When the melted area reveals surfaces with lower albedo, such as grass, soil, or ocean, the effect is reversed: the darkening surface lowers albedo, increasing local temperatures, which induces more melting and thus reducing the albedo further, resulting in still more heating.
wˌɛn ðə mˈɛltᵻd ˈɛɹiə ɹᵻvˈiːlz sˈɜːfɪsᵻz wɪð lˈoʊɚɹ ælbˈiːdoʊ, sˈʌtʃ ɐz ɡɹˈæs, sˈɔɪl, ɔːɹ ˈoʊʃən, ðɪ ɪfˈɛkt ɪz ɹᵻvˈɜːst: ðə dˈɑːɹkənɪŋ sˈɜːfɪs lˈoʊɚz ælbˈiːdoʊ, ɪŋkɹˈiːsɪŋ lˈoʊkəl tˈɛmpɹɪtʃɚz, wˌɪtʃ ɪndˈuːsᵻz mˈoːɹ mˈɛltɪŋ ænd ðˈʌs ɹᵻdˈuːsɪŋ ðɪ ælbˈiːdoʊ fˈɜːðɚ, ɹɪzˈʌltɪŋ ɪn stˈɪl mˈoːɹ hˈiːɾɪŋ.