Middle Miocene Volcanism, Carbon Dioxide and Climate Change

Guest geology lesson by David Middleton What’s wrong with the following paragraph? In Late Jurassic-Early Cretaceous times, Gondwana was split apart, and as rift volcanism and sea-floor spreading developed, ocean temperatures rose and ocean waters were enriched with nutrient elements from volcanic outpourings (along mid-ocean ridges and continental margins or island arcs). Oxygen-isotope analyses of…

Advertisements

France will 'ban all petrol and diesel vehicles by 2040'

Environment minister unveils five-year-plan to fulfil country’s commitments under Paris Agreement Chloe Farand from the UK Independent France plans to ban all petrol and diesel vehicles by 2040, the country’s new environment minister has announced. Nicolas Hulot made the announcement as he unveiled a series of measures as part of newly elected President Emmanuel Macron’s…

How well did Hansen (1988) do?

Guest Post by Ira Glickstein. The graphic from RealClimate asks “How well did Hansen et al (1988) do?” They compare actual temperature measurements through 2012 (GISTEMP and HadCRUT4) with Hansen’s 1988 Scenarios “A”, “B”, and “C”. The answer (see my annotations) is “Are you kidding?” HANSEN’S SCENARIOS The three scenarios and their predictions are defined…