From ee0239d2ce0a10814a15b58e12194b3a76a1abd0 Mon Sep 17 00:00:00 2001 From: patrickscholz Date: Thu, 20 Nov 2025 11:58:02 +0100 Subject: [PATCH] Modify EVP settings for improved stability Updated EVP solver type and stability constants for mEVP. change back to whichEVP=1 (mEVP) and adapt alpha, beta parameters accordingly --- config/namelist.ice | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/config/namelist.ice b/config/namelist.ice index 8b29ce4bf..158c8a221 100644 --- a/config/namelist.ice +++ b/config/namelist.ice @@ -14,7 +14,7 @@ ! ============================================================================ &ice_dyn ! --- EVP Rheology Options --- -whichEVP = 0 ! EVP solver type: +whichEVP = 1 ! EVP solver type: ! 0 = standard EVP ! 1 = modified EVP (mEVP) ! 2 = adaptive EVP (aEVP) @@ -31,8 +31,8 @@ delta_min = 1.0e-11 ! minimum strain rate for viscosity regularizati evp_rheol_steps = 120 ! number of EVP subcycles per ice time step ! --- mEVP Stability Parameters (for whichEVP=1) --- -alpha_evp = 250 ! mEVP stability constant (adjust with resolution) -beta_evp = 250 ! mEVP stability constant (adjust with resolution) +alpha_evp = 500 ! mEVP stability constant (adjust with resolution) +beta_evp = 500 ! mEVP stability constant (adjust with resolution) ! --- aEVP Tuning (for whichEVP=2) --- c_aevp = 0.15 ! aEVP tuning constant (adjust with resolution)