Increased nuclei concentrations lead to increased cloud droplet number concentrations, which in turn leads to increased cloud albedo, increased light scattering and radiative cooling (first indirect effect), but also leads to reduced precipitation efficiency and increased lifetime of the cloud (second indirect effect).
ɪŋkɹˈiːst nˈuːklɪi kˌɑːnsəntɹˈeɪʃənz lˈiːd tʊ ɪŋkɹˈiːst klˈaʊd dɹˈɑːplɪt nˈʌmbɚ kˌɑːnsəntɹˈeɪʃənz, wˌɪtʃ ɪn tˈɜːn lˈiːdz tʊ ɪŋkɹˈiːst klˈaʊd ælbˈiːdoʊ, ɪŋkɹˈiːst lˈaɪt skˈæɾɚɹɪŋ ænd ɹˈeɪdiətˌɪv kˈuːlɪŋ fˈɜːst ˌɪndɚɹˈɛkt ɪfˈɛkt, bˌʌt ˈɔːlsoʊ lˈiːdz tə ɹᵻdˈuːst pɹɪsˌɪpɪtˈeɪʃən ɪfˈɪʃənsi ænd ɪŋkɹˈiːst lˈaɪftaɪm ʌvðə klˈaʊd sˈɛkənd ˌɪndɚɹˈɛkt ɪfˈɛkt.