Comparison of SAR Wind Speed Retrieval Algorithms for Evaluating Offshore Wind Energy Resources

K. Kozai; T. Ohsawa; Y. Takeyama; S. Shimada; R. Niwa; Charlotte Bay Hasager; Merete Badger

Comparison of SAR Wind Speed Retrieval Algorithms for Evaluating Offshore Wind Energy Resources

K. Kozai, T. Ohsawa, Y. Takeyama, S. Shimada, R. Niwa, Charlotte Bay Hasager, Merete Badger

Technical University of Denmark

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Abstract

Envisat/ASAR-derived offshore wind speeds and energy densities based on 4 different SAR wind speed retrieval algorithms (CMOD4, CMOD-IFR2, CMOD5, CMOD5.N) are compared with observed wind speeds and energy densities for evaluating offshore wind energy resources. CMOD4 ignores effects of atmospheric stability, while CMOD5.N assumes a neutral condition. By utilizing Monin-Obukov similarity theory in the inverse LKB code, equivalent neutral wind speeds derived from CMOD5.N are converted to stability dependent wind speeds (CMOD5N_ SDW). Results of comparison in terms of energy density indicate the CMOD5N_SDW shows the lowest errors than the other algorithms.

Original language	English
Title of host publication	Proceedings (CD-ROM)
Publisher	Techno-Ocean Network
Publication date	2010
Pages	007
Publication status	Published - 2010
Externally published	Yes
Event	Techno-Oceaqn 2010: A New Era of the Ocean - Kobe, Japan Duration: 14 Oct 2010 → 16 Oct 2010

Conference

Conference	Techno-Oceaqn 2010
Country/Territory	Japan
City	Kobe
Period	14/10/2010 → 16/10/2010

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Cite this

@inproceedings{2ce7225caf97455a991bebd345bb394d,

title = "Comparison of SAR Wind Speed Retrieval Algorithms for Evaluating Offshore Wind Energy Resources",

abstract = "Envisat/ASAR-derived offshore wind speeds and energy densities based on 4 different SAR wind speed retrieval algorithms (CMOD4, CMOD-IFR2, CMOD5, CMOD5.N) are compared with observed wind speeds and energy densities for evaluating offshore wind energy resources. CMOD4 ignores effects of atmospheric stability, while CMOD5.N assumes a neutral condition. By utilizing Monin-Obukov similarity theory in the inverse LKB code, equivalent neutral wind speeds derived from CMOD5.N are converted to stability dependent wind speeds (CMOD5N_ SDW). Results of comparison in terms of energy density indicate the CMOD5N_SDW shows the lowest errors than the other algorithms.",

author = "K. Kozai and T. Ohsawa and Y. Takeyama and S. Shimada and R. Niwa and Hasager, {Charlotte Bay} and Merete Badger",

year = "2010",

language = "English",

pages = "007",

booktitle = "Proceedings (CD-ROM)",

publisher = "Techno-Ocean Network",

address = "Japan",

note = "Techno-Oceaqn 2010 : A New Era of the Ocean ; Conference date: 14-10-2010 Through 16-10-2010",

}

TY - GEN

T1 - Comparison of SAR Wind Speed Retrieval Algorithms for Evaluating Offshore Wind Energy Resources

AU - Kozai, K.

AU - Ohsawa, T.

AU - Takeyama, Y.

AU - Shimada, S.

AU - Niwa, R.

AU - Hasager, Charlotte Bay

AU - Badger, Merete

PY - 2010

Y1 - 2010

N2 - Envisat/ASAR-derived offshore wind speeds and energy densities based on 4 different SAR wind speed retrieval algorithms (CMOD4, CMOD-IFR2, CMOD5, CMOD5.N) are compared with observed wind speeds and energy densities for evaluating offshore wind energy resources. CMOD4 ignores effects of atmospheric stability, while CMOD5.N assumes a neutral condition. By utilizing Monin-Obukov similarity theory in the inverse LKB code, equivalent neutral wind speeds derived from CMOD5.N are converted to stability dependent wind speeds (CMOD5N_ SDW). Results of comparison in terms of energy density indicate the CMOD5N_SDW shows the lowest errors than the other algorithms.

AB - Envisat/ASAR-derived offshore wind speeds and energy densities based on 4 different SAR wind speed retrieval algorithms (CMOD4, CMOD-IFR2, CMOD5, CMOD5.N) are compared with observed wind speeds and energy densities for evaluating offshore wind energy resources. CMOD4 ignores effects of atmospheric stability, while CMOD5.N assumes a neutral condition. By utilizing Monin-Obukov similarity theory in the inverse LKB code, equivalent neutral wind speeds derived from CMOD5.N are converted to stability dependent wind speeds (CMOD5N_ SDW). Results of comparison in terms of energy density indicate the CMOD5N_SDW shows the lowest errors than the other algorithms.

M3 - Article in proceedings

SP - 007

BT - Proceedings (CD-ROM)

PB - Techno-Ocean Network

T2 - Techno-Oceaqn 2010

Y2 - 14 October 2010 through 16 October 2010

ER -