Aerosols (very fine particles/droplets in the atmosphere) have both direct and indirect effects on Earth's radiative balance.
ˈɛɹəsˌɑːlz vˈɛɹi fˈaɪn pˈɑːɹɾɪkəlz slˈæʃ dɹˈɑːplɪts ɪnðɪ ˈætməsfˌɪɹ hæv bˈoʊθ dᵻɹˈɛkt ænd ˌɪndɚɹˈɛkt ɪfˈɛkts ˌɔn ˈɜːθz ɹˈeɪdiətˌɪv bˈæləns.