首页|Comments on "Seasonal Variation of the Physical Properties of Marine BoundaryLayer Clouds off the California Coast"
Comments on "Seasonal Variation of the Physical Properties of Marine BoundaryLayer Clouds off the California Coast"
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NSTL
Amer Meteorological Soc
By combining data from multiple sources, Lin et al.(2009, hereafter L09) have lately performed a rathercomprehensive comparison of the seasonal differencesin several macrophysical properties of marine boundarylayer (MBL) clouds observed off the California coast[e.g., cloud fraction, liquid water path (LWP), cloud-topand cloud-base heights, cloud thickness H, inversionstrength, lifted condensation level, and the degree ofdecoupling]. They found that most differences betweenthe summer [June–August (JJA)] and winter [December–February (DJF)] seasons can be explained by the characteristicsof lower-tropospheric stability (LTS; Slingo1980; Klein 1997) and the deepening–warming–decouplinghypothesis proposed in Bretherton and Wyant (1997). Althoughthis work certainly constitutes an excellent contributionto the understanding and parameterization ofMBL clouds by considering multiple variables together,it is primarily confined to macrophysical properties, onlywith a brief mentioning of the cloud droplet effectiveradius. In this paper, I will demonstrate that crediblemicrophysical information can, in fact, be inferred fromthe same datasets provided in L09, which further suggestsat least equally strong summer–winter differencesin microphysical properties and a plausible microphysicaleffect.
NSTL
Amer Meteorological Soc
