DYNAMIC RESPONSE OF THE HYGROMETER USING FINE THERMOCOUPLE PSYCHROMETER

A new method to obtain the frequency response character of the hygrometer using a fine thermocouple psychrometer by introducing the new concept, that the internal energy of the environment is constant, is presented with a practical example

WINTER PRECIPITATION ON HIGH MOUNTAINS

The results of the test observation of radio isotope snow gauge at Kariyasu Pass in the source region of Kurobe River are discussed. The total winter precipitation at this point is as large as that in summer and does not change year to year as snowfall on lowlands. In case of heavy snow, snowfall distribution on mountains and coast is affected by stability of airflow. Runoff in spring from snowmelting is closely related to rainfall

A NEW REDUCTION METHOD OF ANEMOMETER-BIVANE DATA

A new reduction method of anemometer-bivane data is proposed. By this new digital reduction method fine structure of vertical wind fluctuations can be visualized free from dynamic response character of the particular bivane, which tends to exaggerate fluctuations in the same period as free period of the bivane. This method was tested by the comparative field observation with a sonic anemometer. The result was proved to be satisfactory

APPLICATION OF SONIC ANEMOMETER-THERMOMETER TO THE STUDIES OF VARTICAL EDDY TRANSPORT PROCESSES IN THE ATMOSPHERIC BOUNDARY LAYERS

Fundamental problems and limitations of the application of the sonic anemometer-thermometer to the study of the eddy transport of physical entities in the atmospheric boundary layer are discussed. The sonic anemometer-thermometer is most promising equipment for this purpose, but its character and limitation should be borne in mind on the way of application. The main points are line-averaged character of the sensor and humidity dependence of the temperature indications. Applications to the measurement of vertical eddy transport of particular physical entities are discussed respectively

A NEW FLOATING EVAPORIMETER

A new evaporimeter for overwater measurement has been developed, which uses volume decrease of water in the pan to measure evaporation rate. The whole water in the evaporation pan is turned out and its volume decrease is measured on the raft every six hours. The operation of the instrument is entirely automatic. The evaporation rate is measured to 1/10 mm, even the pan is swaying, and is recorded on the coast by electric means. The instrument was tested at a small reservoir and the results was satisfactory

チョウオンパフウソクオンドケイニヨルセッチキソウナイノランリュウユソウノケンキュウ

京都大学0048新制・論文博士理学博士乙第1056号論理博第218号新制||理||88(附属図書館)1967UT51-44-A394(主査)教授 山元 龍三郎, 教授 田村 雄一, 教授 国司 秀明学位規則第5条第2項該当Kyoto UniversityDA

A DIRECT MEASUREMENT OF VERTICAL TRANSPORT OF TURBULENT KINETIC ENERGY IN THE LAYER NEAR THE GROUND WITH SONIC ANEMOMETER

Direct measurements of the vertical flux of turbulent kinetic energy near the ground by sonic anemometers were made, and by their results its divergence was estimated. According to the preliminary results obtained in this experiment, it might be concluded that the vertical divergence of tulbulent kinetic energy should not be neglected in the discussion of energy balance equation

Climatological Studies on Air-Sea Interaction over the Northwestern Pacific

Sensible and latent heat fluxes from ocean to atmosphere are estimated over the Northwestern Pacific by the use of data of the weather reports from commercial ships. As a result of analysis by the bulk method, a large amount of upward energy fluxes are seen in the winter over the Kuroshio region, and the downward sensible heat flux in the summer almost over the whole region, in spite of upward latent heat flux, is found. Annual variations of turbulent heat fluxes are also analyzed in several different sections of the Northwestern Pacific. A large range of variations as well as a large amount of energy fluxes are seen near the coast of the Continent and Japan Islands. The thermal energy balance analysis over the ocean shows that the sea surface receives more energy from radiation than the outgoing energy by turbulent sensible and latent heat transport into the atmosphere in almost the whole region over the Northwestern Pacific except for the area near the coast where thermal energy balance is held

Rainfall Deposit on a Wall of a Building in a Storm

Rainfall on a vertical wall of a building in a storm is studied. Raindrops in wind are carried horizontally at the speed of the wind; and they fall with a terminal speed determined by their sizes. The deposition efficiency of rain water on a building was estimated from analogy with the deposition of fog particles on an obstacle in wind, and was tested by field experiments. The field experiments show that the efficiency of deposition is about unity in the case of heavy rain and high wind