Ragu model stuff

Ragu model stuff.

These are figures comparing results from two different versions of the Gent/Cane model, both run with annual cycle forcing. The Chen/Kessler version is a temperature-only model forced with the Seager et al (1988) scheme (see Kessler et al (1998)). The Ragu version has salinity and is forced using the Seager et al (1995) advective atmospheric boundary layer scheme.

Mean fields

  1. Equatorial mean U and T for Ragu version
  2. Equatorial mean U and T for Chen/Kessler version
  3. East Pacific mean temperature for Chen version and Ragu version
  4. East Pacific mean zonal current for Chen version and Ragu version

Annual cycles

  1. East Pacific SST annual cycle for Chen version and Ragu version
  2. Equatorial SST annual cycle for Chen version and Ragu version
  3. East Pacific SST spinup for Ragu version
  4. U at 0°,140°W for Ragu version
  5. U at 0°,140°W for Chen/Kessler version
  6. Taux on the equator for the two versions
  7. Surface elevation on the equator for the two versions
  8. Net surface fluxes on the equator for the two versions

What happens when the Chen/Kessler model is run with Ragu's forcing

  • Net solar radiation (sub qadv using different cloud fractions)
  • And the resulting SST

  • Mean solar radiation difference between the two runs
  • Mean vector wind difference between the two runs
  • Mean SST difference between the two runs
  • Mean solar radiation difference between the two runs, over the whole Pacific
  • Mean cloud difference needed to equalize the net SW difference

    --> Another comparison uses the Chen/Kessler model run with different winds, but very similar clouds.

  • Mean wind stress and speed difference
  • Resulting mean sst difference

    --> Another comparison show the equatorial SST annual cycle in three cases:
    1. Chen code. Chen forcing;
    2. Chen code. Ragu forcing;
    3. Ragu code. Ragu forcing.

  • Equatorial SST

    What happens when you vary bint or tin

    Compare the Chen/Kessler model with different bint and tin.
    Note: Exp-82 (std run) is year 10. The other two are year 2.
    1. Eq SST
    2. Eq u(1)
    3. Eq u(5)
    4. Eq h(1)
    5. Eq w(1)
    6. Eq mean u and T
    7. 140°W mean u and T

    Documenting an unusual (?) crash

    Model crashes (dumps core) at step 86119 (= Year 4, day 354, hour 3.5 (half-hour timesteps)). In this experiment I have saved snapshot fields 7 timesteps (3.5 hours) before the crash (Sorry, the plot labels say 2.5 hours). Everything appears normal. What's up?
    The plots show all fields at levels 1-7 and 9.
    1. H (layer thickness)
    2. Temperature
    3. Salinity
    4. Zonal current
    5. Meridional current
    6. Vertical current (Layers 1-8) (m/day)
    7. Q (Heat flux diagnostics)
    8. R (Salt flux diagnostics)
      Note some of these Q's and R's are different than original:
      --> Q and R as original:
      1=Net surface
      2=Entrainment
      3=Zonal Advection
      4=Meridional advection
      5=dT/dt, dS/dt
      --> New ones:
      Q6=Short wave
      Q7=Sensible
      R6=Latent HF
      R7=Sensible HF
      R8=Cloud fraction
      Panel Q8 shows the surface pressure.
  • Page for showing a bunch of incomprehensible things
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