From: Phil Jones
To: James Hansen
Subject: Differences in our series (GISS/HadCRUT3)
Date: Tue Jan 15 13:17:19 2008
Cc: [email protected]
Jim, Gavin,
Thanks for the summary about 2007. We're saying much the same things
about recent temps, and probably when it comes to those idiots
saying global warming is stopping - in some recent RC and CA threads. Gavin
has gone to town on this with 6,7, 8 year trends etc.
What I wanted to touch base on is the issue in this figure I
got yesterday. This is more of the same. You both attribute the differences to
your extrapolation over the Arctic (as does Stefan). I've gone along with
this, but have you produced an NH series excluding the Arctic ? Do these
agree better?
I reviewed a paper from NCDC (Tom Smith et al) about issues with
recent SSTs and the greater number of buoy type data since the late-90s
(now about 70%) cf ships. The paper shows ships are very slightly warmer
cf buoys (~0.1-0.2 for all SST). I don't think they have implemented an
adjustment for this yet, but if done it would raise global T by about 0.1
for the recent few years. The paper should be out in J. Climate soon.
The HC folks are not including SST data appearing in the Arctic for regions
where their climatology (61-90) includes years which had some sea ice. I
take it you and NCDC are not including Arctic SST data where the
climatology isn't correct? You get big positive anomalies if you do.
Some day we will have to solve both these issues. Both are difficult,
especially the latter!
Cheers
Phil
To: James Hansen
Subject: Differences in our series (GISS/HadCRUT3)
Date: Tue Jan 15 13:17:19 2008
Cc: [email protected]
Jim, Gavin,
Thanks for the summary about 2007. We're saying much the same things
about recent temps, and probably when it comes to those idiots
saying global warming is stopping - in some recent RC and CA threads. Gavin
has gone to town on this with 6,7, 8 year trends etc.
What I wanted to touch base on is the issue in this figure I
got yesterday. This is more of the same. You both attribute the differences to
your extrapolation over the Arctic (as does Stefan). I've gone along with
this, but have you produced an NH series excluding the Arctic ? Do these
agree better?
I reviewed a paper from NCDC (Tom Smith et al) about issues with
recent SSTs and the greater number of buoy type data since the late-90s
(now about 70%) cf ships. The paper shows ships are very slightly warmer
cf buoys (~0.1-0.2 for all SST). I don't think they have implemented an
adjustment for this yet, but if done it would raise global T by about 0.1
for the recent few years. The paper should be out in J. Climate soon.
The HC folks are not including SST data appearing in the Arctic for regions
where their climatology (61-90) includes years which had some sea ice. I
take it you and NCDC are not including Arctic SST data where the
climatology isn't correct? You get big positive anomalies if you do.
Some day we will have to solve both these issues. Both are difficult,
especially the latter!
Cheers
Phil
Vastaukset 4
Vanhimmat
SkepeGate - Hide the heatwave:
Skepe-pellen ehkäpä idioottimaisin hörhöily: Vuonna 1998 viimeksi päivitetystä tilastosta ei löydy yhtään lämpöennätystä 2000-luvulta:
http://keskustelu.suomi24.fi/node/9142346
Skepe-pellen kyykytys:
http://keskustelu.suomi24.fi/node/8889817
-mutta mitä sanottavaa on tuosta sähkeestä?
-mutta mitä sanottavaa on tuosta skepe-pellen hörhöilystä?
From: Phil Jones
To: Tim Johns , "Folland, Chris"
Subject: Re: FW: Temperatures in 2009
Date: Mon Jan 5 16:18:24 2009
Cc: "Smith, Doug" , Tim Johns
Tim, Chris,
I hope you're not right about the lack of warming lasting
till about 2020. I'd rather hoped to see the earlier Met Office
press release with Doug's paper that said something like -
half the years to 2014 would exceed the warmest year currently on record, 1998!
Still a way to go before 2014.
I seem to be getting an email a week from skeptics saying
where's the warming gone. I know the warming is on the decadal
scale, but it would be nice to wear their smug grins away.
Cheers
Phil