When sea ice melts, either due to a rise in sea temperature or in response to increased solar radiation from above, the snow-covered surface is reduced, and more surface of sea water is exposed, so the rate of energy absorption increases.
wˌɛn sˈiː ˈaɪs mˈɛlts, ˈiːðɚ dˈuː tʊ ɐ ɹˈaɪz ɪn sˈiː tˈɛmpɹɪtʃɚ ɔːɹ ɪn ɹᵻspˈɑːns tʊ ɪŋkɹˈiːst sˈoʊlɚ ɹˌeɪdɪˈeɪʃən fɹʌm əbˈʌv, ðə snˈoʊkˈʌvɚd sˈɜːfɪs ɪz ɹᵻdˈuːst, ænd mˈoːɹ sˈɜːfɪs ʌv sˈiː wˈɔːɾɚɹ ɪz ɛkspˈoʊzd, sˌoʊ ðə ɹˈeɪt ʌv ˈɛnɚdʒi ɐbsˈoːɹpʃən ˈɪŋkɹiːsᵻz.