Statistical Analysis of Relationship between Daytime Lidar-Derived Planetary Boundary Layer Height and Relevant Atmospheric Variables in the Semiarid Region in Northwest China

Table 3

Statistical correlations between different atmospheric variables and PBLH with a delay of 1–4 hours (: surface air temperature; : surface temperature; H: sensible heat flux; RH: surface relative humidity; P: atmospheric pressure; , , , and : upward long wave and short wave radiation and downward long wave and short wave radiation, respectively; : net radiation; r: Pearson correlation coefficient).

Variables	At the same time	PBLH 1 h later	PBLH 2 h later	PBLH 3 h later	PBLH 4 h later
	r	r	r	r	r
H
RH
P

Significant correlation at the 0.01 significance level.