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Climate Diagnostics Bulletin
Climate Diagnostics Bulletin - Home Climate Diagnostics Bulletin - Tropics Climate Diagnostics Bulletin - Forecast

 

  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

Table of Teleconnection Indices

JANUARY 2020

MONTH NAO EA WP EP-NP PNA TNH EATL/WRUS SCAND POLEUR
JAN 20 1.1 1.7 0.7 -0.6 -1.0 -0.9 0.7 -0.5 0.2
DEC 19 1.0 0.8 0.7 --- -0.1 -0.2 0.1 0.8 -0.4
NOV 19 0.2 0.1 -0.1 1.9 -0.1 --- -0.6 1.5 1.0
OCT 19 -1.0 0.7 -0.8 -0.5 -1.0 --- -0.5 0.2 -0.2
SEP 19 0.0 2.2 0.9 -1.5 1.6 --- 0.8 -0.5 -0.1
AUG 19 -1.6 1.9 -2.2 -1.2 1.2 --- -1.7 -2.1 0.3
JUL 19 -1.4 0.1 -0.3 0.1 0.6 --- 1.0 -0.7 -1.5
JUN 19 -0.8 1.3 -1.9 1.7 0.2 --- 0.3 -0.2 -0.5
MAY 19 -2.4 -0.6 -0.6 0.3 -0.2 --- -0.7 -0.1 -0.8
APR 19 0.4 -1.0 -1.3 0.7 -0.8 --- 0.8 2.1 -0.4
MAR 19 0.9 0.9 0.9 2.1 -0.1 --- -1.1 -0.9 0.9
FEB 19 -0.1 -0.1 2.1 1.2 -1.7 1.6 0.5 -0.4 0.7
JAN 19 0.2 -1.7 1.0 1.1 0.4 0.3 0.7 -0.1 0.1

TABLE E1.  Standardized amplitudes of selected Northern Hemisphere teleconnection patterns for the most recent thirteen months (computational procedures are described in Fig. E7). Pattern names and abbreviations are North Atlantic Oscillation (NAO); East Atlantic pattern (EA); West Pacific pattern (WP); East-Pacific - North Pacific pattern (EP-NP); Pacific/North American pattern (PNA); Tropical/Northern Hemisphere pattern (TNH); East Atlantic/Western Russia pattern (EATL/WRUS-called Eurasia-2 pattern by Barnston and Livezey, 1987, Mon. Wea. Rev., 115, 1083-1126); Scandanavia pattern (SCAND-called Eurasia-1 pattern by Barnston and Livezey 1987); and Polar Eurasia pattern (POLEUR). No value is plotted for calendar months in which the pattern does not appear as a leading mode.


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