GUIDE WAVE ANALYSIS AND FORECASTING - WMO

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130 WAVEOB CODE TABLES A 1 b w GUIDE TO WAVE ANALYSIS AND FORECASTING 0161 WMO Regional Association area in which buoy, drilling rig or oil- or gas-production platform has been deployed (1 – Region I; 2 – Region II, etc.) Sub-area belonging to the area indicated by A1 80 60 40 20 0 20 40 60 180 180 160 140 120 100 80 60 40 20 0 20 40 60 80 100 120 140 160 180 48 46 51 54 72 160 140 120 100 80 60 40 20 0 20 40 60 80 100 120 140 160 180 0880 da1da1 Mean direction, in units of 4 degrees, from which waves are coming for the band indicated, relative to true north da2da2 Principal direction, in units of 4 degrees, from which waves are coming for the band indicated, relative to true north dddd True direction, in units of 4 degrees, from which the dominant wave is coming d1d1 d2d2 True direction, in units of 4 degrees, from which waves are coming . . . dndn Code Code figure figure 00 358° to less than 2° . 01 2° to less than 6° 89 354° to less than 358° 02 6° to less than 10° 90–98 Not used . 99 Ratio of the spectral density for the band to the . maximum is less than 0.005 1731 Ia Indicator for frequency or wave number Code Code figure figure 0 Frequency (Hz) 1 Wave number (m –1) 1732 Ib Indicator for directional or non-directional spectral wave data Code Code figure figure 0 Non-directional 1 Directional 65 45 44 62 43 42 41 13 32 31 64 61 15 12 63 66 14 34 33 17 16 71 74 24 11 26 25 23 22 53 56 21 52 73 55 80 60 40 20 0 20 40 60
1744 Im Indicator for method of calculation of spectral data Code Code figure figure 1 Longuet-Higgins (1964) 4 Maximum entropy method 2 3 Longuet-Higgins (F3 method) Maximum likelihood method 5–9 Reserved 1747 Ip Indicator for type of platform Code Code figure figure 0 Sea station 2 Aircraft 1 Automatic data buoy 3 Satellite 1761 I1 Name of country or international agency which operates the satellite Code Code figure figure 0 European Community 3 Russian Federation 1 Japan 4 India 2 USA 5–9 Reserved MiMi MjMj ANNEX II 131 2582 Identification letters of the report Identification letters of the part of the report or the version of the code form Code form M i M i M j M j Land Sea Aircraft Satellite Part Part Part Part No station station A B C D distinction FM 12–X Ext. SYNOP AA XX FM 13–X SHIP BB XX FM 14–X Ext. SYNOP MOBIL OO XX FM 18–X BUOY ZZ YY FM 20–VIII RADOB FF GG AA BB FM 32–IX PILOT PP AA BB CC DD FM 33–IX PILOT SHIP QQ AA BB CC DD FM 34–IX PILOT MOBIL EE AA BB CC DD FM 35–X Ext. TEMP TT AA BB CC DD FM 36–X Ext. TEMP SHIP UU AA BB CC DD FM 37–X Ext. TEMP DROP XX AA BB CC DD FM 38–X Ext. TEMP MOBIL II AA BB CC DD FM 39–VI ROCOB RR XX FM 40–VI ROCOB SHIP SS XX FM 41–IV CODAR LL XX FM 62–VIII Ext. TRACKOB NN XX FM 63–IX BATHY JJ XX FM 63–X Ext. BATHY JJ YY FM 64–IX TESAC KK XX FM 65–IX WAVEOB MM XX FM 67–VI HYDRA HH XX FM 85–IX SAREP CC DD AA BB FM 86–VIII Ext. SATEM VV AA BB CC DD FM 87–VIII Ext. SARAD WW XX FM 88–X SATOB YY XX
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WORLD METEOROLOGICAL ORGANIZATION G
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© 1998, World Meteorological Organ
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IV Chapter 7 - WAVES IN SHALLOW WAT
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ACKNOWLEDGEMENTS The revision of th
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VIII has been included particularly
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X considerable attention. Annex III
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2 η Crest Zero level a H = 2a a Tr
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4 Figure 1.5 — Paths of the water
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6 When waves propagate into shallow
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8 1.3.2 Wave groups and group veloc
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10 wavelengths in a given sea state
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12 for instance, a frequency of 0.1
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14 in which E(f) is the variance de
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16 2.1.1 Wind and pressure analyses
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18 GUIDE TO WAVE ANALYSIS AND FOREC
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20 Figure 2.2(a) (right) — Usual
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22 As a quick approximation of ocea
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24 GUIDE TO WAVE ANALYSIS AND FOREC
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26 Gr G Gr ∇p C Cnf ∇p C Cnf
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28 POINT C — The effect of warm a
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30 a general sense, and can be appl
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32 Free atmosphere Ekman layer Cons
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3.1 Introduction This chapter gives
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ange of directions. Also, waves at
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small enough that swell can survive
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Figure 3.7 — Structure of spectra
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4.1 Introduction CHAPTER 4 WAVE FOR
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necessary to forecast waves for a p
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TABLE 4.4 Additional wave informati
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TABLE 4.6 Ranges of swell periods a
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this situation, the angular spreadi
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the energy flux is c gH 2 . This is
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α0, degrees Solution: 80° 70° 60
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5.1 Introduction National Meteorolo
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only once, since it is usual to sto
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Frequency 0.050 0.067 0.083 0.100 0
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The models may differ in several re
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The CH class may include many semi-
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6.1 Introductory remarks Since the
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in some applications, the zero up/d
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OPERATIONAL WAVE MODELS 71 Figure 6
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give large differences in the compa
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Wind (m/s) Waves (m) Buoy/GSOWM Wav
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TABLE 6.2 Numerical wave models ope
Page 89 and 90: TABLE 6.2 (cont.) Country Name of m
Page 91 and 92: 7.1 Introduction The evolution of w
Page 93 and 94: water boundary into shallow water.
Page 95 and 96: eflected waves, although the latter
Page 97 and 98: Energy (cm 2 /Hz) Energy (cm 2 /Hz)
Page 99 and 100: 8.1 Introduction Wave data are ofte
Page 101 and 102: matter and timing the intervals bet
Page 103 and 104: a Directional Waverider (Barstow et
Page 105 and 106: 80°N 60°N 40°N 20°N 0° -20°S
Page 107 and 108: a combination of sea-surface temper
Page 109 and 110: 8.7.1 Digital analysis of wave reco
Page 111 and 112: 9.1 Introduction Chapter 8 describe
Page 113 and 114: Presentation of data and wave clima
Page 115 and 116: the monsoon season of June to Septe
Page 117 and 118: Probability of non-exceedance case
Page 119 and 120: individual wave height derived usin
Page 121 and 122: emote, data-sparse areas. However,
Page 123 and 124: TABLE 9.2 (cont.) Country Source of
Page 125 and 126: For a storm hindcast, select the mo
Page 127 and 128: TABLE 9.3 (cont.) Country Model use
Page 129 and 130: ANNEX I ABBREVIATIONS AND KEY TO SY
Page 131 and 132: Abbreviation/ Definition Symbol MOS
Page 133 and 134: CODE FORM: D . . . . D or IIiii* SE
Page 135 and 136: sensors, spectral peak wave period
Page 137 and 138: cs1cs1 The ratio of the spectral de
Page 139: M jM j n mn m n smn sm n bn bn b P
Page 143 and 144: The following distributions are bri
Page 145 and 146: 4. Weibull distribution Probability
Page 147 and 148: 8. Fisher-Tippett Type I (FT-I) (or
Page 149 and 150: ANNEX IV THE PNJ (PIERSON-NEUMANN-J
Page 151 and 152: ANNEX IV 141 Duration graph. Distor
Page 153 and 154: REFERENCES Abbott, M. B., H. H. Pet
Page 155 and 156: REFERENCES 145 Carter, D. J. T., P.
Page 157 and 158: REFERENCES 147 Gumbel, E. J., 1958:
Page 159 and 160: REFERENCES 149 Maat, N., C. Kraan a
Page 161 and 162: Slutz, R. J., S. J. Lubker, J. D. H
Page 163 and 164: SELECTED BIBLIOGRAPHY CERC, 1984: C
Page 165 and 166: 156 Energy . . . . . . . . . . . .
Page 167 and 168: 158 steepness . . . . . . . . . . .
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GUIDE WAVE ANALYSIS AND FORECASTING - WMO

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