水资源与水工程学报
水資源與水工程學報
수자원여수공정학보
JOURNAL OF WATER RESOURCES AND WATER ENGINEERING
2015年
2期
232-236,240
,共6页
ET0 计算方法%气温%日照时间%Irmark-Allen方法%方法优选%内蒙古东部牧区
ET0 計算方法%氣溫%日照時間%Irmark-Allen方法%方法優選%內矇古東部牧區
ET0 계산방법%기온%일조시간%Irmark-Allen방법%방법우선%내몽고동부목구
ET0 caculation method%temperature%sunshine%Irmark-Allen method%poptimal selection of ET0 calculation methods%eastern pastoral areas in Inner Mongolia
内蒙古东部牧区多地处偏远边疆，气象站点有限，应用FA056 Penman－Monteith计算ET0相对困难。为了在缺测气象数据条件下准确计算ET0，本文依据该区内典型气象站点资料，以FAO56 Penman－Monteith为标准方法，以FAO17 Penman、Priestley－Taylor、Irmark－Allen拟合法、Hargreaves－Samani法为对照方法分别对ET0进行计算，并对4种方法适用性进行评价。结果表明：Priestley－Taylor与Hargreaves－Samani法计算值较FAO56 PM法计算结果偏大，不适于该地区ET0计算。 FAO17 Penman法和Irmark－Allen拟合法与FAO56 PM法计算结果平均相对误差小于15％，计算精度较高，但Irmark－Allen拟合法仅需气温和日照时间气象资料，因此，Irmark－Allen拟合法适宜缺测气象条件下内蒙古东部牧区ET0计算。
內矇古東部牧區多地處偏遠邊疆，氣象站點有限，應用FA056 Penman－Monteith計算ET0相對睏難。為瞭在缺測氣象數據條件下準確計算ET0，本文依據該區內典型氣象站點資料，以FAO56 Penman－Monteith為標準方法，以FAO17 Penman、Priestley－Taylor、Irmark－Allen擬閤法、Hargreaves－Samani法為對照方法分彆對ET0進行計算，併對4種方法適用性進行評價。結果錶明：Priestley－Taylor與Hargreaves－Samani法計算值較FAO56 PM法計算結果偏大，不適于該地區ET0計算。 FAO17 Penman法和Irmark－Allen擬閤法與FAO56 PM法計算結果平均相對誤差小于15％，計算精度較高，但Irmark－Allen擬閤法僅需氣溫和日照時間氣象資料，因此，Irmark－Allen擬閤法適宜缺測氣象條件下內矇古東部牧區ET0計算。
내몽고동부목구다지처편원변강，기상참점유한，응용FA056 Penman－Monteith계산ET0상대곤난。위료재결측기상수거조건하준학계산ET0，본문의거해구내전형기상참점자료，이FAO56 Penman－Monteith위표준방법，이FAO17 Penman、Priestley－Taylor、Irmark－Allen의합법、Hargreaves－Samani법위대조방법분별대ET0진행계산，병대4충방법괄용성진행평개。결과표명：Priestley－Taylor여Hargreaves－Samani법계산치교FAO56 PM법계산결과편대，불괄우해지구ET0계산。 FAO17 Penman법화Irmark－Allen의합법여FAO56 PM법계산결과평균상대오차소우15％，계산정도교고，단Irmark－Allen의합법부수기온화일조시간기상자료，인차，Irmark－Allen의합법괄의결측기상조건하내몽고동부목구ET0계산。
Many regions in eastern pastoral areas of Inner Mongolia locate in far distance and have limited meteorological stations , the calculation of ET0 in application of FAO56 Penman-Monteith formula is rela-tive difficult.In order to calculate ET0 accurately under the condition of lack of meteorological data ,the paper relied on data of typical meteorological stations , and took FAO56 Penman-Monteith as standard method,took methods of FAO17 Penman,Priestley-Taylor,Irmark-Allenfitting and Hargreaves -Sama-ni as comparative method to compute ET0 ,and evaluated the applicability of the four methods .The results show that the values calculated by methods of Priestley -Taylor and Hargreaves-Samani are greater than that by FAO56 Penman -Monteith method , and are not suitable for the region .FAO17 Penman method and Irmark-Allen method got approximated calculation results whose relative error is less than 15%and had great accuracy .However , Irmark-Allen method need only meteorology data such as air temperature and sunshine time .Therefore ,Irmark-Allen method is suitable for eastern pastoral areas of Inner Mongo-lia to calculate ET0 with lack of meteorological data .
