diff --git a/da/cosmo/observationoperator_octe.py b/da/cosmo/observationoperator_octe.py
index 1a9dbb83ce4a7a4b953346d2b3d383d6008fccdb..4b1740a1d0cbc9a87f1facc67beac58576012a63 100755
--- a/da/cosmo/observationoperator_octe.py
+++ b/da/cosmo/observationoperator_octe.py
@@ -184,7 +184,8 @@ class ObservationOperator(object):
 
         for dt in rrule.rrule(rrule.HOURLY, dtstart=to_datetime(dacycle['abs.time.start'])+timedelta(hours=hstart), until=to_datetime(dacycle['abs.time.start'])+timedelta(hours=hstop)):
             dt=dt.strftime('%Y%m%d%H')
-            logging.info('Extracting output for ens %s, time %s' % (str(ens),str(dt)))
+            if ens == "001":
+                logging.info('Extracting output for time %s' % (str(dt)))
             co2_in_fn = cosmo_out+'lffd'+dt+'.nc'
             co2_out_jfj = cosmo_out+'CO2_jfj_'+ens+'_'+dt+'.nc'
             co2_out_lhw = cosmo_out+'CO2_lhw_'+ens+'_'+dt+'.nc'