稳定校正因子Wavewatch第三波模型——地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 09 - t20:53:05z //www.hoelymoley.com/feeds/question/3183 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/3183 10 稳定的校正因子Wavewatch第三波模型 boxofchalk1 //www.hoelymoley.com/users/1167 2015 - 01 - 03 - t05:14:21z 2015 - 01 - 11 t12:03:50z < p >我研究Wavewatch第三波模型(http://polar.ncep.noaa.gov/waves/index2.shtml < a href = " http://polar.ncep.noaa.gov/waves/index2.shtml " > < / >)。我困惑的稳定校正因子,名叫ASF的代码。它的目的是什么?与物理有关,还是与数值方法和CFL条件?我不能立即明白代码。< / p > //www.hoelymoley.com/questions/3183/-/3188 # 3188 12 答案由milancurcic Wavewatch稳定校正因子的第三波模型 milancurcic //www.hoelymoley.com/users/192 2015 - 01 - 03 - t15:48:13z 2015 - 01 - 03 - t15:56:30z < p >稳定校正因子<代码> ASF > < /代码与大气稳定性的影响(浮力和剪切功能)波的增长,并实现在Wavewatch3杜尔曼Chalikov 1996输入源项。修正的代码可以在<代码> w3updtmd发生。ftn < /代码>:< / p > < pre > <代码> !5。稳定校正(/ STAB2) !初始设置:!!SHSTAB = 1.4 !OFSTAB = -0.01 !CCNG = -0.1 !ccp = 0.1 ! FFNG = -150. ! FFPS = 150. ! !/STAB2 STAB0 = ZWIND * GRAV / 273. ! !/STAB2 DO ISEA=1, NSEA !/STAB2 STAB = STAB0 * AS(ISEA) / MAX(5.,U10(ISEA))**2 !/STAB2 STAB = MAX ( -1. , MIN ( 1. , STAB ) ) ! !/STAB2 THARG1 = MAX ( 0. , FFNG*(STAB-OFSTAB)) !/STAB2 THARG2 = MAX ( 0. , FFPS*(STAB-OFSTAB)) !/STAB2 COR1 = CCNG * TANH(THARG1) !/STAB2 COR2 = CCPS * TANH(THARG2) ! !/STAB2 ASF(ISEA) = SQRT ( (1.+COR1+COR2)/SHSTAB ) !/STAB2 U10(ISEA) = U10(ISEA) / ASF(ISEA) !/STAB2 END DO

The correction essentially accounts for atmospheric stability based on air-sea temperature difference, and is applied to calculate the "effective" wind speed at 10-m height, from the input wind speed. Note that this code is active only when /STAB2 switch is enabled (optional), and works only with the /ST2 switch (Tolman and Chalikov 1996 source term package). It's implementation and test results have been described in Tolman 2002.

This is also documented in the manual for version 4.18, see equations (2.86)-(2.89) in section 2.3.7.

References:

  • Tolman, H. L. and D. V. Chalikov, 1996: Source terms in a third-generation wind-wave model. J. Phys. Oceanogr., 26, 2,497–2,518.

  • Tolman, H. L., 2002: Validation of WAVEWATCH III version 1.15 for a global domain. Tech. Note 213, NOAA/NWS/NCEP/OMB, 33 pp.
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