Arctic oil drilling Anadolu Agency/Getty Images

Zakažte těžký topný olej v Arktidě

LONDÝN – Před pětatřiceti lety jsme v rámci globální expedice procestovali s Charlesem Burtonem Severní ledový oceán přes severní pól, přičemž jsme tři měsíce tábořili na rychle driftující ledové kře. Tato cesta určila ráz našich dalších životů a představovala jednu část dodnes platného světového rekordu.

Další rekord, tentokrát daleko méně stabilní, však patří samotnému arktickému ledu: do března letošního roku se totiž ztenčil na historicky nejmenší doloženou velikost.

Za mizením polárního ledu stojí spalování fosilních paliv, které nejen prohlubuje globální oteplování, ale vzhledem k rozšířenému používání těžkého topného oleje (HFO) k pohonu lodí má i bezprostřednější efekt. HFO je levný a je ho dostatek, ale zároveň je jedovatý a špinavý. Když lodě proplouvají Arktidou, na ledu a sněhu se usazují znečišťující látky jako oxid siřičitý a černý uhlík. Hromadění těchto polutantů urychluje tání sněhu, což ohřívá vody v oceánu a vytváří samovolný cyklus dalšího tání.

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