50 years, the sealevel will indicate that the Maldives and river delta states are under a foot of water when they are actually high and dry.
3) Hansen, under the growing tension (it must be terrible for about a dozen of the most zealous CAGW folk) is now easing in the idea that the world will cool but he can’t let go of the human fault dimension after making such a hue and cry in Congress, protests at coal mines in Virginia and plants in UK and the score of asinine projections that are now proving grossly wrong. He is blaming aerosols – not a la Svensmark – but those manmade ones that originate from the “death train” coal burning.
Please keep a good record of these egregious “adjustments” – they’ve gone from moving the goal posts to changing the game entirely. And R. Gates: you had better move to 50% warmist from 75% (don’t be defending notions that Hansen et al have been abandoning. I see you defending having a temperature scale that is nearly all white except for the red and blue tips of this post to erase the remains of la Nina. Its okay for you to agree that they are not right all the time.

rw
May 22, 2011 12:06 pm

I’m confused about one thing (at least). The article says, “the top image … is about the change in SST, while the two examples above are the current SST”. But both of the latter images carry labels with the term “anomaly”. To me it looks like the difference is between two kinds of change: one between April and May temperatures, the other with respect to some standard baseline temperature.

Pull My Finger
May 23, 2011 6:13 am

Yea, I think they changed about 1984-88? The Democrats were tired of being occularly associated with the Communists. If you notice, all the MSM stations use light blue backgrounds and blue-ish gray for undecided states in their election night maps in order to convey a more “Democratic” nation.
It’s very easy and effective to “Lie With Maps” (a very good book by Mark Mortimer I think) as people really tend to take maps at face value. Now that powerful desktop mappers are available any hack can pretty easily create a nice map, but without the training in the “art and science” of cartography that is so important.
In the first image the red-white-blue isn’t a horrible choice, but blue certainly doens’t pop out like red. The third image is definately the best constructed of the three IMO, as far as color and projection.

Pull My Finger
May 23, 2011 6:18 am

Exactly, and this is something a real cartographer would have accounted for, unless of course they were subverted by the Climate Ninnies as well.
———-
What NOAA did was a common statistical trick. They used a different, but valid, measurement in an attempt to fool people. Here is an example of a statistical trick: Suppose Town A had a population increase of 100% and Town B had a population increase of 10%. Which sounds like it is growing faster? Town A of course. However, what if I told you Town A had a population of 10 and it gained 10 people but Town B had a population of 5000 but gained 500 people during the measurement time. Now which do you think is growing faster?

reason
May 23, 2011 7:54 am

I guess “movie night” at the NNVL last week was Schindler’s List?
Maybe they’ve hit a bit of a funding crunch, and can’t afford replacing the color toner cartridges until next month?
My college required a statistics class, as well. I went into the semester convinced I was going to be bored, but it wound up being a fascinating class, as my eyes were opened to just how careful one needs to be when developing visualizations of data to keep everything neutral.
I don’t recall any assignments where we were specifically instructed to distort. This professor was all about absolute, unwavering integrity; show the data simply, in a straighforward and easy to understand manner, and let it speak for itself. The very notion that a scientific organization would be publishing a map that shows changes in temperature change (temperature delta delta, can I helpya helpya?) would’ve irked the man on a fundamental level. Something like that requires a level of mental “digestion” that most people won’t bother to conduct, and will simply glance at the picture, and take in the initial “taste” of, as Anthony put it, weak soup.

Bowen
May 23, 2011 11:15 am

I don’t know if it has been mentioned yet, but not tooooo long ago only hurricanes were named . . . and now we have “named storms”! (giving the illusion of more storms if, you are my age)!