Extratropical Highlights

  Table of Indices  (Table 3)

  Global Surface Temperature  E1

  Temperature Anomalies (Land Only)  E2

  Global Precipitation  E3

  Regional Precip Estimates (a)  E4

  Regional Precip Estimates (b)  E5

  U.S. Precipitation  E6

  Northern Hemisphere

  Southern Hemisphere

  Stratosphere

  Appendix 2: Additional Figures

• Artic Oscillation  A2.1
  
• Snow Cover  A2.2
  

APRIL 2012

FIGURE A2.2.  SSM/I derived snow cover frequency (%) (left) and snow cover anomaly (%) (right). Based on 1987-2010 base period for the Northern Hemisphere (top) and Southern Hemisphere (bottom). It is generated using the algorithm described by Ferraro et al, 1996, Bull. Amer. Meteor. Soc., vol 77, 891-905.