Play media Tashin matakin teku a duniya ya fara ne tun farkon karni na 20. Tsakanin 1900 da 2016, matakin ruwan teku a duniya ya tashi da 16-21cm (inci 6.3-8.3). Sahihin bayanan da aka tattara daga ma'aunin radar na tauraron dan adam ya nuna saurin tashi na 7.5cm (inci 3.0) daga 1993 zuwa 2017, :1554 wanda yayi kusan 30cm (inci 12) a kowane ƙarni. Wannan hanzarin ya samo asali ne sanadiyyar dumamar yanayi da mutane ke haifarwa, wanda ke haifar da fadada zafin ruwan teku da narkar da manyan kankara. Tsakanin 1993 da 2018, fadada yanayin zafi na tekuna ya ba da kashi 42% zuwa haɓakar teku; narkar da kankara mai matsakaici, 21%; Greenland, 15%; da Antarctica, 8%. Masana kimiyyar yanayi suna tsammanin matakin zai kara sauri yayin karni na 21. Bayyana matakin teku na gaba yana da kalubale,, saboda ƙwarewar fannoni da yawa na tsarin yanayi. Kamar yadda binciken yanayi game da matakan teku na da da na yanzu ke haifar da ingantattun samfuran kwamfuta, hasashe ya ci gaba da ƙaruwa.