July 2017 Global Temperature Update To sign up for our monthly update of global temperature (Maps and Graphs), click here. Additional figures are on our global temperature web page.     The GISS global temperature analysis now uses NOAA’s newest Sea Surface Temperature version, ERSSTv5, which has improved spatial and temporal variability.  The effect on global temperature… read more

OPINION | JAMES HANSEN AND SOPHIE KIVLEHAN OK, US government — see you in court By James Hansen and Sophie Kivlehan   AUGUST 14, 2017 The Boston Globe     We are a 76-year-old grandfather and his oldest grandchild, who just graduated from high school in Pennsylvania. We are among 22 plaintiffs in a lawsuit… read more

Young People’s Burden: Requirement of Negative CO2 Emissions James Hansen, Makiko Sato, Pushker Kharecha, Karina von Schuckmann, David J. Beerling, Junji Cao, Shaun Marcott, Valerie Masson-Delmotte, Michael J. Prather, Eelco J. Rohling, Jeremy Shakun, Pete Smith, Andrew Lacis, Gary Russell, Reto Ruedy 18 July 2017 Above paper is published today in Earth System Dynamics.  There… read more

June Global Temperature Update To sign up for our monthly update of global temperature (Maps and Graphs), click here. Additional figures are on our global temperature web page.   For the half year January-June, 2017 is the second warmest, about halfway between the warmest (2016) and the 3rd warmest (2015). Global temperature dropped sharply between May and… read more

Sophie’s Op-Ed James Hansen 30 June 2017 Text of Sophie’s op-ed in the Morning Call (Eastern Pennsylvania news) is below. A few pieces of good news: (1) The paper “Young People’s Burden: Requirement of Negative CO2 Emissions” has been accepted for publication in Earth System Dynamics. We are checking the page proofs now. It will… read more

May Global Temperature Update To sign up for our monthly update of global temperature (Maps and Graphs), click here. Additional figures are on our global temperature web page. May 2017, at +0.88C relative to the 1951-1980 mean, was the second warmest Mayin the period of instrumental data, only 0.05C cooler than May 2016 record high (0.93C). ENSO (El Nino-Southern Oscillation) in the tropical Pacific are now… read more

April Global Temperature Update To sign up for our monthly update of global temperature (Maps and Graphs), click here. Additional figures are on our global temperature web page. Almost a year after the strong 2015-2016 El Nino, global mean temperature remains well above the pre-El Nino level.  Global temperature with short-term variability removed has been rising about 0.18C… read more

March Global Temperature Update To sign up for our monthly update of global temperature (Maps and Graphs), click here. Additional figures are on our global temperature web page. The first three months of 2017 are the 2nd warmest January-March in the instrumental record, about half way between 2016 (warmest) and 2015 (2nd warmest annual mean, 3rd warmest January-March). Note that most of the monthly records were… read more

Sophie Sez #3: “$1000 for You – A Better World for Your Children” YouTube Video: Summary.  Science, economics and common sense reveal a simple path to clean carbon-free energy and a bright future for young people.  “Carbon Fee & Dividend” is simple and honest, moves us to clean energy, benefitting the public and the planet. … read more

  Global temperature declined during 2016, with global temperature lagging Nino3.4 temperature by a few months (Fig. 1), as usual.  However, temperature in January and February 2017 was unusually high, Jan-Feb 2017 being the second warmest Jan-Feb (after 2016). Although the tropical SST has been in ENSO (El Nino Southern Oscillation) neutral conditions for the… read more