Deutscher Wetterdienst Hamburg, 09.Nov.2007 Marine Meteorological Archive ==================================== Description of HISTOR Working Format ==================================== General information: The data are not yet checked for meteorological errors. Temperature The readings of the thermometers (dry bulb, wet bulb, and sea surface) are corrected according to the instrument correction information. Air pressure The barometer readings are temperature corrected according to the auxiliary thermometer temperature. The reduction to sea level has generally been performed, with rare exceptions which can not be identified anymore. The gravity correction has not been made. Sea level pressure is given in this format without an index: - Values beginning with digit "7" in column 68 are to be read as tenths of mm, e.g. 7456 means 745.6 mm. - Values beginning with digit "2" in column 68 are to be read as hundredths of inch, e.g. 2986 means 29.86 inch. Date/time The date and time information is taken from the original logbook without change. Position During the time sequence position check the missing positions were calculated from the given positions (mostly 12 hour observation) and the course/speed informations from inbetween. Errors have been manually corrected. Meteorological Quality Control The quality control concerning meteorological errors has not yet been applied to the data. ------------ header line: ------------ columns length contents ======= ====== ======== 1 - 4 4 book number 5 - 5 1 blank 6 - 9 4 start year (not always available) 10 - 14 5 blank 15 - 18 4 end year (not always available) 19 - 74 56 blank 75 - 77 3 header line identifier „999“ --- end of header line --- --------------------------------- data line (line 2 to end of file) --------------------------------- columns length contents ======= ====== ======== Organisation 1 - 4 4 sequence number in file 4 - 5 1 blank 6 - 9 4 book number 10 - 10 1 blank 11 - 11 1 type of ship blank or 2: sailing ship 3: steam ship Date and time 12 - 13 2 day of month 14 - 15 2 month of year 16 - 18 3 year (first decimal place omitted) 19 - 20 2 hour of day(local time) Position 21 - 22 2 latitude (degrees) 23 - 24 2 latitude (minutes) 25 - 25 1 latitude-index 0: north 1: south 26 - 28 3 longitude (degrees) 29 - 30 2 longitude (minutes) 31 - 31 1 longitude-index 0: east 1: west Magnetic variation 32 - 33 2 magnetic variation (degrees) 34 - 34 1 magnetic variation(cardinal point) 35 - 35 1 magnetic variation(rhumb) 36 - 36 1 magnetic variation index 0: east 1: west Position determination 37 - 37 1 type of position determination 0: astronomical 1: bearing 2: calculated Course information 38 - 38 1 course index 0: true heading 1: magnetic heading 1st course 39 - 39 1 1st course index 0: north 1: south 40 - 41 2 1st course direction (degrees) 42 - 42 1 1st course index (cardinal point) 43 - 43 1 1st course index (rhumb) 44 - 44 1 1st course index 0: east 1: west 45 - 46 2 1st course distance (nm) 2nd course 47 - 47 1 2nd course index 0: north 1: south 48 - 49 2 2nd course (degrees) 50 - 50 1 2nd course (cardinal point) 51 - 51 1 2nd course (rhumb) 52 - 52 1 2nd course index 0: east 1: west 53 - 54 2 2nd course distance (nm) 3rd course 55 - 55 1 3rd course index 0: north 1: south 56 - 57 2 3rd course (degrees) 58 - 58 1 3rd course (cardinal point) 59 - 59 1 3rd course (rhumb) 60 - 60 1 3rd course index east 0: east 1: west 61 - 62 2 3rd course distance (nm) Wind 63 - 63 1 wind index 0: true heading 1: magnetic heading 64 - 65 2 wind direction (32 degree compass card) 66 - 67 2 wind force (Beaufort scale) Sea level pressure 68 - 71 4 sea level pressure (mm or inch) Auxiliary thermometer 72 - 72 1 auxiliary thermometer 0: °C 1: °F 2: °R 73 - 73 1 auxiliary thermometer sign blank: positive temperature 1: negative temperature 74 - 77 4 auxiliary thermometer value (tenths degree) Dry bulb temperature 78 - 78 1 dry bulb temperature index 0: °C 1: °F 2: °R 79 - 79 1 dry bulb temperature sign blank: positive temperature 1: negative temperature 80 - 83 4 dry bulb temperature value (tenths degree) Wet bulb temperature 84 - 84 1 wet bulb temperature index 0: °C 1: °F 2: °R 85 - 85 1 wet bulb temperature sign blank: positive temperature 1: negative temperature 86 - 89 4 wet bulb temperature value (tenths degree) Total cloud cover 90 - 91 2 total cloud cover (tenths) Wind wave 92 - 92 1 wind wave index 0: true heading 1: magnetic heading 93 - 94 2 wind wave direction (32 degree compass card) 95 – 95 1 wind wave force (Petersen scale) 0: flat 1: very smooth 2: smooth 3: little movement 4: moderate movement 5: rather rough 6: rough 7: heavy 8: very heavy 9: abnormal Sea surface temperature 96 - 96 1 sea surface temperature index 0: °C 1: °F 2: °R 97 - 97 1 sea surface temperature sign blank: positive temperature 1: negative temperature 98 - 101 4 sea surface temperature value (tenths degree) Beaufort weather 102 – 102 1 Beaufort weather since last observation 0: - 1: - 2: - 3: - 4: fog 5: drizzle 6: rain 7: snow 8: shower (drizzle, rain, snow or hail) 9: thunderstorm 103 - 103 1 Beaufort-weather 0: b - blue sky 1: bc - sky less than ½ covered by clouds 2: c - cloudy, sky ½ covered by clouds 3: cc - sky ¾ covered by clouds 4: o - overcast 5: kb - no cloud reported 6: - 7: - 8: - 9: kw - no weather reported 104 – 104 1 Beaufort-weather 0: f - foggy 1: f - thick fog 2: m - misty 3: m - thick mist 4: v - visibility clear 5: v - visibility very clear 6: z - hazy 7: g - gloomy 8: u - ugly 9: - 105 – 105 1 Beaufort weather 0: d - drizzle (spray) 1: d - heavy drizzle 2: r - rain 3: r - heavy rain 4: p/pr - rain showers, rain squalls 5: p/pr - heavy rain showers / heavy rain squalls 6: - 7: qs/ps - snow showers / snow squalls 8: qs/ps - heavy snow showers / heavy snow squalls 9: pd/ds - drizzle shower 106 – 106 1 Beaufort weather 0: s - snow 1: s - heavy snow 2: h - hail 3: h - heavy hail 4: sh - snow graupel 5: sh - heavy snow graupel 6: rs - rain and snow mixed 7: rs - heavy rain and snow mixed 8: - 9: - 107 – 107 1 Beaufort weather 0: l - intermittend lightning 1: l - continuous lightning 2: t - intermittend thunder 3: t - continuous thunder 4: lt - thunderstorm 5: lt - intense thunderstorm 6: dr - drizzle with rain 7: dr - heavy drizzle with rain 8: rh - rain and hail 9: rh - heavy rain and hail 108 – 109 2 Beaufort weather 0: q - squally 1: q - heavy squalls 2: ground fog 3: damp fog 4: wet fog 5: coastal fog 6: sun ring 7: sun halo 8: moon ring 9: moon halo 10: - 11: water spout / wind spout 110 – 111 2 Beaufort weather 0: w - dew 1: w - heavy dew 2: duststorm 3: frost 4: hoar frost 5: glaze 6: ice, floating ice, ice pack 7: iceberg 8: aurora 9: air mirage 10: - 11: St.Elmo’s fire 12: wind shear Swell wave 112 – 112 1 swell wave index 0: true heading 1: magnetic heading 113 – 114 2 swell wave direction (32 degree compass card) 115 – 115 1 swell wave force (Petersen scale) 0: no swell 1: very low 2: low 3: slight 4: moderate 5: rather rough 6: rough 7: heavy 8: very heavy 9: abnormal Correction information 116 – 134 19 columns to receive intermediate correction informations (this part should be ignored) --- end of data line --- --- end of description of HISTOR Working Format ---