--- - description: ~ display_name: Improved constraints on 21st-century warming derived using 160 years of temperature observations doi: 10.1029/2011GL050226 identifier: 10.1029/2011GL050226 journal_identifier: geophysical-research-letters journal_pages: 5 journal_vol: 39 notes: ~ title: Improved constraints on 21st-century warming derived using 160 years of temperature observations type: article uri: /article/10.1029/2011GL050226 url: ~ year: 2012