Data Source Sensitivity in Solar Radiation Typical Meteorological Year (TMY) for Five Different Regions of Brazil

Anna Tippett; André Rodrigues Gonçalves; Enio Bueno Pereira; Fernando Ramos Martins; Gilberto Fisch; Rodrigo Santos Costa

doi:10.16993/tellusa.3261

Data Source Sensitivity in Solar Radiation Typical Meteorological Year (TMY) for Five Different Regions of Brazil

Volume 76 (2024): Issue 1

By: Anna Tippett, André Rodrigues Gonçalves , Enio Bueno Pereira , Fernando Ramos Martins , Gilberto Fisch and Rodrigo Santos Costa

Open Access

|Apr 2024

Figures & Tables

The five locations where the TMY’s were generated.

Table 1

Weighting factors scheme used for calculating TMY and TMY3.

SCHEME	T_max	T_min	$\bar{T}$	RH_max	RH_min	$\bar{R H}$	W_max	$\bar{W}$	GHI	DNI
TMY	1/24	1/24	2/24	1/24	1/24	2/24	2/24	2/24	12/24	–
TMY3	1/20	1/20	2/20	1/20	1/20	2/20	1/20	1/20	5/20	5/20

Table 2

Benchmark of the Brazil-SR model.

REGION	R	RELATIVE BIAS	RRMSE¹
North	0.81	0.60%	9.7%
Northeast	0.87	0.20%	8.3%
Central-West	0.86	0.50%	8.3%
Southeast	0.91	0.10%	8.4%

Table 3

The generated TMYs for different data sources, with the final FS statistic values for the TMY CDF compared to the long-term average CDF.

MONTH	YEAR
MONTH	TMY_OBS	TMY_MOD	TMY3_MOD	TMY3_REA
January	2009	2009	2009	2009
February	2011	2012	2011	2012
March	2013	2013	2013	2009
April	2008	2007	2007	2017
May	2017	2014	2014	2006
June	2011	2015	2015	2017
July	2013	2012	2012	2007
August	2015	2013	2013	2013
September	2014	2014	2012	2012
October	2016	2016	2016	2016
November	2014	2017	2017	2016
December	2017	2010	2010	2006
FS	0.0065	0.0073	0.0094	0.0066

Comparison of the long-term average CDF and TMY CDFs for observed and modelled GHI.

Table 4

The generated TMYs for different data sources, with the final FS statistic values for the TMY CDF compared to the long-term average CDF.

MONTH	YEAR
MONTH	TMY_OBS	TMY_MOD	TMY3_MOD	TMY3_REA
January	2013	2009	2011	2016
February	2010	2008	2008	2016
March	2010	2017	2014	2009
April	2011	2010	2010	2017
May	2010	2013	2012	2013
June	2017	2015	2015	2015
July	2011	2011	2011	2005
August	2011	2013	2013	2013
September	2013	2013	2013	2013
October	2008	2011	2016	2011
November	2012	2012	2012	2017
December	2006	2005	2012	2012
FS	0.0134	0.0074	0.0062	0.0090

Table 5

The generated TMYs for different data sources, with the final FS statistic values for the TMY CDF compared to the long-term average CDF.

MONTH	YEAR
MONTH	TMY_OBS	TMY_MOD	TMY3_MOD	TMY3_REA
January	2007	2006	2006	2006
February	2013	2013	2013	2016
March	2014	2014	2014	2014
April	2011	2014	2014	2014
May	2015	2011	2011	2013
June	2010	2010	2010	2017
July	2016	2013	2013	2010
August	2008	2014	2014	2006
September	2012	2012	2015	2013
October	2016	2016	2016	2017
November	2013	2011	2005	2013
December	2016	2016	2016	2006
FS	0.0106	0.0049	0.0057	0.0047

Table 6

The generated TMYs for different data sources, with the final FS statistic values for the TMY CDF compared to the long-term average CDF.

MONTH	YEAR
MONTH	TMY_OBS	TMY_MOD	TMY3_MOD	TMY3_REA
January	2010	2007	2007	2017
February	2009	2012	2012	2012
March	2011	2011	2011	2015
April	2011	2011	2007	2013
May	2012	2007	2007	2011
June	2017	2015	2015	2013
July	2011	2011	2011	2011
August	2005	2011	2013	2016
September	2008	2008	2008	2012
October	2014	2016	2016	2014
November	2013	2006	2006	2006
December	2014	2010	2014	2014
FS	0.0076	0.0094	0.0092	0.0107

Table 7

The generated TMYs for different data sources for Caicó, with the final FS statistic values for the TMY CDF compared to the long-term average CDF.

MONTH	YEAR
MONTH	TMY_OBS	TMY_MOD	TMY3_MOD	TMY3_REA
January	2009	2008	2009	2009
February	2017	2008	2017	2012
March	2007	2015	2015	2014
April	2007	2007	2007	2007
May	2007	2013	2013	2017
June	2010	2010	2010	2010
July	2010	2014	2010	2010
August	2010	2010	2010	2014
September	2013	2010	2010	2015
October	2013	2014	2014	2014
November	2008	2008	2012	2016
December	2011	2007	2007	2012
FS	0.0085	0.0060	0.0069	0.0107

Table 8

Number of TMMs in agreement between TMY_obs and TMY_mod/TMY3_mod/TMY3_rea for each station.

STATION	TMMs IN AGREEMENT	FS (75% QUARTILE)
Brasilia (A001)	5	0.0078
Pres. Prudente (A707)	3	0.0101
Sta Maria (A803)	7	0.0069
Palmas (A009)	6	0.0097
Caicó (A316)	7	0.0091

Table 9

Weighting schemes used for calculating the TMY (in parts out of 24).

SCHEME	T:RH:W:GHI	T_MAX	T_MIN	T	RH_MAX	RH_MIN	RH	W_MAX	W	GHI
A	4:4:4:12	1	1	2	1	1	2	2	2	12
B	2:2:2:18	1/2	1/2	1	1/2	1/2	1	1	1	18
C	0:0:0:24	0	0	0	0	0	0	0	0	24
D	6:6:6:6	3/2	3/2	3	3/2	3/2	3	3	3	6
E	0:8:8:8	0	0	0	2	2	4	4	4	8
F	8:0:8:8	2	2	4	0	0	0	4	4	8
G	8:8:0:8	2	2	4	2	2	4	0	0	8
H	8:8:8:0	2	2	4	2	2	4	4	4	0

Table 10

TMMs for Different Weighting Schemes, with TMMs different from the mode in italics.

MONTH	TMY FOR DIFFERENT WEIGHTING SCHEMES
MONTH	A	B	C	D	E	F	G	H	TMM (MODE)
January	2009	2009	2017	2009	2008	2009	2009	2009	2009
February	2011	2011	2009	2011	2009	2009	2011	2011	2011
March	2013	2013	2013	2013	2013	2012	2013	2013	2013
April	2008	2008	2014	2008	2012	2014	2008	2008	2008
May	2017	2017	2017	2017	2017	2017	2017	2017	2017
June	2011	2011	2015	2011	2011	2011	2011	2011	2011
July	2013	2013	2013	2013	2013	2013	2013	2013	2013
August	2015	2015	2015	2015	2015	2015	2015	2015	2015
September	2014	2014	2014	2014	2014	2014	2012	2012	2014
October	2016	2016	2016	2016	2013	2016	2016	2016	2016
November	2014	2014	2014	2017	2008	2017	2014	2017	2014
December	2017	2017	2006	2017	2017	2017	2017	2017	2017
Number different from mode	0	0	5	1	5	4	1	2	–

Table 11

The months with the 3 lowest weighted sums of the FS statistic (×10^–3), using weighting scheme C.

YEAR	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
2005	–	–	–	–	–	–	–	–	–	–	–	–
2006	–	–	–	–	–	–	–	–	–	–	3.91	4.23
2007	–	–	–	3.57	–	–	4.62	–	–	–	–	–
2008	–	–	–	3.89	–	–	–	2.77	–	–	–	–
2009	4.52	4.04	4.08	–	–	–	–	–	–	–	3.54	–
2010	5.30	–	–	–	3.83	–	–	–	–	5.24	–	5.32
2011	–	4.27	–	–	–	2.91	3.82	–	–	–	–	–
2012	–	–	4.31	–	–	3.09	–	2.68	4.14	–	–	–
2013	–	–	4.04	–	–	–	2.58	–	–	5.62	–	–
2014	–	–	–	3.52	4.31	–	–	–	2.64	–	3.23	–
2015	–	4.09	–	–	–	2.41	–	2.18	–	–	–	–
2016	–	–	–	–	–	–	–	–	5.47	3.18	–	–
2017	3.91	–	–	–	3.60	–	–	–	–	–	–	4.24

Comparison of the TMY CDFs for Global Horizontal Radiation for different weighting schemes at the A001 station.

References

Authors

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Articles in this issue

DOI: https://doi.org/10.16993/tellusa.3261 | Journal eISSN: 3035-9554

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Language: English

Page range: 29 - 41

Submitted on: Nov 1, 2023

Accepted on: Mar 19, 2024

Published on: Apr 9, 2024

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

Keywords:

TMY,

Typical Meteorological Year,

Meteorological Data,

Solar Energy,

Solar Radiation

© 2024 Anna Tippett, André Rodrigues Gonçalves, Enio Bueno Pereira, Fernando Ramos Martins, Gilberto Fisch, Rodrigo Santos Costa, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 76 (2024): Issue 1

Data Source Sensitivity in Solar Radiation Typical Meteorological Year (TMY) for Five Different Regions of Brazil

Figures & Tables

Figure 1

Table 1

Table 2

Table 3

Figure 2

Table 4

Figure 3

Table 5

Figure 4

Table 6

Figure 5

Table 7

Figure 6

Table 8

Table 9

Table 10

Table 11

Figure 7

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