1. Allen R. J. S. C. Sherwood J. R. Norris and C. S. Zender (2012) Recent Northern Hemisphere tropical expansion
2. 1943 primarily driven by black carbon and tropospheric ozone Nature 485(7398) 350-354 doi:10.1038/nature11097.
3. 1944 Ammann C. M. G. A. Meehl W. M. Washington and C. S. Zender (2003) A monthly and latitudinally varying
4. 1945 volcanic forcing dataset in simulations of 20th century climate Geophysical Research Letters 30(12) n/a-n/a
5. 1946 doi:10.1029/2003GL016875.