降雨指數 的英文怎麼說
中文拼音 [jiàngyǔzhǐshǔ]
降雨指數
英文
rainfall index-
According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain
根據《隨機水文學》理論中的時間序列分析法,建立了適合三江平原井灌水稻需水量預報的非平穩時序隨機模型;通過分析降雨隨機特性,選定季節性時序隨機模型,建立了適合三江平原井灌水稻降雨預報的月平均降雨模型;根據最小二乘法,計算出幾種常用水分生產函數中的敏感指數及敏感系數,進而得到三江平原適宜採用的水分生產函數漠型及模型中敏感指數的變化規律;本文提出遺傳動態規劃法( raga ? dp ) ,即採用改進的基於實數編碼的加速遺傳演算法( realcodingbasedacceleratinggeneticalgorithm ,簡稱raga )與動態規劃法( dpsa )相結合,推求非充分灌溉條件下三江平原井灌水稻的最優灌溉制度。Meanwhile, an artificial imitation rainfall system was developed in order to study the characteristics of city underlying surface and make experimental check up about the relative appraising index, on which 200 rainfall experiments are made, analyzing the effect of rainfall intensity to the runoff of underlying surface ; the relationship between runoff permeability and unit factor of rainfall intensity and duration ; the effect of rainfall intensity, duration, soil moisture content, and temperature to the runoff permeability ; the relationship between rainfall quantity and runoff permeability, and make mathematical imitation to the expe rimental results, to find the mutual - relationships, and make discussion about the differences between equations of fit
同時,為研究城市下墊面的產匯流特性研製了一套人工模擬降雨系統,並對相關評價指標進行了實測校驗。在此基礎上,進行了200多場降雨實驗,分析了雨強、歷時、土壤前期含水量、溫度、降雨量、不同下墊面和不同覆蓋度等對產匯流的影響,及各種因素對徑流系數的影響和相關性,建立了一定條件下歷時徑流系數,雨強徑流系數,流量徑流系數的函數模型。( 5 ) parameterization of infrared satellite cloud imagery and its application in rainfall predication obvious correlation exist between the probability of rain and parameterization estimate such as average brightness temperature ( tb ), brightness temperature variance ( f ), equivalent cloudage ( cn ), brightness temperature area index ( al - the first a5 - the fifth grade, a6 - the sixth grade )
( 5 )衛星雲圖參數化及在降雨預測中的應用紅外衛星雲圖參數化估計值,與局地降雨過程的發生、發展具有較為密切的關系。相關較密切的參數有平均亮溫、亮溫方差、等效雲量、亮溫面積指數( 1級、 5級、 6級) 。The water level on the crucial wangjiaba hydrological station may soon surge above the danger line as more rains have been forecast in the next few days, cheng dianlong, deputy director of the office of the flood control and drought relief headquarters, said
防汛抗旱指揮部辦公室副主任程淀龍透露:在未來的數天內,還會有更多的降雨,關鍵的王家壩水文站的水位可能很快就要超過警戒水位Most complete wireless weather coverage available : high and low day temperature in celsius or fahrenheit, weather type icon and text, real feel ( rf ) temperature ( what temperature really feels like ), wind direction, gust and speed in mph, km / h or m / s, uv index ( the sun ' s ultraviolet intensity level ), amount of day precipitations in in, cm or mm, pressure, visibility and more
最完整的無線天氣覆蓋可以利用:攝氏和華氏的溫度高低,天氣類型圖標和描述,實際感覺到的溫度(真正你感覺到的溫度) ,風向,風力和風速,時速或秒速,紫外線指數(太陽紫外線強度等級) ,降雨雪量精確到英寸,厘米,毫米,壓力可見的描述,還要其他的嗎( 4 ) the correlations are significant between the sth position index and the general circulation. in the westerly ( easterly ) year, equatorial westerly is weaker ( stronger ), cross - equatorial flow is weaker ( stronger ), south china sea summer monsoon is weaker ( stronger ), the yangtze river valley westerly is stronger ( weaker ), which has the positive ( negative ) effect on the maintenance of rain band over the yangtze river valley, so the rainfall is more ( less ) in this area and it is hit by floods ( droughts ), vice versa
( 4 )本文運用定義的副高指數研究了六月份副高偏東偏西年份的大型環流特徵及其對我國東部天氣的影響,風矢量場和相關場分析結果表明:副高偏西(東)年,赤道西風減弱(增強) ,越赤道氣流偏弱(增強) ,南海夏季風偏弱(強) ,而長江流域西風增強(減弱) ,有(不)利於雨帶在江淮流域維持,該地區降水偏多(少)易澇(旱) 。By surveying the sample plot, the relations between the stabil ity of the mountai n slope of soil preparation for planting by using explosion and other factors s uch as precipitation, terrain , were studied. by using the method of quantitative t heory i, the interrelation between the damaged degrees of soil preparation progra ms by using explosion in low mountain area with abundant precipitation and terrain factors was systematically analysed, and the mathematical models relate d were developed. the results show that the precipitation in early days and the m aximum precipitation per day are the primary factors causing the soil prepara tion program damaged. the main terrain factors of the mountain slope that affect the program stability are according to their importance, slope, position and dir ection. the suitable mountain slope for soil preparation by using explosion is th e slope of less than 25
通過典型標準樣地調查資料,探討了造林爆破整地工程的坡地穩定性與降水、地形等因子的相互關系,應用數量化理論,對在有充分降水條件下的低山丘陵區的爆破整地工程損失程度與地形因子之間的關系進行了系統分析,並建立了相應的數學模型,研究指出,充分的前期降水和日最大降雨量是引起爆破整地工程損失的激發因素;影響爆破整地工程穩定性的主要地形因子是地面坡度,其次為坡位、坡向,實施爆破整地工程的地面坡度以不超過25為宜。The inner factors refer to the mechanical behavior such as the rock type, density, construction parameter, etc. and the outer factors refer to the foundation condition, geological condition, valley shape, rise and fall of water level, seepage due to respiration
內因是指堆石料的巖質巖性、密實程度、施工參數等組成壩體的各種力學性質;外因是壩址所處的基礎條件和兩岸的地形地質等條件、河谷形狀、水庫水位的變化、降雨浸潤等因素。In the end of this thesis five conclusions were put forward : ( 1 ) hydraulic condition can influence the stability of land slope in different aspects. ( 2 ) the weight of the land slope is the inner factors of land slope, but it ' s not the decisive factor of causing a landslide. ( 3 ) the parameter of anti - shearing strength ( c, ) is the key parameter on analyzing the stability of land slope
文章最後得出了五點結論: (一) 、降雨對邊坡穩定性的影響是多方面的; (二)滑體自重是產生滑坡的內在因素,但不是發生滑坡的決定因素; (三)滑面的抗剪強度指標( c 、 )是進行邊坡穩定性分析的關鍵指標; (四)通過對個舊卡房滑坡體的位移觀測數據的分析,找到了位移變化的一些規律; (五)臨滑預報工作在現實生活中尤為重要。Abstract : monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage
文摘:利用華北平原地區的13個站點, 45年( 1951 1995 )的降水資料,對夏季4個時段( 6月、 7月、 8月、 6 8月)進行了z指數計算,確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 , 8月,嚴重乾旱則主要發生在8月,並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變,另外,烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬,對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季( 6 8月) ,西北太平洋副熱帶高壓偏西、偏北,赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南,赤道東太平洋海溫則處于上升階段The elements of vorticity, divergence, specific humidity, moisture flux divergence and k index etc. were benefited to the form and development of storm rainfall over the rainfall region
降水區上空的渦度、散度、比濕、水汽通量散度、 k指數等要素有利於暴雨的形成和發展。Other derived products include regional temperature forecasts, rain index, vertical profiles, meteorograms and a selection of specially prepared weather maps
其他預報產品尚有區域氣溫預報降雨指數垂直廓線圖氣象要素圖及特製天氣圖等等。Using the dsd models and forward scattering amplitude computed by the least squares fitting method, the specific attenuations at l - 400ghz have been computed and analyzed, the parameters of " power law " relation between specific attenuation and rainfall rate are obtained. the specific attenuations in qingdao, guangzhou and xinxiang are compared with itu - r specific rain attenuation models
利用平均雨滴尺寸分佈和點匹配法計算的雨滴的前向散射數據計算和分析了青島、廣州和新鄉地區1 ? 400ghz特徵雨衰減特性,得到了特徵雨衰減與降雨率的指數關系參數,並與itu - r ( internationaltelecommunicationunion - radiocommunication )特徵雨衰減模式進行了系統的比較研究。Using the daily rainfall data of 740 stations over china and ncep daily up - ai data from 1971 to 2000, we analyzed the average mei - yu climate field. based on the climate field and mei - yu intensity index, we confirm that the year of 1999 is a typical mei - yu. besides, the intensity of mei - yu rainfall in 1999 is the highest since we had record, so the analysis of mei - yu in 1999 can present the common characteristics of mei - yu
本文利用1971 - 2000年中國740站的日平均降水資料和ncep的日平均高空資料分析了梅雨氣候場,利用梅雨的氣候場及中國氣象局氣候診斷預測室的梅雨強度綜合指數,確定了1999年是一個非常典型的梅雨年,並且1999年梅雨期間的降水強度是歷史以來的最高值,因此我們對1999年梅雨進行的分析有很大的代表性。Hourly rainfall information derived from weather radars and raingauges is routinely ingested into the model for more effective simulation of rain systems fig. 4, allowing forecasters to make useful reference of the quantitative precipitation forecasts and precipitation trends provided by objective model guidance
運作后,天氣雷達及雨量計的每小時雨量分析數據定規地被放到模式內圖表4 ,讓模式更有效地模擬降雨系統的演變,為預報員提供極具參考價值的定量降雨預報和降雨趨勢的客觀指引。The equation is y = a ebx, the interrelated coefficients are all larger than 0. 95 ; when the rainfalls are close, the volume of the surface runoff increases with the intensity of rainfall and the volume of the surface runoff is remarkable related with the maximum rain intensities of 30 minutes ; with the effect on rain harvesting acreage, the cover rate of the plants, the gradient, and the average soil thickness, the cover rate of the plants and the average soil thickness are the important factors which can affect the volume of rain harvesting. and the average soil thickness is the dominant factor. in order to get good result, we must choice the slope which the cover rate of the plants is low and the average soil thickness is thin, meanwhile increase the rain - harvesting acreage
太行山片麻巖區坡面集雨規律及集雨技術:集雨量與降雨量呈顯著正相關,並且在降雨量大於17 . 6mm時,集雨量隨降雨量的增加呈指數形式增加,擬合方程為y = ae ~ ( bx ) ,相關系數均大於0 . 95 ;降雨量相近的條件下,徑流量隨降雨強度的增大而增大,且在片麻巖山地, 30min最大雨強是影響產流的關鍵因子;在集雨面積、植被覆蓋度、坡度以及平均土層厚度等因素的共同影響下,植被覆蓋度和平均土層厚度是影響集雨量多少的主要因素,其中平均土層厚度是主導因素;而要想取得良好的集雨效果,必須在選擇植被覆蓋度低、坡面土層厚度薄的坡面的同時,加大集雨面積。Figure 4 diurnal variation of uv index on 2 august 1999. the showers around noon on that day drove down the uv index but it rose to the level of 8 to 9 in the afternoon when the showers eased off
圖四紫外線指數在1999年8月2日的日際變化。當日中午時份的驟雨令紫外線指數下降,但下午驟雨過后紫外線指數又回升到8至9之間。The conclusion is the interrelated dimension may be used as an important index of regional rainfall characteristics
研究表明:分形維數可作為反映區域降雨特點的有價值指標。Monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage
利用華北平原地區的13個站點, 45年( 1951 1995 )的降水資料,對夏季4個時段( 6月、 7月、 8月、 6 8月)進行了z指數計算,確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 , 8月,嚴重乾旱則主要發生在8月,並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變,另外,烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬,對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季( 6 8月) ,西北太平洋副熱帶高壓偏西、偏北,赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南,赤道東太平洋海溫則處于上升階段Minton points out that an increasing percentage of california ‘ s precipitation over recent decades is falling as rain rather than snow
明頓指出,最近數十年來,加利福尼亞的降雨量不斷增加而降雪卻在減少。分享友人