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crandles

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Re: Global Surface Air Temperatures
« Reply #100 on: March 22, 2014, 11:32:53 PM »
Curious! With giss using a base period of 1951-1980, you would probably expect it to be longer since the last time it had been cooler than the base period because 1981 to 1990 was warmer than 1951 to 1960.

But loti gisstemp reports negative months not only of Feb 85 at -8 but also

Jul 85 at -4
Sep 87 at -2
Sep 92 at -3 and
Feb 94 at -1

http://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts+dSST.txt

Now if we used 1901 to 1930 as the base period, then we could claim it was much longer since the last below average month. So this type of claim is a bit weird anyway.

I guess there is more variability in loti gisstemp than in noaa perhaps because of Giss's more aggressive extrapolation into the arctic.


ChasingIce

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Re: Global Surface Air Temperatures
« Reply #101 on: March 22, 2014, 11:47:47 PM »
Can I ask what the scientific reasoning is for using baselines that are so far into the past? 

crandles

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Re: Global Surface Air Temperatures
« Reply #102 on: March 23, 2014, 01:42:43 AM »
Can I ask what the scientific reasoning is for using baselines that are so far into the past?

No idea really but my guesses are that it is largely to do with:

Seems traditional for the period to end with a 0.

People never get around to doing those once every 10 year tasks, for fear that it will break something such that something crazily wrong gets reported and the person doing it might therefore get some flak. i.e. If it aint broke, don't risk it.

Possibly? want to see large anomalies reported to emphasise the changes that are happening. What message does changing base period and giving smaller numbers give?

ChasingIce

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Re: Global Surface Air Temperatures
« Reply #103 on: March 23, 2014, 04:10:16 AM »
I was under the impression that NASA, NOAA, etc were changing to a 30yr base period in accordance with the World Meteorological Organization. 

http://www.wmo.int/pages/prog/wcp/ccl/mg/documents/mg2011/CCl-MG-2011-Doc_10_climatenormals1.pdf

After clicking some random links, it appears that this isn't really the case as of yet.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #104 on: April 03, 2014, 07:49:39 PM »
Based on NCEP/NCAR Reanalysis, 2014 tied with 2005 for the third warmest March on record. NCEP/NCAR data tend to track quite well with other global data sources, including NOAA and NASA, but there will be a slight variation in the rankings. NCEP/NCAR interpolates missing data grids using properties of physics, which other data sets do not capture.

One can see a plot of the recent March surface air temperature data here:
http://www.esrl.noaa.gov/psd/cgi-bin/data/timeseries/timeseries.pl?ntype=1&var=Air+Temperature&level=2000&lat1=-90&lat2=90&lon1=0&lon2=360&iseas=1&mon1=2&mon2=2&iarea=1&typeout=2&Submit=Create+Timeseries

The NASA temperature map will look something close to this when they report later this month:

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #105 on: April 03, 2014, 08:38:43 PM »
Going by the reanalysis data, north of 70N it was also the joint mildest March on record and the mildest first 3 months of the year, by 0.3C.

MARCH


JAN-MAR

deep octopus

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Re: Global Surface Air Temperatures
« Reply #106 on: April 03, 2014, 08:52:38 PM »
The Arctic warming is quite impressive this year. DMI's temperature readings for north of 80N have been above average everyday this year through at least April 2nd (yesterday). That would make sense to show up on the reanalysis data as a particularly mild winter.

http://ocean.dmi.dk/arctic/meant80n.uk.php

idunno

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Re: Global Surface Air Temperatures
« Reply #107 on: April 03, 2014, 09:36:11 PM »
Can I ask what the scientific reasoning is for using baselines that are so far into the past? 

I believe that by long established convention, geologists use 1950 as "the present".

DoomInTheUK

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Re: Global Surface Air Temperatures
« Reply #108 on: April 04, 2014, 10:42:23 AM »
I believe that by long established convention, geologists use 1950 as "the present".

IIRC it's due to the inabality of carbon dating to work after the 1950's due to the contamination from nuclear testing.

icefest

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Re: Global Surface Air Temperatures
« Reply #109 on: April 04, 2014, 11:52:37 AM »
I believe that by long established convention, geologists use 1950 as "the present".


IIRC it's due to the inabality of carbon dating to work after the 1950's due to the contamination from nuclear testing.

The combination of FF and nuclear testing: http://en.wikipedia.org/wiki/Radiocarbon_dating#The_effects_of_human_activity
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BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #110 on: April 10, 2014, 04:17:41 PM »
UAH data has March at 0.17C above the 81-0 average, making it the joint 9th warmest on record.
http://www.nsstc.uah.edu/data/msu/t2lt/uahncdc_lt_5.6.txt


BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #111 on: April 12, 2014, 12:47:10 PM »
GISS has updated, and March was the 4th warmest on record at +0.7C above the 51-80 average.



That makes 2014 the 7th warmest year to date, and the 12 months from April to March the 4th warmest on record.

Buddy

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Re: Global Surface Air Temperatures
« Reply #112 on: April 12, 2014, 01:09:44 PM »
Wow.  Now you can see why the Siberian forest fire season has already started....

Russia is really off the charts....
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BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #114 on: April 14, 2014, 11:52:59 AM »
At 0.21C above the 81-10 average, March 2014 is the 4th warmest on record according to the JMA.





http://ds.data.jma.go.jp/tcc/tcc/products/gwp/temp/mar_wld.html

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #115 on: April 22, 2014, 05:21:09 PM »
4th warmest March and 7th warmest year to date, according to NCDC.
http://www.ncdc.noaa.gov/sotc/global/2014/3


deep octopus

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Re: Global Surface Air Temperatures
« Reply #116 on: April 30, 2014, 05:30:15 PM »
Based on daily composite data through April 28th, 2014 is set to have the 3rd warmest April on   NCEP/NCAR Reanalysis. Only 2010 and 2007 have greater surface air temperatures for April on this metric. 2014 would be in 3rd, with 2005 and 2012 somewhat close behind. Again, it seems likely that this predicts a strong reading on other, more "official" metrics like NASA and NOAA. Despite a cool start to the Pacific, global temperatures have remained well elevated so far in 2014, despite a minor slump in February.

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #117 on: May 03, 2014, 12:04:57 PM »
You were right DO, 3rd warmest April on record according to reanalysis data



And 5th warmest year to date

« Last Edit: May 03, 2014, 06:12:22 PM by BornFromTheVoid »

Rubikscube

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Re: Global Surface Air Temperatures
« Reply #118 on: May 07, 2014, 06:21:12 PM »
UAH (Version 5.6) for April was released yesterday at +0,19 C, which is a minor uptick from last month (+0,17). With the Nino being neutral/slightly negative this winter, this should not really be a big surprise, though it should be noted that the tropics has warmed by 0,1 C since March according to this newest update.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #119 on: May 13, 2014, 02:44:09 AM »
NASA GISS has released its April 2014 data, and it's an aggressive read, as expected:



On the GISS table, April 2014 was +0.73 C over 1951-1980, making it the 2nd hottest April on record. From January to April, 2014 is the 5th hottest year so far.
« Last Edit: May 13, 2014, 02:54:00 AM by deep octopus »

Buddy

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Re: Global Surface Air Temperatures
« Reply #120 on: May 13, 2014, 03:46:03 AM »
You can understand why Russia's wildfire season started in early April.....45 days early.  Russia is "set up" to be torched as bad....or worse.....than it was in the summer of 2010.  Fire season in Russia could be pretty brutal this year.

This week Moscow should see its first real "warm anomaly" of the late spring/early summer.
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icefest

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Re: Global Surface Air Temperatures
« Reply #121 on: May 13, 2014, 08:00:09 AM »
A repeat of the 2011 fires around Moscow, Buddy?
Open other end.

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #122 on: May 13, 2014, 11:46:17 AM »
Interesting to note that, going by the GISS data, if the next 8 months averaged the same as 2013 did we'd still end up with the joint 3rd warmest year on record.

Buddy

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Re: Global Surface Air Temperatures
« Reply #123 on: May 13, 2014, 12:49:22 PM »
<<A repeat of the 2011 fires around Moscow, Buddy?>>

I think it was 2010: http://uk.reuters.com/article/2010/08/12/us-russia-heat-peat-idUKTRE67A3H120100812

Of course....there were also some bad fires in 2012 whose smoke made it all the way to Seattle and Portland:  http://blog.seattlepi.com/thebigblog/2012/07/11/thank-russia-for-seattles-gorgeous-sunsets/

But....either way.....Russia is PRIMED to burn....and it will only continue to get worse.

Moscow's record high EVER was just over 100 degrees set in July of 2010.  In about 6 days Moscow will already hit 86 degrees.

Like the song goes......"the heat is on." 

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Shared Humanity

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Re: Global Surface Air Temperatures
« Reply #124 on: May 13, 2014, 04:43:59 PM »
What is truly amazing is that the eastern half of NA is the only part of the northern hemisphere that saw a negative temperature anomaly but, of course, since the US is the center of the universe, we now need to worry about global cooling.

JimD

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Re: Global Surface Air Temperatures
« Reply #125 on: May 13, 2014, 06:50:55 PM »
Ha!  Good point.  It was almost freezing at my house here in AZ this morning and I had turned off the heat as I had decided summer was here.  The wife was not happy when we woke up and it was below 60 F inside.  LOL

Record highs by Fri though.
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CraigsIsland

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Re: Global Surface Air Temperatures
« Reply #126 on: May 13, 2014, 09:33:09 PM »
Ha!  Good point.  It was almost freezing at my house here in AZ this morning and I had turned off the heat as I had decided summer was here.  The wife was not happy when we woke up and it was below 60 F inside.  LOL

Record highs by Fri though.

The "swings" (for lack of a better word at the moment) whether they're are these quick whiplashes like in AZ or the earlier start times of wildfire seasons (long term patterns) are being reported and noticed. These negative feedbacks are circulating (pun intended) around the globe and entering the public conscious. Amazingly, I'm also seeing politicians from both sides of the aisle put more political stock into their stumps. I.E. "Most definitely caused by humans; take action NOW" and some others going "yes there's climate change but it's not cause by humans, keep supporting cheap fossil fuels". Very interesting months ahead :/. Let's hope for political action now rather than later and being unprepared.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #127 on: May 13, 2014, 09:58:38 PM »
We reached 90 for the first (or second) time this year on the east coast. May was forecast to be a much cooler than average month in the southeastern US, but reality is showing otherwise so far.

It's disconcerting that the first four months of the year were during fairly cool tropical Pacific conditions. El Niño has just started this month and I think these temperature maps are going to get darker shades of red and brown as time goes on. Personally, I think 2014 will be the hottest year on record. NASA's data shows 2005 and 2010 roughly tied for first, at about 0.65 C above average. This is not a hard target to beat. Three of the four months this year have exceeded that number already, and El Niño will just ramp up ocean temperatures heading into next winter (then land temperatures will rocket in 2015.) If a volcano or sudden La Niña creep up unexpectedly, I'll change that position, but yeah, this year is going to be a disappointing one for AGW deniers.

I also agree that Russia wildfire season could be serious. Snow cover looks atrocious going into peak daylight.

Michael Hauber

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Re: Global Surface Air Temperatures
« Reply #128 on: May 14, 2014, 12:59:36 AM »
History shows minimal response in global temperatures during Jan-Nov of the first year of an El Nino, and temperatures then jumping up in Dec and more so Jan, and continuing warm through much of first half of the second year. 

Having run through the numbers in some detail for UAH I'd expect 2014 to almost certainly not be a record year, with my current calculated projection at 0.31 and a record of 0.42.  I project 2015 to be around 0.5, and the year will probably be a record, but a weak temperature increase similar to say 2006 could still see the record missed. 

With a quick eyeball on GISS, I notice we are slightly behind the target, and with a small December jump the most likely result I'd guess on a 50/50 chance for this year, and an almost certainty for 2015.
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BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #129 on: May 15, 2014, 09:41:47 AM »
Warmest April on record according to the JMA



Five Warmest Years (Anomalies)

1st. 2014(+0.31°C), 2nd. 1998(+0.30°C), 3rd. 2010(+0.27°C), 4th. 2005(+0.21°C), 5th. 2012,2007(+0.16°C)



http://ds.data.jma.go.jp/tcc/tcc/products/gwp/temp/apr_wld.html

deep octopus

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Re: Global Surface Air Temperatures
« Reply #130 on: May 15, 2014, 08:06:53 PM »
Wow, and usually JMA seems a more conservative data set.

I'm watching the NCEP/NCAR data again. First 13 days of this May are nearly tied for first with the monthly averages of 2010 and 2012. The CCI Reanalyzer is showing the next two weeks to be significantly above average globally: up to +0.80 C over 1979-2000 during the zeroth hours and each additional 24-hour interval.
http://cci-reanalyzer.org/Forecasts/

Another +0.70 reading on GISS looks possible, and likely, this month.

I don't expect much of a difference to come out in NOAA's record.
« Last Edit: May 15, 2014, 09:04:52 PM by deep octopus »

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #131 on: May 15, 2014, 09:08:05 PM »
How are you calculating the global temps from the daily ncep/ncar data, DO?

deep octopus

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Re: Global Surface Air Temperatures
« Reply #132 on: May 15, 2014, 09:38:37 PM »
Right, I should probably explain that since I keep going on about it. It's a bit laborious, but in case anyone wishes to try it, here's the method I use.

Within the Daily Mean Composite page: http://www.esrl.noaa.gov/psd/data/composites/day/

I set the variables to Air Temperature at the Surface level. For each day, or combination of days, run a plot for the entire world ("All" region). I use the "Anomaly" value. I'm sure you could get basically the same trend lines using the "Mean" values.

After plotting, I save the .txt file under "Get a copy of the text data file...", at the bottom left of the screen. You'll notice, the rows are latitudes and the columns are longitudes, in 2.5 degree grids; starting with 90N up top and 90S at the bottom. After opening the .txt file (space delimited in Excel), average the anomaly values of each row, then weigh the latitudes by area. Since the cosine of 90 is 0, for those polar values, I try to "interpolate" the area-weighted value by using a latitude value of 88.75 (average of 90 and 87.5.) Not perfect, but a good approximation. So for May 13th, 2014, I got a global air surface temperature anomaly of +0.497 over 1981-2010.

I was able to test this method by running the monthly values for each year against the plots on the timeseries page: http://www.esrl.noaa.gov/psd/cgi-bin/data/timeseries/timeseries1.pl

It seems to work well enough for purposes of keeping a daily track of the global temperature trends.

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #133 on: May 15, 2014, 09:51:50 PM »
Right, I should probably explain that since I keep going on about it. It's a bit laborious, but in case anyone wishes to try it, here's the method I use.

Within the Daily Mean Composite page: http://www.esrl.noaa.gov/psd/data/composites/day/

I set the variables to Air Temperature at the Surface level. For each day, or combination of days, run a plot for the entire world ("All" region). I use the "Anomaly" value. I'm sure you could get basically the same trend lines using the "Mean" values.

After plotting, I save the .txt file under "Get a copy of the text data file...", at the bottom left of the screen. You'll notice, the rows are latitudes and the columns are longitudes, in 2.5 degree grids; starting with 90N up top and 90S at the bottom. After opening the .txt file (space delimited in Excel), average the anomaly values of each row, then weigh the latitudes by area. Since the cosine of 90 is 0, for those polar values, I try to "interpolate" the area-weighted value by using a latitude value of 88.75 (average of 90 and 87.5.) Not perfect, but a good approximation. So for May 13th, 2014, I got a global air surface temperature anomaly of +0.497 over 1981-2010.

I was able to test this method by running the monthly values for each year against the plots on the timeseries page: http://www.esrl.noaa.gov/psd/cgi-bin/data/timeseries/timeseries1.pl

It seems to work well enough for purposes of keeping a daily track of the global temperature trends.


Thanks very much for that, well explained!

Buddy

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Re: Global Surface Air Temperatures
« Reply #134 on: May 16, 2014, 05:11:55 AM »
Hey....forget Miami.  I'm heading to Moscow, Russia.  Forecast for the 8 days starting on May 19th through May 26th is high temperatures between 79 F - 83 F.

The AVERAGE HIGH for May in Moscow:   64 F
The AVERAGE HIGH for June in Moscow:  71 F
The AVERAGE  HIGH for July in Moscow:   75 F

For the 8 days in May, the high is forecast to be higher than the average high for July:(

Russia is in deep s*** for wildfire season this year unless things change DRASTICALLY.



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CraigsIsland

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Re: Global Surface Air Temperatures
« Reply #135 on: May 16, 2014, 07:48:43 AM »
Hey....forget Miami.  I'm heading to Moscow, Russia.  Forecast for the 8 days starting on May 19th through May 26th is high temperatures between 79 F - 83 F.

The AVERAGE HIGH for May in Moscow:   64 F
The AVERAGE HIGH for June in Moscow:  71 F
The AVERAGE  HIGH for July in Moscow:   75 F

For the 8 days in May, the high is forecast to be higher than the average high for July:(

Russia is in deep s*** for wildfire season this year unless things change DRASTICALLY.

That's amazing. Nice statistics usage.

Buddy

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Re: Global Surface Air Temperatures
« Reply #136 on: May 17, 2014, 02:11:34 PM »
For the next 14 days....Moscow HIGH temperatures forecast to be 80 - 91 degrees F (with the exception of tomorrow, which is 77).

So...the forecast high for the next 14 days is expected to be higher than the average HIGH temperature for July (75 is the average HIGH temp for July).

http://www.timeanddate.com/weather/russia/moscow/ext

With cold air being pulled down into the middle of the US.....looks like the warm air is being pulled into Arctic from the Russian side...

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Buddy

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Re: Global Surface Air Temperatures
« Reply #137 on: May 17, 2014, 02:31:58 PM »
By the way...it looks like the 3 month outlook for the upper midwest of the US from Wyoming and Montana.....east to upper Illinois and Michigan.....is for the upper midwest of the US to be colder than normal.

I would not be surprised to see continued HEAT on the Russian side of things.....and being pulled into the Arctic from the Russian side of the world.
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Shared Humanity

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Re: Global Surface Air Temperatures
« Reply #138 on: May 17, 2014, 03:09:41 PM »
By the way...it looks like the 3 month outlook for the upper midwest of the US from Wyoming and Montana.....east to upper Illinois and Michigan.....is for the upper midwest of the US to be colder than normal.

I would not be surprised to see continued HEAT on the Russian side of things.....and being pulled into the Arctic from the Russian side of the world.

This is similar to the pattern we saw in eastern NA for most of the winter. There was actually a very light snow in the north suburbs of Chicago the night before last and the lows last night were 32F.

Do we still have that stationary high pressure ridge over the north Pacific? This contributed to this stuck pattern through the winter.
« Last Edit: May 17, 2014, 04:25:54 PM by Shared Humanity »

Buddy

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Re: Global Surface Air Temperatures
« Reply #139 on: May 17, 2014, 04:44:35 PM »
The high pressure area(s) have "receded south" somewhat as you can see in the following:

http://www.opc.ncep.noaa.gov/P_sfc_full_ocean_color.png
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deep octopus

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Re: Global Surface Air Temperatures
« Reply #140 on: May 20, 2014, 05:13:33 PM »
The combined average temperature over global land and ocean surfaces for April 2014 tied with 2010 as the highest on record for the month, at 0.77°C (1.39°F) above the 20th century average of 13.7°C (56.7°F).




Record warm heat observed in eastern Siberia, Mongolia, and China. Record heat in the Norwegian Sea, North Pacific, Indian Ocean, and Sargasso Sea. Like HadCRUT4, NOAA does not interpolate missing grid data, so we have the mid-latitudes overrepresented while the poles made virtually no contributions to April's reading. An unsavory reading all the same.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #141 on: May 20, 2014, 05:45:09 PM »
In Reply #132, I explained how I was able to calculate daily global surface air temperature anomalies using NCEP/NCAR Reanalysis data. Through May 18th, I've estimated that May 2014 is (barely) edging out 2010 and 2012 for the hottest May on record. Whereas we have two weeks remaining in the month, this is a warning that May will be yet another well above-average month (I tenatively predict between +0.65 and +0.75 C over 1951-1980 on NASA's record.)

So it stands that 2014 is on pace to be likely one of the three warmest years on record, the other two years being 2005 and 2010. I'm expecting 2014 to push to the warmest on record, especially (but also despite) with the development of El Niño.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #142 on: June 02, 2014, 11:49:32 PM »
In the last two weeks of May, a spike in warm air recorded in the NCEP/NCAR Reanalysis has pushed May to the hottest such month on record, and by a good margin. It is likely that May 2014 will be observed as among the hottest such months on record when looking at the major temperature indices. This leads me to think that on NASA's GISS Land-Ocean Temperature Index (L-OTI), for instance, with a 1951-1980 base period, a May 2014 reading of between 0.65 and 0.75 C is rather likely. The NCEP/NCAR data with a record warmest May suggests it to be on the higher end (perhaps between 0.70 and 0.75 C).

Whether May is on the lower end (0.65) or higher end (0.75), it is my prediction that 2014 will have had the 2nd warmest March-April-May (MAM) period on record, behind only 2010. Since NCEP/NCAR is not perfect, I know this kind of analysis is sort of like putting the cart before the horse. But to at least document how good of a fit my presumptions are compared to other sets, it will give me a sense of how useful it is to continue using the Reanalysis tool. So far, it is a sound predictor.

Neven

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Re: Global Surface Air Temperatures
« Reply #143 on: June 03, 2014, 12:01:19 AM »
Thanks a lot for the update, DO!
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BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #144 on: June 10, 2014, 05:25:10 PM »
3rd warmest May on record at +0.33C according to the UAH data, which I think makes it the 5th warmest year to date.
« Last Edit: June 10, 2014, 05:42:52 PM by BornFromTheVoid »

BornFromTheVoid

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Re: Global Surface Air Temperatures
« Reply #145 on: June 16, 2014, 02:21:42 PM »
The warmest April on record is followed by the warmest May on record according to the JMA.





Five Warmest Years (Anomalies)

1st. 2014(+0.31°C), 2nd. 1998(+0.27°C), 3rd. 2012,2010(+0.22°C), 5th. 2013(+0.21°C)


It's also the warmest Spring on record.



Five Warmest Years (Anomalies)

1st. 2014(+0.28°C), 2nd. 2010(+0.26°C), 3rd. 1998(+0.25°C), 4th. 2002(+0.18°C), 5th. 2005(+0.17°C)

http://ds.data.jma.go.jp/tcc/tcc/products/gwp/temp/may_wld.html

bassman

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Re: Global Surface Air Temperatures
« Reply #146 on: June 17, 2014, 08:30:43 PM »
NASA .76 hottest May on record beating .70 from 2010 and 2012. 2014 is now tied with 2010 as the hottest year on record needing just .68 anomalies from here on out to be the warmest on record. The “pause” will soon be behind us.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #147 on: June 18, 2014, 04:06:56 AM »
A convincing record.



Also, under NASA's data, 2014 had the 2nd warmest spring (MAM) on record, behind 2010. Making it also the warmest spring in an ENSO neutral year on record.

It's unclear now if El Niño will actually establish. But El Niño or not, I've been expecting either 2013 or 2014 to be the hottest year, right on schedule. We may get it. I'm not expecting an impressive read for June so far, but it tends to be that September through November are strong months, as they are the fastest warming. Even a decent JJA followed by a strong continuation of fast warming SON could get us there.
« Last Edit: June 18, 2014, 04:24:04 AM by deep octopus »

deep octopus

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Re: Global Surface Air Temperatures
« Reply #148 on: June 18, 2014, 04:40:07 AM »
A caveat from Gavin Schmidt at NASA:

Please note May 2014 GISTEMP LOTI numbers preliminary due to a glitch with Chinese CLIMAT data. Update to follow pic.twitter.com/F9Iv9FH7oa

May not move the needle too much in either direction, but will watch.

deep octopus

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Re: Global Surface Air Temperatures
« Reply #149 on: June 23, 2014, 05:49:10 PM »
And NOAA has come into agreement with the others: warmest May on record

http://www.ncdc.noaa.gov/sotc/global/2014/5

The combined average temperature over global land and ocean surfaces for May 2014 was record highest for this month, at 0.74°C (1.33°F) above the 20th century average of 14.8°C (58.6°F).

The global land surface temperature was 1.13°C (2.03°F) above the 20th century average of 11.1°C (52.0°F), the fourth highest for May on record. For the ocean, the May global sea surface temperature was 0.59°C (1.06°F) above the 20th century average of 16.3°C (61.3°F), making it the record highest for May and tying with June 1998, October 2003, and July 2009 as the highest departure from average for any month on record.

The combined global land and ocean average surface temperature for the March–May period was 0.74°C (1.33°F) above the 20th century average of 13.7°C (56.7°F), making it the second warmest such period on record, behind 2010.

The March–May worldwide land surface temperature was 1.26°C (2.27°F) above the 20th century average, the third warmest such period on record. The global ocean surface temperature for the same period was 0.54°C (0.97°F) above the 20th century average, also the third warmest March–May on record.

The combined global land and ocean average surface temperature for the January–May period (year-to-date) was 0.66°C (1.19°F) above the 20th century average of 13.1°C (55.5°F), the fifth warmest such period on record.


4th warmest land temperatures.
1st warmest ocean temperatures, and also tying as the warmest for any month on record.
1st warmest combined land-ocean.

2nd warmest MAM (northern spring) on record, behind 2010.

From January through May, 2014 is the 5th warmest year on record.