A Comparison of Models for Estimating Solar Radiation from Sunshine Duration in Croatia

Table 6

Comparison of monthly average daily global horizontal radiation calculated using Dogniaux-Lemoine monthly dependent model with measurements for seven Croatian locations. and are in kWh/m².

Location		Month
		1	2	3	4	5	6	7	8	9	10	11	12
Dubrovnik		1.720	2.444	3.820	5.132	6.198	6.984	7.267	6.593	4.865	3.236	1.982	1.664
		1.673	2.384	3.878	5.078	6.187	7.292	7.457	6.670	4.883	2.718	1.995	1.721
	PE	2.8%	2.5%	-1.5%	1.1%	0.2%	-4.2%	-2.5%	-1.1%	-0.4%	19.0%	-0.7%	-3.3%
Gospić		1.191	1.910	3.388	4.673	5.625	6.741	6.873	5.947	4.074	2.457	1.358	1.096
		1.205	1.966	3.202	4.509	5.472	6.695	6.926	6.006	3.867	2.358	1.206	1.083
	PE	-1.2%	-2.9%	5.8%	3.6%	2.8%	0.7%	-0.8%	-1.0%	5.3%	4.2%	12.6%	1.2%
Parg		1.146	1.765	3.154	4.425	5.191	6.293	6.247	5.628	3.743	2.255	1.349	1.146
		1.103	1.666	3.005	4.164	4.837	6.011	5.884	5.473	3.470	2.118	1.103	1.126
	PE	3.9%	6.0%	5.0%	6.3%	7.3%	4.7%	6.2%	2.8%	7.9%	6.5%	22.3%	1.8%
Rijeka		1.395	2.147	3.445	4.833	5.674	6.586	6.714	6.164	4.141	2.705	1.501	1.247
		1.216	1.931	3.258	4.520	5.428	6.655	6.771	6.219	4.092	2.618	1.329	1.102
	PE	14.7%	11.2%	5.8%	6.9%	4.5%	-1.0%	-0.8%	-0.9%	1.2%	3.3%	12.9%	13.1%
Split		1.659	2.386	3.807	5.105	6.165	7.096	7.363	6.522	4.699	3.136	1.840	1.518
		1.592	2.362	3.803	4.979	6.113	7.061	7.362	6.509	4.789	3.127	1.884	1.544
	PE	4.2%	1.0%	0.1%	2.5%	0.9%	0.5%	0.0%	0.2%	-1.9%	0.3%	-2.3%	-1.7%
Zadar		1.497	2.330	3.730	5.041	6.203	7.240	7.405	6.346	4.668	2.965	1.702	1.340
		1.530	2.389	3.883	5.228	6.322	7.425	7.583	6.653	4.709	2.727	1.757	1.368
	PE	-2.2%	-2.5%	-3.9%	-3.6%	-1.9%	-2.5%	-2.3%	-4.6%	-0.9%	8.7%	-3.1%	-2.0%
Zagreb		1.073	1.771	3.205	4.590	5.584	6.414	6.307	5.656	3.858	2.330	1.248	0.937
		1.015	1.689	3.078	4.454	5.274	6.170	6.155	5.541	3.587	2.293	1.149	0.909
	PE	5.7%	4.9%	4.1%	3.0%	5.9%	4.0%	2.5%	2.1%	7.5%	1.6%	8.6%	3.1%