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Hottest Year? Not According To Satellites, Joe!

April 16, 2015

By Paul Homewood




Even at this early stage of the year, there is a concerted effort to make it the “warmest evah”.

Joe Romm has this graph of the GISS numbers for the first three months of the year, and Gavin has clearly been busy!






Unfortunately, the more comprehensive and accurate satellites show no such thing.





For January to March, UAH rank this as only 4th warmest behind 2010, 1998 and even 2007.




According to RSS, this year so far is even lower down the rankings in 8th place.

Given the weak El Nino conditions in place since last April, there is nothing out of the ordinary about the satellite rankings.


We have been repeatedly assured for the past year that satellite temperatures would catch up with the surface datasets. They have not, and instead the latter continue to diverge more and more.

The alarmist tactic now is to tell us to simply ignore the satellite data, as it is “not measuring the same thing”, and is therefore somehow irrelevant. This is all highly amusing, as the UK Met Office, back in 2013, was reassuring us that the surface datasets were reliable as:

“Changes in temperature observed in surface data records are corroborated by records of temperatures in the troposphere recorded by satellites”


This divergence is now becoming the elephant in the room, which the likes of NASA and their media allies are desperately trying to ignore.

It is time that the matter was fully investigated by a properly independent inquiry. 

  1. Bloke down the pub permalink
    April 16, 2015 10:41 am

    It is clearly possible to convince the gullible that meteorologist, way back when, couldn’t read a thermometer properly and that their records need to be adjusted accordingly. How Gavin thinks he can carry on adjusting C21st data and not be ridiculed though is beyond me.

  2. Elaine Supkis permalink
    April 16, 2015 12:34 pm

    It was the hottest year EVAH in Los Angeles and we all know that Hollywood is the Center of the Universe so everywhere else is equally hot.

    The fact that much of North America not only froze last winter but is very much colder than usual even today, doesn’t matter since no movie stars live here in the colder climates.

    • John F. Hultquist permalink
      April 16, 2015 4:10 pm

      The “movie stars” do go to Colorado to ski and carry-on where, at the moment, there is a serious snow episode.

  3. Al Shelton permalink
    April 16, 2015 4:55 pm

    Go to Real Science……….
    for additional evidence

  4. April 17, 2015 12:21 am

    Scientists have confirmed that a significant portion of the warming since 1980 can be attributed to the placement of thermometers in urbanized areas, where much of the heat gain is artificial, and not climatic. How else to explain why land surface temperatures remained in sync with sea surface temperatures until about 1980, and then land surfaces warmed by +0.8 C while sea surface temperatures warmed by less than 0.3 C, as seen here…

    On a yearly average, urban areas are substantially warmer than the non-urban fringe by 2.9 °C
    The results indicate that urban heating is attributable to a large excess in heat from the rapidly heating urban surfaces consisting of buildings, asphalt, bare-soil and short grasses. In summer, the symptoms of diurnal heating begin to appear by mid-morning and can be about 10°C warmer than nearby woodlands.
    [E]xtraneous (nonclimatic) signals contaminate gridded climate data. …[T]he data contamination likely leads to an overstatement of actual trends over land. Using the regression model to filter the extraneous, nonclimatic effects reduces the estimated 1980–2002 global average temperature trend over land by about half.
    [I]n the climate of Poland the occurrence of the UHI (urban heat island) is the most important feature of urbanized areas. Over 80% of nights are characterized by surplus heat in towns, amounting to 2–4°C [above non-urban areas], and sporadically to 8°C and more.
    The long-term mean annual temperature record (1885 –1993) shows warming over the past century, with much of the warming occurring in the most recent three decades. However, our analyses show that half or more of this recent warming may be related to urban growth, and not to any widespread regional temperature increase.
    The trend of surface air temperature (SAT) is a critical indicator to climate change in varied spatial scales. Due to urbanization effects, however, the current SAT records of many urban stations can hardly meet the demands of the studies. Evaluation and adjustment of the urbanization effects on the SAT trends are needed, which requires an objective selection of reference (rural) stations. … The results showed a highly significant urbanization effect of 0.074°C/10yr and urbanization contribution of 24.9% for the national stations of mainland China for the time period 1961-2004
    •The seasonal and temporal variability and trends of UHI in Athens was studied.
    •UHI [the Urban Heat Island effect] accounts for almost half of Athens’ warming.

    The study explores the interdecadal and seasonal variability of the urban heat island (UHI) intensity in the city of Athens. Daily air temperature data from a set of urban and surrounding non urban stations over the period 1970–2004 were used. Nighttime and daytime heat island revealed different characteristics as regards the mean amplitude, seasonal variability and temporal variation and trends. The difference of the annual mean air temperature between urban and rural stations exhibited a progressive statistically significant increase over the studied period, with rates equal to + 0.2 °C/decade. A gradual and constant increase of the daytime UHI intensity was detected, in contrast to the nighttime UHI intensity which increases only in summer, after the mid 1980s.
    [R]apid urbanization has a significant influence on surface warming over east China. Overall, UHI effects contribute 24.2% to regional average warming trends. The strongest effect of urbanization on annual mean surface air temperature trends occurs over the metropolis and large city stations, with corresponding contributions of about 44% and 35% to total warming, respectively. The UHI trends are 0.398°C and 0.26°C decade. The most substantial UHI effect occurred after the early 2000s, implying a significant effect of rapid urbanization on surface air temperature change during this period.
    Daily minimum temperature (Tmin) and maximum temperature (Tmax) data of Huairou station in Beijing from 1960 to 2008 are examined and adjusted for inhomogeneities by applying the data of two nearby reference stations. Results show that relocations of station cause obvious discontinuities in the data series, and one of the discontinuities for Tmin are highly significant when the station was moved from downtown to suburb in 1996. The daily Tmin and Tmax data are adjusted for the inhomogeneities. The mean annual Tmin [temperature minimum] and Tmax [temperature maximum] at Huairou station drop by 1.377°C and 0.271°C respectively after homogenization [relocation from the city to the suburbs].
    The heating effect due to urbanization was found to penetrate about 600–800 m height in the atmosphere over the city, and the two surface heat island cells were found to combine aloft.

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