Methodology to Forecast Road Surface Temperature with Principal Components Analysis and Partial Least-Square Regression: Application to an Urban Configuration

Table 1

List of variables used for PLS calculations.

Sample date	RST; (°C)	Measurement time; (a.m./p.m.)	Traffic; (weak, moderate, and high)	Wind speed; (km/h)	Relative humidity; (%)	Global radiation; (J/cm²)	Nebulosity; (octas)
2012-03-07		p.m.	Moderate	50.8	55	66	8
2012-03-15		p.m.	Moderate	10.8	29	170	1
2012-03-21		p.m.	Moderate	35.3	36	176	0
2012-03-29		p.m.	Moderate	40	33	137	7
2012-04-03		p.m.	Moderate	43.9	55	183	5
2012-04-30		p.m.	Moderate	26.3	51	83	8
2012-05-10		p.m.	Moderate	45.4	39	233	3
2012-05-15		a.m.	Weak	19.4	64	25	7
2012-06-14		a.m.	Moderate	20.2	50	288	5
2012-06-28		a.m.	Moderate	41.8	50	265	7
2012-07-04		a.m.	Weak	11.5	83	0	7
2012-07-16		p.m.	Moderate	34.2	43	200	6
2012-08-23		p.m.	Moderate	22.3	32	206	4
2012-09-03		p.m.	Moderate	45	31	194	1
2012-09-04		a.m.	Weak	10.1	85	15	2
2012-09-12		p.m.	Moderate	26.3	57	72	7
2012-10-01		p.m.	Moderate	23.4	44	120	4
2012-10-15		p.m.	Moderate	21.6	60	62	5
2012-11-23		a.m.	Moderate	32	83	24	8
2012-12-11		p.m.	Moderate	28.1	68	15	7
2013-02-14		a.m.	Moderate	10.4	90	62	7
2013-02-20		a.m.	Weak	19.1	93	0	7
2013-02-22		a.m.	High	48.2	66	85	1
2013-03-14		p.m.	Weak	13.3	83	0	0
2013-03-22		a.m.	High	29.9	74	88	4
2013-04-18		a.m.	Moderate	37.4	69	156	7
2013-08-05		p.m.	Weak	19.8	57	0	8
2013-08-20		a.m.	High	6.8	78	26	1
2013-08-30		p.m.	Moderate	27	37	223	2
2013-08-30		a.m.	Weak	6.8	91	0	8
2013-09-24		p.m.	Weak	5.8	98	0	8
2013-10-24		a.m.	Moderate	11.5	85	37	7
2013-10-24		p.m.	Weak	8.6	100	0	8
2013-12-09		p.m.	Moderate	9	93	38	5