Cryoconite, powdery windblown dust containing soot, sometimes reduces albedo on glaciers and ice sheets.
kɹˈaɪəkˌɑːnaɪt, pˈaʊdɚɹi wˈɪndbloʊn dˈʌst kəntˈeɪnɪŋ sˈʊt, sˈʌmtaɪmz ɹᵻdˈuːsᵻz ælbˈiːdoʊ ˌɔn ɡlˈeɪʃɚz ænd ˈaɪs ʃˈiːts.