 This study presents a new global baseline of mangrove extent for 2010 and has been released, as the first output of the global mangrove watch, GMW initiative. This is the first study to apply a globally consistent and automated method for mapping mangroves, identifying a global extent of 137,600 square kilometers with an overall accuracy of 94%. Asia has the highest proportion of mangroves at 38.7%, followed by Latin America and the Caribbean at 20.3%, Africa at 20%, Oceania at 11.9%, North America at 8.4%, and the European Overseas Territories at 0.7%. The methodology developed is primarily based on the classification of allos pulsar and Landsat sensor data, where a habitat mask was first generated, within which the classification of mangrove was undertaken using the extremely randomized trees classifier. This new globally consistent baseline will also form the basis of a mangrove monitoring system using JAXA-JERS, 1SAR, allos pulsar and allos 2PALs. This article was authored by Pete Bunting, Acrosenqvist, Richard M. Lucas and others. We are article.tv, links in the description below.