Aerosol Radiative Forcing in East Asia 2013 Winter campaign

Aircraft measurements of aerosols were conducted over the Yellow Sea and East China Sea from February 14 to March 10, 2013, during the Aerosol Radiative Forcing in East Asia 2013 Winter (A-FORCE 2013W) campaign. Thirteen flights were conducted using a King Air B200T aircraft. The instruments deployed onboard the King Air B200T aircraft included an ultrafine condensation particle counter (UCPC; model 3776, TSI Inc.) (Takegawa et al., 2017); a condensation particle counter (CPC; model 3771, TSI Inc.) (Takegawa and Sakurai, 2011); an ultra-high-sensitivity aerosol spectrometer (UHSAS; DMT Inc.); a single-particle soot photometer (SP2; DMT Inc.) (Moteki et al., 2017); a cloud, aerosol, and precipitation probe (CAPS; DMT Inc.) (Koike et al., 2012); and an integrated cavity output spectroscopy for carbon monoxide (CO) (Baer et al., 2002). Ground-based measurements of aerosols were also conducted on Fukue Island (32.8N, 128.7E). The number size distribution of aerosol particles with diameters ranging from 3 to 60 nm was measured using a nano scanning mobility particle sizer (nano-SMPS), which is composed of a nano differential mobility analyzer (nano-DMA; model 3085, TSI Inc.) and a UCPC (model 3776, TSI Inc.). The chemical compositions of nonrefractory PM1 aerosols were measured using an Aerodyne aerosol chemical speciation monitor (ACSM) (Ng et al., 2011). The mixing ratios of nitrogen oxides (NOx) and sulfur dioxide (SO2) were measured using chemiluminescence and pulsed-UV fluorescence instruments, respectively. Null data are indicated as "-999".