Comparison between nonNEMS GFS and NEMS GFS Adiabatic
Comparison between non-NEMS GFS and NEMS GFS – Adiabatic Experiments Fanglin Yang GCWMB Bi-Weekly Meeting Oct 29, 2015 http: //www. emc. ncep. noaa. gov/gmb/wx 24 fy/misc/nems/
• Trunk version NEMS r 63310 (including trunk GSM) is used, which contains Moorthi’s latest update. • Initial conditions for 2015072900 cycle in sigio format from current branch parallel pr 4 devb (non. NEMS) converted to nemsio format using CHGRES. • A few forecast experiments with and without physics are conducted.
NEMS GFS? Adiabatic ? IC format K 2 O Ref_pres (db) Devb NO NO Sigio 32 80 devba NO YES sigio 32 80 nemsg YES NO nemsio 0 101. 35 nemsga YES Nemsio 0 101. 35 Nemsh YES NO Nemsio 32 80 Nemsga 2 YES layer for divergence YES Sigio K 2 O is starting damping 32 80 nemsga 3 32 80 YES nemsio
NEMS GFS? Adiabatic ? IC format K 2 O Ref_pres (db) Devb NO NO Sigio 32 80 devba NO YES sigio 32 80 nemsg YES NO nemsio 0 101. 35 nemsga YES Nemsio 0 101. 35 Nemsh YES NO Nemsio 32 80 Nemsga 2 YES Sigio 32 80 nemsga 3 YES nemsio 32 80 K 2 O is starting layer for divergence damping
NEMS GFS? Adiabatic ? IC format K 2 O Ref_pres (db) Devb NO NO Sigio 32 80 devba NO YES sigio 32 80 nemsg YES NO nemsio 0 101. 35 nemsga YES Nemsio 0 101. 35 Nemsh YES NO Nemsio 32 80 Nemsga 2 YES Sigio 32 80 nemsga 3 YES nemsio 32 80
cold temperature near surface in adiabatic runs Zoom into Hawaii
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