[30th August 2018]

Abstract submission is now open for the Forum on Scenarios for Climate and Societal Futures - 11th-13th March 2019, University of Denver, Denver, Colorado. The Scenarios Forum is open to anyone using, developing, or interested in scenarios to carry out research or policy analysis related to climate change and sustainability.

[13th April 2018]

New papers added to the HAPPI website. Check out the resources tab.

[17th Oct 2017]

New papers added to the HAPPI website. Check out the resources tab.

[3rd Oct 2017]

New HAPPI paper by Sophie Lewis accepted in GRL. Will be available via the GRL website soon. "Australia’s unprecedented future temperature extremes under Paris limits to warming"

[11th Sept 2017]

Issues found in the MIROC5 1.5C experiment, where the SSTs are too hot. This data should be correct in the next week or two. Issues also found in ECHAM 1.5C and 2C experiments. Stay tuned for updates on ECHAM.

[10th July 2017]

The HAPPI website ( will be unavailable between 14th - 17th of July 2017 due to the maintenance work. We will update you again soon the service comes back to normal.


[ 29th June 2017]

CAM4 data are now corrected and back on the portal.

[ 29th June 2017]

Wrong forcing discovered in the CAM5-0.25degree Historical data from 2007 onwards. Check here for updates.

[ 28th June 2017]

IPCC SR1.5 authors request that you send details of an potential impact papers to them ASAP.

[ 6th June 2017]

Wrong co2 forcing has discovered for future (1.5° and 2.0°) CAM4-2degree HAPPI runs. All other forcings including CH4, N2O, CFCs are correct, but CO2 is too low. All data in the c20c/ETH/CAM4-2degree/Plus15-Future and c20c/ETH/CAM4-2degree/Plus20-Future will be deleted from the download portal. We will rerun the simulations with high priority. Data should be available within 2-3 weeks. Please wait till the corrected data is available.

[ 15th May 2017]

 The summary of all simulations submitted to the C20C+ D&A and HAPPI Projects can be found here: 

The summary document of all simulations submitted to HAPPI (in ods format)

The summary document of all simulations submitted to HAPPI (in xls format)

The summary document of all simulations submitted to HAPPI (in pdf format)

[ 25th April 2017]
We have a very successful oversubscribed HAPPI session in EGU 2017. A EGU update steering committee meeting also held on 25th of April.
[ 30th March 2017]
HAPPI EGU Session details can be found here 
HAPPI breakout meeting details are as follows:
session SMI25
Thu, 27 Apr, 17:30–20:00 / Room 0.51

[ 30th March 2017]

HAPPI EGU session has received high media interest. Please find detials on the link here

[ 22nd March 2017]

CAM4 HAPPI Simulations completed (ETH):

The post-processing and the transfer to NERC of CAM4 simulations are now complete. You can find all the files here.

[ 17th Feb 2017]  

HAPPI session for EGU 2017 is now confirmed on the following dates:
Main Session: 24th of April, 2017 (Monday) Afternoon.
Side Meeting: 27th of April, 2017 (Thursday) Afternoon.

[ 15th Feb 2017] 

HAPPI experimental data is now accessible from the public data portal bellow:

[ 14th Feb 2017]

 The maintenance work is now completed and the storage is back online.

[ 13th Feb 2017]

 There is a major maintenance work in place in NERSC storage and the disk portion of the C20C+ D&A/HAPPI data portal continues to be offline and most likely will be available again in the middle of this week. Sorry for the inconvenience and we will update you again soon the storage is back online.

[ 8th Feb 2017]

HAPPI experimental design paper is now published. "Half a degree additional warming, prognosis and projected impacts (HAPPI): background and experimental design": avilable on:

[ 11th Jan 2017] 

Abstracts for EGU are open until the 11th of Jan. We have a session on impacts of 1.5 degrees.

[28th Sept 2016] The HAPPI data is now available in raw format for the HadAM3P, MIROC, CAM5.1-0.25 models.

[28th Sept 2016]

Papers using the HAPPI data are being proposed and collected, and lead/contributing authors proposed.

[18th July 2016] 

The first HAPPI meeting has been arranged for the 20th of September, 2016 at Oxford University. The meeting will commence from 12.30, in the Beckett Room of the School for Geography and the Environment. Please contact us if you are interested in coming. Note this coincides with the Oxford 1.5 degree conference on the following days.

[5th July 2016] 

The first GCM is running the HAPPI 1.5 degree experiments (MIROC)

[29th Jun 2016] All GCM boundary conditions are available for modelling centres for the 1.5 degree experiments.

[18th May 2016] Proposed HAPPI timeline is developed:

  1. 1st of June: All boundary condition data for the model simulations have been created.
  2. 1st of August: First model simulations are available in raw format (probably only MIROC at this stage).
  3. 1st of September: For the available models, bias corrected versions of data are available for some model variables (yet to be determined).
  4. 1st of October: Most modelling groups have finished simulations and are available for analysis.
  5. 1st of November: For the remaining models, bias corrected versions of data are available for some model variables (yet to be determined).

[17th May 2016] 

A steering committee has been elected, see the collaborations page for this list.

[11th May 2016]

The Oxford 1.5 degree conference has been announced and is set for 20th - 22nd September.

[1st May 2016]

The IPCC have officially confirmed that a Special Report on 1.5 degrees will go ahead.