Paul Lachine

La era del calor

BERLÍN – Este abril fue el abril más caluroso del que se tenga cuenta, a nivel global, en por lo menos 130 años, según los registros de temperaturas mundiales que lleva la NASA y la Administración Nacional Oceánica y Atmosférica de Estados Unidos (NOAA, por su sigla en inglés). El último año constituyó el período de 12 meses más caluroso desde que se dio inicio a las mediciones.

Eso es lo que demuestran los datos de las estaciones y los barcos meteorológicos. Pero si prefieren los datos satelitales, el panorama es similar. Los datos satelitales dicen que este marzo es el marzo más caluroso de la historia, mientras que abril es el segundo más caluroso; los datos de la superficie son exactamente inversos: marzo fue el segundo mes más caluroso después de abril.

Por supuesto, más importante aún desde un punto de vista científico son las tendencias a largo plazo. En los últimos 30 años –hasta ahí se remontan las mediciones satelitales-, la tendencia es claramente ascendente y similar en magnitud en todos los grupos de datos disponibles.

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