USA climate groups NOAA/NCDC create warming adjustments in GHCN V3 long term Australian weather records; Alice Springs, Adelaide, Broken Hill and Willis Island

All of these animations are pairing GHCNv2 (after combining sources at same location) with the GHCNv3 (after GISS homogeneity adjustment) – there are many more.

11 thoughts on “USA climate groups NOAA/NCDC create warming adjustments in GHCN V3 long term Australian weather records; Alice Springs, Adelaide, Broken Hill and Willis Island”

  1. This is how the temps have been adjusted for each of the four stages that GISS has undertaken – from the ‘raw’ data for V1 to the final V4. This is Brisbane’s Eagle Farm from around 1950-2012.
    ‘Raw’ data (after combining sources at the same location)
    data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=501945780000&dt=1&ds=1
    V2 data (after cleaning/homogeneity adjustment
    data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=501945780000&dt=1&ds=2
    V3 data (after removing suspicious records)
    data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=501945780000&dt=1&ds=13
    V4 (after GISS homogeneity adjustment)
    data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=501945780000&dt=1&ds=14
    Note how each version is different from the previous one, each progressively showing a greater degree of warming. Now check BOM’s record. www.bom.gov.au/jsp/ncc/cdio/weatherData/av?p_display_type=dataGraph&p_stn_num=040223&p_nccObsCode=36&p_month=13

  2. Thanks for posting those progressive adjustments Ian. Quite an eye opener. sorta’ gives you the creeps’
    It would be interesting to determine the mean for each of those stages of adjustment.
    Are the mean Max temps readily available ?
    your Bom link has an annual mean of about 25.4 deg c
    From the raw data’ the mean looks about roughly 20.6 deg
    That is a very large disparity
    They must of added some warmer stations to arrive at the higher value
    There are some 15 stations up to 30km from the Brisbane regional office
    Maybe good to list all annual means in all surrounding stations for interest
    www.bom.gov.au/climate/data/

  3. I don’t know why the discrepancies either. The Lat/Lon positions are the same for GISS and BoM sites. The GISS has seems to have modified the temps using other stations i.e. removing suspicious records, combining surrounding stations, etc. But a diff of 5.0C – seems a bit much.
    Mystery prevails.

  4. Oh dear. Just to take one example, Willis Island goes from no trend to a one degree warming from 1970 to 2000. Yet it is one of those remote locations where one should be very reluctant to homogenize the record by comparing with “surrounding” stations. And if you look at the GISS station list centred on Willis Island data.giss.nasa.gov/cgi-bin/gistemp/find_station.cgi?lat=-16.3&lon=149.98&dt=1&ds=14 you find the nearest comparators, Innisfail, Bowen and Ayr, are all over 400 km away on the mainland and none of them are filled in with data for the last 20+ years anyway.

    I am sick of these datasets that just go in and fiddle with records based on myriad protocols and exceptions, and then present the result as climate fact. Their proponents should be obliged to explain, for each station separately, exactly what adjustments they made and why. Has anyone seen this for GHCN versions?

  5. I emailed GISS on 2 May – they forwarded my mail to NOAA – when NOAA responded I asked them last Tuesday if they could let me have the ID/names of the nearest 6 or so stations they rely on to adjust Giles in 1965 – still waiting.
    I posted this in 2006 – How NASA GISS inserts warming into USA rural T data – quoting emails from Dr Jim Hansen about GISS adjusting Florida rurals – Arcadia and Everglades – he could provide no good reason why – but the adjustments stood. These huge orgs do what they like.

  6. Warwick:
    I was looking at the GISS figures recently and found that 1980 was now 0.59℃ warmer than 1950.
    A few years ago someone (I think Steve McIntyre) commented that “in 1981 Jim Hansen pointed out (as proof of recent warming) that 1980 was only 0.15℃ COOLER than 1950, whereas now it is 0.2℃ warmer”.

    It appears that 1980 is getting warmer and warmer. If you discount the obvious FUDGE then there has been no net warming since the late 1930’s, but can we rely on any of the other figures?

    O/T but this will upset the IPCC and assorted hangers on.

    hockeyschtick.blogspot.co.uk/2014/05/new-paper-questions-basic-physics.html

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