A Comparison of Southern Hemisphere Cyclone Track Climatology and Interannual Variability in Coarse-Gridded Reanalysis Datasets

Table 3

Differences between reanalysis datasets and their significance for SH active cyclone track region (32.5°E–42.5°W, 52.5°S–67.5°S) for (a) frequency and (b) intensity.

(a)  

Reanalysis dataset	Frequency difference	𝑡-value	2-tail 90% significant?
NCEP1_7910-NCEP2_7910	−.03	.4	N
NCEP1_7910-NCEP1_5078	−.57	5.97	Y
NCEP1_5801-ERA40_5801	.12	1.26	N

(b)  

Reanalysis dataset	MSLP difference	𝑡-value	2-tail 90% significant?
NCEP1_7910-NCEP2_7910	.25	.62	N
NCEP1_7910-NCEP1_5078	−1.97	3.06	Y
NCEP1_5801-ERA40_5801	3.9	7.46	Y