Also published at Skeptical Science This is a climate model: T = [(1-α)S/(4εσ)]1/4 (T is temperature, α is the albedo, S is the incoming solar radiation, ε is the emissivity, and σ is the Stefan-Boltzmann constant) An extremely simplified climate model, that is. It’s one line long, and is at the heart of every computer [...]
Posts Tagged ‘cesm’
How do climate models work?
Posted in Science Lessons, tagged arctic, atmosphere, cesm, chemistry, climate change, climate models, education, global warming, IPSL, mathematics, NOAA, ocean, physics, programming, science on January 20, 2012 | 29 Comments »
MPI Problem?
Posted in Research Blogging, tagged cesm, climate change, gcc, global warming, mpi, ncar, programming, science, segfault, ubuntu on August 16, 2011 | 7 Comments »
Now that my poster is finished, I am taking one last crack at getting CESM to run. Last time I wrote, I mentioned that the model execution was failing without giving any error messages (except the occasional “Segmentation fault”). Michael Tobis thought that the problem had to do with mpiexec, so today I tried something [...]
Wrapping Up
Posted in Research Blogging, tagged science, climate change, global warming, climate models, education, ncar, met office, cesm, model E, gfdl, max planck, IPSL, UVic, hadley, nasa giss, cosmos on August 16, 2011 | 10 Comments »
My summer job as a research student of Steve Easterbrook is nearing an end. All of a sudden, I only have a few days left, and the weather is (thankfully) cooling down as autumn approaches. It feels like just a few weeks ago that this summer was beginning! Over the past three months, I examined [...]
Progress?
Posted in Research Blogging, tagged cesm, climate change, global warming, linux, mpich2, ncar, programming, qsub, segfault, torque, ubuntu on July 13, 2011 | 3 Comments »
I have made slight headway regarding my installation of CESM. It still isn’t running, but now it’s not running for a different reason than previously! Progress! It appears that, at some point while porting, I mangled the scripts/ccsm_utils/Machines/mkbatch.kate file for my machine such that the actual call to launch the model wasn’t getting copied from [...]
Modularity
Posted in Research Blogging, tagged cesm, climate change, climate models, global warming, hadley, met office, model E, MOM, nasa, ncar, NEMO, OASIS, science, UVic on July 13, 2011 | 10 Comments »
I’ve now taken a look at the code and structure of four different climate models: Model E, CESM, UVic ESCM, and the Met Office Unified Model (which contains all the Hadley models). I’m noticing all sorts of similarities and differences, many of which I didn’t expect. For example, I didn’t anticipate any overlap in climate [...]
Working Away
Posted in Research Blogging, tagged cesm, climate change, gfdl, global warming, gnu, hadley centre, IPSL, max planck, model E, nasa, ncar, programming, science, ubuntu, uvic escm on June 27, 2011 | 8 Comments »
The shape of my summer research is slowly becoming clearer. Basically, I’ll be writing a document comparing the architecture of different climate models. This, of course, involves getting access to the source code. Building on Steve’s list, here are my experiences: NCAR, Community Earth System Model (CESM): Password-protected, but you can get access within an [...]
Climate Models on Ubuntu
Posted in Research Blogging, tagged cesm, climate change, climate models, fortran, gcc, global warming, gnu, linux, model E, nasa, ncar, programming, ubuntu on June 16, 2011 | 9 Comments »
Part 1: Model E I felt a bit over my head attempting to port CESM, so I asked a grad student, who had done his Master’s on climate modelling, for help. He looked at the documentation, scratched his head, and suggested I start with NASA’s Model E instead, because it was easier to install. And [...]
Models and Books
Posted in Research Blogging, tagged archer, broecker, cesm, climate change, climate models, edgcm, edwards, fourier, global warming, hansen, linux, pierrehumbert, thunderstorms, windows 7 on June 9, 2011 | 15 Comments »
Working as a summer student continues to be rewarding. I get to spend all day reading interesting things and playing with scientific software. What a great deal! Over the weekend, I ran the “Global Warming_01″ simulation from EdGCM, which is an old climate model from NASA with a graphical user interface. Strangely, they don’t support Linux, [...]
Learning Experiences
Posted in Research Blogging, tagged aerosols, cesm, chemistry, climate change, easterbrook, education, global warming, ncar, physics, programming, science on May 31, 2011 | 13 Comments »
I apologize for my brief hiatus – it’s been almost two weeks since I’ve posted. I have been very busy recently, but for a very exciting reason: I got a job as a summer student of Dr. Steve Easterbrook! You can read more about Steve and his research on his faculty page and blog. This [...]
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