BÀI GIẢNG KHÍ TƯỢNG LÝ THUYẾT CHƯƠNG 1

... maximum possible amount of water vapour which the air can contain is about 20 g/m3, whereas at 40oC it can hold about 50g/m3 Thus, the higher the air temperature the greater the saturation value of ... to, say l0oC, then the new dew-point would be l0oC, the absolute humidity 11 g/m3 and a total of (20 - 11) = g/m3 of water vapour would have been condensed into visible droplets (eg fog, mist,...

Ngày tải lên: 08/05/2016, 11:45

... in this book or other related books mentioned in 1. 1 1. 2.3 Reporting time Weather reporting from VOSs is conducted times a day at 00, 06, 12 and 18 Universal Time Coordinated (UTe) worldwide ... Envelope to send logbooks or floppy disks (postage free within Japan) (see Appendix 1) 1. 2 Careful practices 1. 2 .1 General notandum in observation In order to obtain correct data, it is i...

Ngày tải lên: 08/05/2016, 11:59

... corrected to get the station value (see 2. 6) of the atmospheric pressure The barometer should be checked every months by PMOs to maintain the accuracy (see Ch. 12) 2. 6 Correction to sea level The atmospheric ... (pressure at mean sea level) 2. 7 Barograph A barograph is used to check observed values of pressure and to record barometric tendencies and amount of change Fig .2. 2 shows an a...

Ngày tải lên: 08/05/2016, 12:06

... CHAPTER Observation of Air Temperature and Dew-point Temperature 3. 3 Dry and wet-bulb thermometer 3. 3.1 Maintenance of wet-bulb thermometer Wet-bulb temperature is observed with ... change the gauze, examine whether the thermometer bulbs are clean Fig .3. 6 shows various types of wet-bulb covered by wet gauze 3. 3.2 Observation by psychrometer About 10 minutes before observation, ... is...

Ngày tải lên: 08/05/2016, 12:06

... define the code are shown in Figs .5. 1 -5. 3 Typical photos for each code are shown in succeeding pages 37 CHAPTER Observation of Cloud 40 CHAPTER Observation of Cloud 50  ... consideration of its cloud height might help you to find its appropriate type 5. 2 Details of the cloud types (genera) Table .5. 1 shows 10 types of clouds which belong to levels of cloud height General ... CHAPTE...

Ngày tải lên: 08/05/2016, 12:06

... since the previous main synoptic hour (00, 06, 12 or 18UTC) Table 7. 2 shows the period to be covered by the past weather at each observation time And table 7. 3 shows the past weather codes The code ... defined as the state of the atmosphere at the time of observation or during the hour (60 minutes) preceding it Table 7. 1 shows the relationship between weather summary and codes of presen...

Ngày tải lên: 08/05/2016, 12:07

... have ceased to blow, are referred to as "swell" Fig .9. 1 shows a schematic view of wind waves (sea) with sharp crests and swell with gentle ones 9. 2 Characteristics of ocean waves Major characteristics ... trough and crest (see Fig 9. 2) 4) Wave length: the horizontal distance between successive crests or troughs It is equal to the wave period multiplied by the wave speed (see Fig 9. 2)...

Ngày tải lên: 08/05/2016, 12:07

... is 10/ 10 and no water is visible (b) Very close pack ice: Floating ice in which the concentration is 9 /10 to less than 10/ 10 (c) Close pack ice: Floating ice in which the concentration is 7 /10 ... which the concentration is 7 /10 to 8 /10, composed of floes mostly in contact (d) Open pack ice: Floating ice in which the ice concentration is 4 /10 to 6 /10, with many leads and polynya...

Ngày tải lên: 08/05/2016, 12:07

... CHAPTER 12 CHAPTER 12 Port Meteorological Officer (PMO) Port Meteorological Officer (PMO) The Port Meteorological ... pmo@climar.kishou.go.ip 75 CHAPTER 12 Port Meteorological Officer (PMO) Maritime Meteorological Division, Maizuru Marine Observatory 901, Shimofukui, Maizuru, 624 -0946 JAPAN fax: +81-773-76- 4114 , E-mail: pmo@climar.kishou.go.jp ... Marine Department, Japan Meteorolog...

Ngày tải lên: 08/05/2016, 12:07

... Sửa lỗi / phát truyền lại Chương 6: Mã hóa kênh Mã vòng (CRC) 39/ 45 Mã chập Khái niệm Mã tuyến tính Mã vòng (CRC) Mã chập Khái niệm Mã hóa Biểu diễn Giải mã Chương 6: Mã hóa kênh Mã chập 40/ 45 ... Giải mã hamming? Chương 6: Mã hóa kênh Mã tuyến tính 30/ 45 Mã vòng (CRC) Khái niệm Mã tuyến tính Mã vòng (CRC) Khái niệm Tính chất Mã h...

Ngày tải lên: 24/10/2014, 14:41

... lượng truyền tin hệ thống truyền tin đánh giá chất lượng truyền tín hiệu thông thấp Chương 7: Lý thuyết tín hiệu Biểu diễn thông thấp tín hiệu hệ thống truyền tin 4/ 73 Khái niệm-02 Thông tin truyền ... lượng truyền tin hệ thống truyền tin đánh giá chất lượng truyền tín hiệu thông thấp Chương 7: Lý thuyết tín hiệu Biểu diễn thông...

Ngày tải lên: 24/10/2014, 14:41