tailieunhanh - Evapotranspiration covers for landfills and waste sites - Chapter 6

Khí hậu và thời tiết ảnh hưởng đến hiệu suất của bãi chôn lấp bao gồm VÀ CHÚNG hơn ảnh hưởng thông thường bao gồm các loại rào cản. Thời tiết hàng ngày tại trang web chỉnh Cả hai đầu vào và cân bằng nước đi của cổ phiếu. Khí hậu là tổng hợp của sự kiện thời tiết và cung cấp một cách thuận tiện để hiểu ảnh hưởng của không khí tại một trang web đặc biệt. | 6 Climate Weather and Water Balance Climate and weather influence performance of ET landfill covers more than they influence conventional barrier-type covers. The daily weather at a site governs both the input and outgoing parts of the water balance. Climate is the sum of weather events and offers a convenient way to understand atmospheric influence at a particular site. CLIMATE AND WEATHER Table contains climate and weather parameters that are important to evaluation or design of ET landfill covers. Climate is the average course or condition of weather at a place over a period of years in terms of air temperature wind speed and precipitation Webster 1971 . Descriptions of climate may also include other important factors such as direction of prevailing wind and nearness of oceans or large lakes. Climatic data describe the long-term average state of weather for a region or a site. Chapter 2 Section introduced climate concepts for landfill cover evaluation. Weather is the state of the atmosphere with respect to heat or cold wetness or dryness calm or storm clearness or cloudiness Webster 1971 it controls climate. Weather parameters may be measured daily hourly or more often. Climate Regional climate should be the first consideration when evaluating the suitability of an alternative landfill cover for a site because it costs little. If the regional climate appears compatible with the requirements of the alternative cover then examine site characteristics to determine whether the site climate is also suitable. Site and regional climate may differ substantially for locations near mountains in valleys in the rain shadow of coastal mountains or near the coast or for other less obvious reasons. Use the longest available record to assess climate for a site. The 35 years of annual precipitation records ending in 1993 for Coshocton Ohio illustrate the point. The 35 year average annual precipitation is 934 mm however one 5 year period averaged 88 and .