Heat-trap­ping gas surges be­yond mile­stone, says UN weather agency

Malta Independent - - SCIENCE -

The World Me­te­o­ro­log­i­cal Or­ga­ni­za­tion says heat-trap­ping gases in Earth’s at­mos­phere are growing faster than be­fore, surg­ing per­ma­nently be­yond a trou­bling mile­stone.

The United Na­tions agency says global car­bon diox­ide lev­els, which first reached 400 parts per mil­lion last year, are likely to stay above that sym­bolic 400 mile­stone all year and for gen­er­a­tions to come.

Car­bon diox­ide lev­els over­all rise be­cause of the burn­ing of fos­sil fu­els and were goosed by the El Nino weather phenomenon. They also fluc­tu­ate, sea­son­ally peak­ing in May and dip­ping in Septem­ber. Last month’s av­er­age level at a key Hawaii mon­i­tor­ing sta­tion was 401 parts per mil­lion, up from 313 in 1958.

Methane and other heat-trap­ping gases are also spik­ing. The WMO is­sues its an­nual green­house gas bul­letin, us­ing pub­lic data, be­fore in­ter­na­tional cli­mate talks.

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