Changes between Version 55 and Version 56 of ArchiveReport

Timestamp:

Jun 21, 2021, 10:37:49 AM (4 years ago)

Author:

cmathe

Comment:

--

ArchiveReport

@@ -1 +1 @@
 = Archive of POULDP reports =
+
+'''17^th^ June 2021'''
+{{{
+Duration:1h30mn
+
+Participants: Antony, Ehouarn, Siteng, Christophe, Francois, Joseph, Adrien, Lucas, Margaux,
+              Romain, Thomas, Loic
+
+News:
+====
+- TGO SWT#23 next week (Wednesday-Thursday), ask Francois if you want to attend.
+
+Recent commits: https://trac.lmd.jussieu.fr/Planeto/log
+==============
+- None
+
+Recent tickets: https://trac.lmd.jussieu.fr/Planeto/report/1
+==============
+- #78: add some checking the validity of input fields coming from the dynamics
+      at the beginning of the physics. => Ehouarn
+
+Hot topics:
+===========
+
+* Time keeping in the start files
+- Roland reports some problems when storing multiple time steps in restart/restartfi:
+  I ran the GCM from sol 422 h 02 to sol 422 h 04, saving the start dump every hour.
+  startfi.nc has day_ini = 422, hour_ini = 0, and Time = 0.083333 (=2h)
+  start.nc is the same. OK I think.
+  After running for two hours,
+  restartfi.nc has day_ini = 422, hour_ini = 0.0833333, and Time = [0.04166667 0.08333333 0.125     ]
+  restart.nc has day_ini = 422, hour_ini = 0, and Time = [0.04166667 0.08333333 0.125     ]
+- we should probably just get rid of hour_ini altogether? => Romain
+
+* Dynamico
+- Crazy behaviour if optim -O3 or -O2 ... (-O1 seems to work)
+- strange unphysical patches of surface temperature in test run (seems to depend on physics call frequency)
+  => check again in debug?
+
+Christophe:
+- "solved" his problem (crash at month#9) re-running the code (updated version)
+  => move on to iphysiq=5 (instead of iphysiq=10)
+- convergence of results over 8 years of simulations with CO2 clouds, looking at the last 3 years
+
+Margaux:
+- Simulations with the "old" (32 level + iphysiq=10) model with HDO, move on to "new" (54 levels+iphysiq=5)
+  or not?
+
+Joseph:
+- Water cycle tuning: influence of the contact parameter => temperature-dependent parameter
+  Anni recommends the tanh() formulation rather than linear dependence
+  But for now results are not better...
+- Wonders about the possibility of having long term evolution of the aldebo of the long-term water cap
+  (when frost becomes perennial cap)
+
+Antoine:
+- IR-vis opacty conversion coefficient computed online => ranges from 0.1-8 ! (instead of 2.6)
+  Better (colder) temperatures (compared to MCS) but still not cold enough...
+- looks at the brightness of dust in the visible (test with higher +1% omegaVIS wrt reference)
+  => perhaps to test with constant dust ?
+}}}
+
+
+'''10^th^ June 2021'''
+{{{
+
+Duration: 1h25mn
+
+Participants: Francois, Christophe, Siteng, Thomas, Ehouarn, Margaux, Lucas, Romain, Antoine, Antony
+              Joseph
+
+News:
+====
+- EnVision!
+- MAMO dates: June 14-17 2022 (confirmed); ice-breaker on Monday 13 evening in Zamansky tower.
+- Jiandong Liu will come to LMD on september 1st 2021 (1 year postdoc)
+
+Recent commits: https://trac.lmd.jussieu.fr/Planeto/log
+==============
+- 2530: re-commit of r2526 for testphys1d
+- 2531: fix bug in vdifc that was introduced in r2515
+- 2532-33: newstart2icosa update
+
+Recent tickets: https://trac.lmd.jussieu.fr/Planeto/report/1
+==============
+- None
+=> make a ticket about checking the validity of input fields coming from the dynamics
+   at the beginning of the physics.
+
+Hot topics:
+===========
+
+* Crash with unexpected unrealistic HDO ratio: (Jean-Yves, Margaux, Ehouarn)
+HDO_ice ratio of 4000 from the dynamics
+Problem identified (with isotopes) to comes from the dynamics.
+To be continued...
+
+* 1=1 : (seq == parallel)
+- Now OK, as of rev 2531
+
+Christophe:
+- some crashes with negative geopotential when entering physics (after 6 years of simulation).
+- nighttime CO2 clouds occur ~lon=-45 lat=0, but not when removing topography and diurnal cycles
+
+Romain:
+- comparing Dynamico & LMDZ with water/dust/co2 cycles on. => strangely the initial
+  conditions mismatch
+- dissipation fac_up =30 needed for dynamico whilst =10 works for LMDZ
+
+Margaux:
+- small study on the MY34 dust storm simulations, compared to MCS.
+  vertical dust distribution => does not go high enough compared
+  to observations (worsen by the microphysics), so tried injecting
+  more dust in altitude to try to match MCS, but doesn't go the right
+  way in 3D.
+- option to try: use prescribed (Conrath) profile with microphysics
+
+Antoine:
+- conversion coeff from IRAbs to VisibleExtinction is usually taken to 2.6 inthe GCM.
+  investigates other values (3.4 ==> 1 um dust, or 1.8 ==> 2 um dust)
+  Significant effect on the temperatures ~10K; depending on the season
+  Is running computations where the coeff is computed online based on
+  GCM column opacities vs dust scenarios columns
+- will do a sensitivity study on the brightness of the dust (omega)
+
+Joseph:
+- impact of temperature-dependent contact parameter: not much impact on the saturation
+  => better water cycle, closer to observations, thins the polar hood.
+- tested linear temperature dependence, but will check with hyperbolic formulation.
+
+Thomas:
+- compared Insight opacity and dust scenarios (updated to lastest versions);
+  the decrease after the stormsis steeper in the scenarios than observed.
+  And overall observed opacities are much higher than in the scenario most of the time.
+}}}
+
+
+'''3^rd^ June 2021'''
+{{{
+Duration:1h20mn
+
+Participants: Ehouarn, Joseph, Christophe, Siteng, Antoine, Romain, Lucas, Thomas, Francois, Margaux
+              Loic, Sandrine
+News:
+====
+- selection of VERTIAS and Da-VINCI+ ; Venus rules!
+
+Recent commits: https://trac.lmd.jussieu.fr/Planeto/log
+==============
+- None
+
+Recent tickets: https://trac.lmd.jussieu.fr/Planeto/report/1
+==============
+- None
+
+Hot topics:
+===========
+
+* Crash with unexpected unrealistic HDO ratio: (Jean-Yves, Margaux, Ehouarn)
+HDO_ice ratio of 4000 from the dynamics
+Problem identified (with isotopes) to comes from the dynamics.
+To be continued...
+
+* 1=1 : (seq == parallel)
+- doesn't work with r2519 , but was OK with r2511 (Ehouarn)
+
+Romain:
+- Dynamico: added tab-control in the XIOS outputs + adapted concatnc , zrecast & localtime
+            => to be committed
+
+Siteng:
+- TIRVIM retrievals  good between 5Pa and 200Pa
+
+Antoine:
+- registered to IDRIS MPI & OpenMP trainings (september - october)
+- dust scaling story: "dustradadjust" & tau_GCM reaches huge values locally
+  dustradadjustis computed at 14LT and evolves linearly
+  and at some locations tau_GCM changes by orders of magnitude over a day in the
+  polar region where extreme values are obtained
+  Also find the (lesser) problem in the tropics on the volcanoes
+  => importance of topflows on volcanoes
+  Tests with an upper limit of 5 for dustradadjust
+
+Margaux:
+- will have an intern work on HDO observable simulator of ACS or plain GCM/observations
+  comparison (as follow up to Loic's current work), or some "tagging" of water
+
+Joseph:
+- writing paper on present day water cycle. Temperature dependent contact parameter
+  improves things; will  look at how this changes saturation profiles.
+
+Thomas:
+- slope winds in the MCD: comparisons with mesoscale work on the full wind
+  or on the anomaly?
+
+Christophe:
+- works on improvedco2cloud routine to separate meteoritic dust from the rest
+
+Ehouarn:
+- 1=1 ?
+- News from Chao Wang : has implemented the dust lifting (Mulholland) scheme
+}}}
+
+
+
+'''27^th^ May 2021'''
+{{{
+Duration: 1h
+
+Participants: Joseph, Francois, Siteng, Thomas, Romain, Margaux, Antoine, Lucas, Aymeric, Christophe, Antony
+
+News:
+====
+MAMO workshop now tentatively planned on June 14-17. Francois is waiting for confirmation from Sorbone University for the Auditorium.
+
+Recent commits: https://trac.lmd.jussieu.fr/Planeto/log
+==============
+@2525  abierjon Mars GCM: Make a cleaner initialization of some variables in some logial variables in MCS simulator
+
+@2526  mvals     Mars GCM: testphys1d.F: Fix for the 1D, follow up from previous modifications of phys_state_var_init subroutine.
+
+@2527  jnaar     Bug correction in the 1d GCM, not compiling because of the of the "phys_state_var_init" routine
+
+@2528  cmathe     MARS: update zrecast utility
+
+Recent tickets: https://trac.lmd.jussieu.fr/Planeto/report/1
+==============
+- None
+
+Ongoing discussions:
+===================
+
+- Antoine: Fix erroneous dust opacities appearing in the southern polar night when using "dustradadjust". These opacities follow the baroclinic waves structure. Suggestion : work at the fortran code level from a appropriate start files, output with write(*,*) when and where there is the bug, end with "STOP" and try again and again...
+
+- Thomas : Slope winds. Struggle with the coriolis forces. Need to remove the sensitivity of friction to stability (Richardson). The fit is not yet perfect but not bad. Francois suggests to use anomaly (diurnal mean ave - instantaneous) even for the computed slope winds for comparison
+
+- Siteng : analysis of the role or a priori in the TIRVIM inversion and comparison with GCM
+
+- Antony and Romain : fixed the problems with tracers in Dynamico - Mars. Soon will do realistic Mars simulations ! Work on XIOS output
+
+- Antony : test on the effect of the dissipation on warming early Mars.
+
+- Margaux Vals : new results on D/H cycle and the model. 2 papers in preparation...
+
+- Christophe : Find a sensitivity of mesospheric CO2 ice clouds to dust scenario (MY28 vs clim scenario). See CO2 clouds in the afternoon at last!
+}}}
+