To limit the number of small files, add scalar variables outputs in histmth.

[mafoipsl]

Currently, scalar variables output like : co2_ppm, CH4_ppb, N2O_ppb, ... are stored in a very small file : paramLMDZ_phy. To reduce the number of small files, use histmth instead of paramLMDZ_phy.

Size of the file : 37K

Variables included :
ncdump -h ..._paramLMDZ_phy.nc |grep -i float

float lon(lon) ;
float lat(lat) ;
float R_ecc(time_counter, lat, lon) ;
float R_peri(time_counter, lat, lon) ;
float R_incl(time_counter, lat, lon) ;
float solaire(time_counter, lat, lon) ;
float rsun1(time_counter, lat, lon) ;
float rsun2(time_counter, lat, lon) ;
float rsun3(time_counter, lat, lon) ;
float rsun4(time_counter, lat, lon) ;
float rsun5(time_counter, lat, lon) ;
float rsun6(time_counter, lat, lon) ;
float co2_ppm(time_counter, lat, lon) ;
float CH4_ppb(time_counter, lat, lon) ;
float N2O_ppb(time_counter, lat, lon) ;
float CFC11_ppt(time_counter, lat, lon) ;
float CFC12_ppt(time_counter, lat, lon) ;

[mafoipsl]

Done for IPSLCM6.0.8.