An Analysis of Tropical Cold-Point Tropopause Warming in 1999

Table 2

Explained variances of deep convection, the QBO, and upwelling associated with the BDC during three periods in the regression model.

	Prewarming	Warming	Postwarming
Deep convection		1%
QBO	0.7%
Upwelling		3%

“” denotes that the explained variances exceed the significance test at the 99% confidence level.