Lennart Bengtsson

A draft paper discussing issues of climate sensitivity and uncertainties in the IPCC Fourth and Fifth Assessment Reports in relation to a recent paper by Otto et al. was submitted by Bengtsson and colleagues to Environmental Research Letters in February 2014, and was rejected in mid March after peer review by two referees who found that it did not meet the requirement to "significantly advance knowledge of the field". Following this, Bengtsson and his co-authors then requested the journal to publish it as a shorter "Perspective" article, but in early April the journal's editorial board turned this request down, adding that the paper contained errors and exceeded the normal size limit for "Perspective" pieces. They suggested that the errors should be corrected and a full-length paper resubmitted with a new analysis of the data. The journal said they reject 65–70 percent of papers submitted.

In 2014 Bengtsson joined the Global Warming Policy Foundation as a board member, but resigned soon after.

In 2005 he was awarded the René Descartes Prize for Collaborative Research together with Prof. Ola M. Johannessen and Dr. Leonid Bobylev from the Nansen Environmental and Remote Sensing Centre in Norway and Russia for the Climate and Environmental Change in the Arctic project. In 2006 he was awarded the 51st International Meteorological Organization Prize of the World Meteorological Organization for pioneering research in numerical weather prediction. In 2009 he was made an honorary fellow of the Royal Meteorological Society in recognition of his contribution to meteorology.

He was head of research at the European Centre for Medium-Range Weather Forecasts from 1975 to 1981 and then director until 1990; then director of the Max Planck Institute for Meteorology in Hamburg. He became a recipient of the Milutin Milankovic Medal in 1996. He is now a senior research fellow at the Environmental Systems Science Centre in the University of Reading.

Lennart Bengtsson (born (1935-07-05)5 July 1935) is a Swedish meteorologist. His research interests include climate sensitivity, extreme events, climate variability and climate predictability.