Model Prediction, BoM comments and my
summary
Maximum temperature Outlook Map for October to December 2004
published by BoM mid September 2004."Increased
warmth favoured for much of eastern and southern Australia", says BoM.
My comments; Additional to the BoM headline there is clearly
a predicted slight cool anomaly in northern WA / west NT.
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Actual temperature anomaly maps from the BoM four months
after the corresponding Outlook and my comments.
Observed maximum temperature anomalies October
to December 2004, published
mid January 2005. Instead of the predicted warm axis across the south as
modelled in the September "Outlook" the EXACT OPPOSITE has happened
in that the main axis of warming is in the NORTHERN half of the continent,
not the SOUTHERN. It gets worse for the BoM because the prediced sl
cool anomaly in northern WA / west NT turned out to be part of the MAIN WARM anomaly. To
be fair SW WA and much of SE & E Aust are passable. Maybe a 40%
overall.
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Minimum temperature Outlook
Map for October to December 2004 published by BoM mid
September 2004.
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Observed minimum temperature
anomalies for October to December 2004.
The predicted intense warmth in SW of WA was a failure but the rest
of the map is fair.
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Maximum temperature Outlook
Map for September to November 2004 published by BoM mid
August 2004."Warmer than average Spring for south
Queensland ", says BoM.
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Observed maximum temperature
anomalies for September to November 2004. Published mid December 2004. The best validation of any
Outlook since the March 2003 max temp Outlook, maybe a 65%.
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Minimum temperature Outlook
Map for September to November 2004 published by BoM mid
August 2004.
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Observed minimum temperature
anomalies for September to November
2004. The real world warm axis E - W across the centre was missed
by the model as is the cool anomaly in northern WA / NT. SW WA EXACTLY WRONG,
but hey !! lets not nit-pick, there have been many worse efforts
than this.
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Maximum temperature Outlook
Map for August to October 2004 published by BoM mid July
2004."Increased seasonal warmth for parts of WA
and SE Australia", says BoM. My comments; Warm
in SW WA and west Vic then cooling sl to a broad average central trough across
the continent then grading to sl warmth in the far north.,
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Observed maximum
temperature anomalies for August
to October 2004. EXACT OPPOSITE of BoM model in that a warm ridge crosses
the continent E-W with cooler or more average areas in far north and SW
WA to Vic and Tas. Focus of main warmth is eastern not western as in
model, EXACTLY WRONG. Warm areas predicted in far north of model turned out
to be main COOL focus. So once again EXACTLY WRONG. |
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Minimum temperature Outlook
Map for August to October 2004 published by BoM mid
July 2004."Increased seasonal warmth for parts
of WA and SE Australia", says BoM. My comments;
Hot in west, grading to a cooler trough with axis from N WA to Tas,
then grading to warm axis through N NT, Qld to N NSW with smaller hotter
patches from S Cape York to central E Qld.
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Observed minimum temperature
anomalies for August to October
2004. GENERAL FAILURE again for the BoM. Hot predict for SW WA actually
COOLER. Cool result in far north NOT SEEN in model. Predicted broad
Qld warmth fails to show and S central warm patch not hinted at in model..
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Maximum temperature
Outlook Map for July to September 2004 published by BoM mid
June 2004."Above average temperatures more likely
in north and west for September quarter",
says BoM. Comments; Hot in west, warm in north a simple predicted gradient
to cool south east.
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Observed maximum
temperature anomalies for July
to September 2004. TOTAL FAILURE again for the poor old hapless BoM.
Actually warm in the EAST and av or coolish elsewhere.
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Minimum temperature
Outlook Map for July to September 2004 published by BoM mid
June 2004.
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Observed minimum temperature
anomalies for July to September
2004. How wrong can you be, ask WA wheatfarmers who experienced frost damage
to crops in Sept.
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Maximum
temperature Outlook Map for June to August 2004 published by
BoM mid May 2004. "Warmer winter
more likely in north and west", says BoM
Comments; Hot in west, warm in north a simple
predicted gradient to cool south east.
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Observed maximum temperature
anomalies for June to August 2004. Comments; Hot WA prediction TOTAL FAILURE. Extent of
northern warmth fails to show, northern cool patches NOT PREDICTED. Locus
of observed East Aust warmth NOT PREDICTED.
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Minimum temperature
Outlook Map for June to August 2004 published by BoM mid
May 2004. Comments; Hot WA and hot S Qld -N NSW, cooler SA, Vic, Tas.
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Observed minimum temperature
anomalies for June to August
2004. Comments; South Qld -N NSW hot prediction
TOTAL FAILURE, actually a COOL area.
WA hot prediction TOTAL FAILURE. Northern cool patches TOTAL surprise
for modellers. Central Aust warm spot and SA warmth TOTAL surprise for
modellers.
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Maximum temperature Outlook Map
for May to July 2004 published by BoM mid April 2004.
"Cooler in the southeast, warmer
in the far north.", says
the BoM.
Comments; Except for WA, a simple predicted gradient from the warm
north to cool south.
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Observed
maximum temperature anomalies for May
to July 2004. Comments; Extent of
northern warmth fails to show, S Qld coastal NSW warm peak total surprise
for modellers, northern SA cool patch not hinted at in model, N WA cool
also not forseen, Vic and Tasmania pretty good.
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Minimum temperature
Outlook Map for May to July 2004 published by BoM mid
April 2004. Comments; A warm peak south of the Kimberlies in north WA
and warm Cape York grades to a slightly cool Victoria.
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Observed minimum temperature
anomalies for May to July 2004. Comments; Extent of top end warmth fails to show. So
total failure there. Warm peak is actually around Ayres Rock, a mere
500 km away from predicted location. Peak cool anomaly in S Qld
NE NSW not hinted at in model, so more TOTAL FAILURE there. VIC to
south SA fair. Tasmania fair.
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Maximum
temperature Outlook Map for April to June 2004 published by
BoM mid March 2004. Comments; An east plunging cool trough
extends from Broome thru Brisbane, with warmth in the Top End and Southern
WA.
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Observed maximum temperature anomalies for April to June 2004.
Comments; If there is a cool axis it runs N/S from Eucla to the Kimberly's.
So total failure there. Dominant feature is warm patch in S Qld,
EXACTLY where the model predicts greatest cool, so more TOTAL FAILURE
there. SW WA patial win, VIC to south SA coastal cool v wrong. York
Peninsular exactly wrong, Tasmania wrong again. |
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Minimum temperature
Outlook Map for April to June 2004 published by BoM mid
March 2004. Comments; A cool trough extends from Broome thru Tasmania.,
with warmth on either side
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Observed minimum
temperature anomalies for April to June 2004. Dominant feature is warm centre, model
90% failed there. SW WA wrong, coastal Qld predicted warmth
failed to arrive, NE NSW cool patch totally unpredicted in model.
West Vic passable, Tasmania partial success at last.
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Maximum temperature Outlook Map for March
to May 2004 published by BoM 17, February 2004. Comments; A cool
trough extends from Broome thru Tasmania., with warmth on either
flank
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Observed maximum temperature anomalies for March to May 2004. Comments;
The cool axis is NS thru inland WA. Predicted warmth near Weipa fails
to show. Whole sense of Qld-NSW warnth was not picked in model, no
NS gradient. S Vic Ok and Tas good.
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Minimum temperature Outlook Map for March to May 2004 published by BoM 17, February 2004. Comments; Gradient from N to S in east.
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Observed minimum temperature anomalies
for March to May 2004. Comments: SA Vic OK, S WA exactly wrong, no
sign of predicted warm Cape York to Qld coast. Tas
OK. Warm high east of centre not predicted.
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Maximum temperature
Outlook Map for February to
April 2004 published by BoM 15, January 2004. Comments; there are two main features here , a warm axis extending
SE from Darwin and a cool axis extending NW from Tasmania.
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Observed
maximum temperature anomalies for February to April 2004.
Comments the warm axis is displaced about 1000 km to the SW
and the cool axis flexes through 90 degrees. Hardly a ringing
success.
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Minimum temperature Outlook Map for February
to April 2004 published by BoM 15, January 2004. Comments;
there are two main features here , a warm patch in
the top end and a cool area around western Victoria.
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Observed minimum temperature anomalies
for February to April 2004. Comments: The warm patch
in top end is displaced to centre of continent but the cool area
over western Victoria is v good.
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Maximum temperature Outlook
Map for January to March 2004 published by
BoM 16 December 2003 Comments; there are
two main features here , a warm axis extending SE from Darwin
and a cool axis extending NW from Tasmania.
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Observed maximum temperature
anomalies for January to March 2004.
Comments: The huge cool patch in NT north WA was not
forseen. The predicted warm patch in top end is displaced
to SE of continent but the cool area over southern & western
Victoria is v good.
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Minimum temperature Outlook
Map for January to March 2004 published by BoM 16, December
2003 Comments;The main feature, a warm top
end.
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Observed minimum temperature
anomalies for January to March 2004.
Comments: The warmth predicted for top end actually happened
in the centre. Top end is actually average to cool, the cool area
over western Victoria is much deeper than hinted at in the "Outlook"
which only showed a cooling gradient.
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Maximum temperature Outlook Map for December
to February 2004 published by BoM 14 November
2003 Comments;How any savvy scientific group could put out
an "outlook" like this is beyond my ken. How often has Australia
produced three monthly observations as flat as this ?
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Observed maximum
temperature anomalies for December to February 2004.
Comments: The "Outlook" prediction completely missed
the two main observed features.
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Minimum temperature Outlook Map for December
to February 2004 published by BoM 14, November 2003. Comments;
The warm top end dominates this "Outlook".
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Observed minimum temperature anomalies
for December to February 2004 . Comments: The warm patch in
top end is displaced to centre of continent and replaced
by a cool anomaly. Could any result be as wrong ? The cool in Victoria
was not hinted at in the "Outlook".
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Maximum temperature Outlook Map for November
to January 2004 published by BoM 16 October
2003 Comments;Simple pattern, warm over SE Qld, steady cooler
gradient to west.
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Observed maximum
temperature anomalies for November to January 2004. Comments: Some points
for general Qld warmth but missed Cape York, Pilbara and
and the cooler coast from west to Vic.
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Minimum temperature Outlook Map for November
to January 2004 published by BoM 16 October
2003 Comments;Simple pattern, warm over coastal N Qld to Cape
York, cooler gradient to west.
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Observed minimum
temperature anomalies for November to January 2004. Comments:
Nothing like the "Outlook" which completely missed the location
of the mild warm axis thru centre and cooler SW WA and SA-Vic.
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Maximum temperature Outlook Map for October
to December 2003 published by BoM 16 September
2003 Comments; Prominently much above average, extreme
warm over Top End and S SA-Vic.
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Observed maximum
temperature anomalies for October to December 2003 . Comments: Turned out
markedly cooler. Some marks for S WA pattern if not magnitude, ditto
central WA relatively cooler. V poor result for Eastern states.
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Minimum temperature Outlook Map for October
to December 2003 published by BoM 16 September
2003 Comments;Model on steroids, major overall warmth predicted.
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Observed minimum
temperature anomalies for October to December 2003 . Comments: No sign of
SW Qld warm patch in model, no sign of Kimberleys cool area
in model. How can they predict so warm so often and be wrong.
Yet the real world so often just oscillates nearer average
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Maximum temperature Outlook Map for September
to November 2003 published by BoM 19 August 2003.
Comments; Extreme warm over Top End and warm S SA-Vic.
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Observed maximum
temperature anomalies for September
to November 2003. Comments: Some points
for general Qld warmth but predicted Cape York extreme warmth
missed the bus. S SA and Vic exactly wrong as is Tas.
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Minimum temperature Outlook Map for September to November 2003 published by BoM 19 August
2003. Comments;Model on steroids
again, major overall warmth predicted.
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Observed minimum temperature anomalies
for September to
November 2003.
Comments: How many times does the model predict too warm overall
before they learn ? The patterns are so much at odds with prediction
that you have to ask, what is the use ?
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Maximum temperature Outlook Map for August
to October 2003 published by BoM 16 July 2003.
Comments; Prominently much above average, extreme warm over
S WA and S Qld N NSW.
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Observed maximum
temperature anomalies for August to October 2003. Comments: Huge loss of points for turning
out near average overall. Some points for general Qld
warmth. The model totally missed cooler Pilbara and the prominently
cooler coast from west to Vic. S WA NOT hot. Tas wrong
again.
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Minimum temperature Outlook Map for August to October 2003 published by BoM 16 July 2003.
Comments;Model on
steroids again, major overall warmth predicted and that dipole effect
persists.
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Observed minimum temperature anomalies
for August to October
2003. Comments:
The warm patch in Qld is not where model predicted but worth 60% for
Qld say. S WA NOT hot again ? Vic NSW cool not predicted. Tas
wrong again.
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Maximum temperature Outlook Map for July
to September 2003 published by BoM 17 June 2003.
Comments; Above average overall again, extreme warm over Top End.
East plunging cooler trough extends thru NSW.
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Observed maximum
temperature anomalies for July to September 2003. Comments: No 1, real world NOT as
overall warm as model. No 2, real world acrually has a warm RIDGE EW thru
centre while model had a TROUGH. Some points for general Qld warmth but
missed Cape York, Pilbara and and the cooler coast from west to Vic.
SW WA NOT hot, again !! Cool anomalies in south exact opposite of prediction.
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Minimum temperature Outlook Map for July to September 2003 published by BoM 17 June 2003.
Comments;Model
on steroids, again ! overall warmth predicted.
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Observed minimum temperature anomalies
for July to September
2003. Comments:
No 1, real world is much closer to average overall.
Some marks for Qld warmth . S WA NOT hot again !! S
SA , Vic, NSW all cooler than model, Tas wrong again.
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Maximum temperature Outlook Map for June to
August 2003 published by BoM 15 May 2003 Comments; Number
1, too damn warm overall. Why can
not these guys see this overestimating ???? Time after time after time.
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Observed maximum
temperature anomalies for June to
August 2003. Comments: The top end
might score 55% but the rest not worth two bob. South WA not
hot again !! Southern cooler fringe not picked in model.
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Minimum temperature Outlook Map for June to August 2003 published by BoM 15 May 2003 Comments;Once again, model on steroids, major overall warmth
predicted. The model likes these dipoles.
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Observed minimum temperature anomalies
for June to August
2003. Comments: Let's
score Qld a 75%. Southern WA not HOT againshould be a minus 35%, the
BoM would claim Tas, Vic & S SA a success and the rest
not worth mentioning it is so wrong.
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Maximum temperature Outlook Map for May to
July 2003 published by BoM 15 April 2003 Comments; The
model likes these easterley plunging troughs.
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Observed maximum
temperature anomalies for May to July 2003. Comments: How wrong can the BoM modelling be !!! But
Hey ! they got Tasmania.
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Minimum temperature Outlook Map for May to July 2003 published by BoM 15 April 2003 Comments;Once again, strong NS gradient in east.
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Observed minimum temperature anomalies
for May to July 2003. Comments: Just not good at all and Ta......
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Maximum temperature Outlook Map for April
to June 2003 published by BoM 18 March 2003. Comments; Plunging
geosynclinal structure.
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Observed maximum
temperature anomalies for April to
June 2003. Comments: About a 55%.
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Minimum temperature Outlook Map for April to June 2003 published by BoM 18 March 2003. Comments;Model on steroids too hot, trough structure planges
SSE.
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Observed minimum temperature anomalies
for April to June
2003. Comments: Maybe some
score for SE Qld but I do not see how the rest can rate. No
sign of Vic SA predict cool. Tasmania wrong again.
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Maximum temperature Outlook Map for March
to May 2003 published by BoM 18 February
2003 Comments; Synclinal structure, speaking geologically.
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Observed maximum
temperature anomalies for March to May 2003. Comments: Fair result, about a 65%.
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Minimum temperature Outlook Map for March to May 2003 published by BoM 18
February 2003 Comments; V well
defined NS gradient in east
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Observed minimum temperature anomalies
for March to
May 2003. Comments:
Apart from S WA is there any more than say 25% merit ?.
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