Changeset 4853 for LMDZ6/trunk/libf/phylmd/ecrad/CHANGELOG

Timestamp:

Mar 19, 2024, 3:34:21 PM (2 months ago)

Author:

idelkadi

Message:

Ecrad update in LMDZ / Implementation of Ecrad double call in LMDZ

• version 1.6.1 (commit 210d7911380f53a788c3cad73b3cf9b4e022ef87)
• interface routines between lmdz and ecrad grouped in a new "lmdz" directory
• double call method redesigned so as to go through the Ecrad initialization and configuration part only once for the entire simulation
• clean-up in the read.F routine: delete unitules arguments
• modification of default gas model in namelist (default: ECCKD)

File:

• LMDZ6/trunk/libf/phylmd/ecrad/CHANGELOG (modified) (1 diff)

LMDZ6/trunk/libf/phylmd/ecrad/CHANGELOG

@@ -15 +15 @@
         - Increased security value in single-precision SW
           reflectance-transmittance calculation from 1e-12 to 1e-6
+        - Added radiation/ecrad_config.h file to provide site-specific
+          optimization options as preprocessor parameters
+        - Replaced slow "sum" intrinsic function in McICA and Tripleclouds
+          solvers with optimized versions for x86-64 and DWD's NEC
+        - Enable different gas optics models for shortwave and longwave:
+          namelist gas_model_name can still be used, or use
+          sw_gas_model_name and lw_gas_model_name to specify separate models
+        - Fix the general aerosol optics + RRTMG combination, so that
+          optical properties correctly weighted by solar or terrestrial
+          Planck function, rather than unweighted. This changes fluxes by up
+          to 0.3 W m-2 in SW and 0.03 in LW, heating rates by up to 0.015
+          K/d in SW and 0.0015 in LW. Reverts bug introduced between git
+          commits a405cca (5 Dec 2022) and 7182230 (8 Dec 2022).
+        - Added ifs/satur.F90, used in the IFS to compute relative
+          humidity for aerosol hydration, and the ability to call it from
+          ecrad_driver.F90, but note that this routine computes saturation
+          with respect to ice at colder temperatures. If used, the impact on
+          fluxes is up to around 1 W m-2 in the SW and 0.05 in the LW, and
+          for heating rates 0.002 K/d in the SW and 0.003 in the LW.
 
 version 1.6.0 (27 April 2023)