Temperature Trends

January Average Global Temperature Ticked Up from December: Global Temperature Trend Update

Global climate trend since Nov. 16, 1978: +0.12 C per decade



Every month climatologists John Christy and Roy Spencer from the University of Alabama in Huntsville report global temperature trends based on satellite-based instruments that measure the temperature of the atmosphere from the surface up to an altitude of about eight kilometers above sea level. The based on th latest data, they report that while temperatures in the tropical atmosphere continued to drop in January as temperatures there moved closer to their long-term averages, the composite temperatures over both hemispheres bumped slightly warmer in January, especially in the higher latitudes.

Global Temperature Report: January 2017

Tropics cool in January; globe doesn't

Global climate trend since Nov. 16, 1978: +0.12 C per decade

January temperatures (preliminary)

Global composite temp.: +0.30 C (about 0.54 degrees Fahrenheit) above 30-year average for January.

Northern Hemisphere: +0.27 C (about 0.49 degrees Fahrenheit) above 30-year average for January.

Southern Hemisphere: +0.33 C (about 0.59 degrees Fahrenheit) above 30-year average for January.

Tropics: +0.07 C (about 0.13 degrees Fahrenheit) above 30-year average for January.


The researchers add that in the Northern Hemisphere, pockets of warmer than normal air were especially pronounced over the eastern U.S., Canada and the North Atlantic. In the Southern Hemisphere, Australia and a large area of southern ocean between South America and New Zealand were warmer than normal. the month of January, 2017.

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  1. Link, pls? Or at least a bigger (clickable?) graph?

    1. Canadians are sooooo high maintenance.

      1. You lot should just be grateful we let you comment on our websites at all. We’re basically giving you free speech.

        1. +1 C, eh? N, eh? D, eh?

        2. You know, I don’t get what all these greasy Canadians are on aboot.

        3. We need better commenter screening.

  2. Yeah, it was above 60 degrees near D.C. for an almost a week in January. It was weird as hell.

    1. Down here in Hampton Roads, we just call that “a week in January.”

    2. I have been living in the DC area for 12 years now and we have had some warm Januarys including this one, although last year (Snowzilla) and the ones before were much colder than average. Seems like we get a warm one every 5 years or so, followed by some very chilly ones, so it seems to average out.

      1. Is this winter abnormally warm? (Just moved to the DC area from Dallas last month, so I have no clue)

        1. Last month (January) was about 6 degrees warmer than average, December was 2 degrees warmer, so yes-its been pretty warm so far.

          1. El Nino means colder winter in west and warmer in east.

            Weather or Climate?

    3. It’s been a warm January here too. Which happens sometimes. Not as warm as last year, I don’t think.

      I just want more snow. Winter sucks without snow.

      1. And I vowed to move farther south of it snowed in Dallas again this year.

  3. Ron i have a ?

    When the global temperature is measured, this is a bunch of different data points all over and then averaged together?

    Are all these measurements taken at the same times, same places during the day and same total number of measurements from 1978 to now? Like how does this data get produced.

    1. For ground based measurements, you’re on the right track as to their methodology. These days though, since the environment around the measurement stations change they ‘adjust’ the data with their estimates of what the surrounding changes would mean for the data. In other words, the ground measurement station data is a lot of ‘educated guessing’ going back decades and is essentially useless. The same goes for almost all temperature measurements.

      Perhaps unfortunately, the only reliable source of data is satellite but that hasn’t been around long enough to be statistically meaningful in my view but that is my opinion rather than a fact.

  4. I have said this before here, but if all the CO2 in the atmosphere really is starting to cook us, we need to take action to take it out and cool things down with geoengineering, rather than simply cut emissions and wait 200 years for things to get back to normal.

    1. Actually i think a warmer planet would be a good thing. And CO2 will never “cook” us due to diminishing effects on temperature. If a few limousine libs have to buy new beach homes so what?

    2. You know what else is a greenhouse gas, and a more powerful one at that? H2O, and it comprises something to the tune of 80% of the surface of Earth not to mention it outpaces CO2 in the actual PPM makeup of our atmosphere.

      In other words, we really need to do something to get rid of all this water on Earth. It’s going to kill us all!

      1. You know what else is a greenhouse gas, and a more powerful one at that? H2O, and it comprises something to the tune of 80% of the surface of Earth not to mention it outpaces CO2 in the actual PPM makeup of our atmosphere.

        This doesn’t blur the picture well enough. White clouds in the upper atmosphere can readily reflect more radiation out into space than the CO2 below it would effectively trap and/or convert to heat over the same amount of time. That is to say, if you had a thin layer of clouds high enough, you could intuitively/effectively cool the globe at a pace that would put global warming to shame (the same way putting a shade cloth that’s phenomenally better at absorbing IR and trapping heat over your greenhouse will effectively cool your greenhouse!). It’s only when the water and CO2 are effectively mixed or mixing (and not precipitating) that the GH effect really begins to rock.

        Also, if you ever want to see impressionistic scientific data interpretation, look at measurements of CO2 concentration vs. altitude. You could title them all ‘Atmosphere gets thinner as you go up… I think’.

        1. Science is settled. We’ve been told. No need to think.

  5. So what’s the next step, Ron? What are the expected effects of global warming, and what are some effective reactions to those effects?

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