本文關(guān)鍵詞： 姒ngstr錸m-Presscott模型 參數(shù)率定 總輻射量 參考作物蒸發(fā)蒸騰量 插補(bǔ)　出處：《農(nóng)業(yè)機(jī)械學(xué)報(bào)》2016年10期 　論文類型：期刊論文

【摘要】：在長期連續(xù)觀測(cè)中,總輻射(Rs)的觀測(cè)數(shù)據(jù)通常有不同程度的缺失。基于日照時(shí)數(shù)的姒ngstr錸m-Presscott(AP)模型是一種廣泛應(yīng)用且精度較高的總輻射估算經(jīng)驗(yàn)?zāi)Ｐ�。選取A-P模型3種不同參數(shù)率定方法 (M1:每年率定,M2:分月率定,M3:多年率定),基于6個(gè)輻射站的輻射資料,對(duì)年平均Rs、年平均ET0、參數(shù)取值和插補(bǔ)精度進(jìn)行了比較。t檢驗(yàn)結(jié)果表明,3種方法下A-P模型在昌都站數(shù)據(jù)插補(bǔ)無明顯差異,Rs年際變化大是造成該站Rs模擬不準(zhǔn)的主要原因。在宜昌和南寧站,M1方法進(jìn)行數(shù)據(jù)插補(bǔ)精度高于其他方法,M1方法 Rs缺失天數(shù)分別為40 d和70 d時(shí),兩站計(jì)算的參考作物蒸發(fā)蒸騰量(ET0)與實(shí)測(cè)Rs計(jì)算的ET0相比,t檢驗(yàn)無明顯差異。M2與M3相比精度稍高,但在昆明、贛州、杭州和南寧站冬季精度更高且6—8月份精度更低。與1990年以前相比,各站點(diǎn)A-P模型參數(shù)a在1990年以后有明顯上升,工業(yè)污染導(dǎo)致氣溶膠增加是原因之一。A-P模型在極端年份率定精度不高,在極端炎熱氣候年份,應(yīng)用該模型用于灌溉預(yù)報(bào)時(shí)會(huì)低估作物耗水量,可能會(huì)給決策帶來風(fēng)險(xiǎn)。該研究結(jié)果可用于A-P模型的風(fēng)險(xiǎn)評(píng)估和提高總輻射時(shí)間序列數(shù)據(jù)缺失情況下的插補(bǔ)精度。
[Abstract]:In the long-term continuous observation, the total radiation (Rs) data usually have different degree of loss. The Si ngstr re m-Presscott sunshine hours (AP) model is based on the empirical model to estimate the total radiation of a high precision and wide application. Select the A-P model with 3 different parameter calibration method (M1: annual rate M2:, the monthly rate, M3: rate of 6 years), the radiation radiation station based on the data of annual average Rs, average ET0, parameter values and interpolation accuracy were compared with the results of.T test showed that the A-P model of 3 methods in Changdu station data interpolation have no obvious difference, is Rs the interannual variation of the main reason to cause the Rs simulation are not allowed. In Yichang and Nanning Railway Station, M1 method of data interpolation accuracy is higher than other methods, M1 method and Rs deletion days were 40 d and 70 D, reference crop evapotranspiration calculation of two stations (ET0) compared with the calculated and measured Rs ET0, t. Test of.M2 showed no significant difference compared with M3 precision is slightly higher, but in Kunming, Ganzhou, Hangzhou and Nanning Railway Station in winter, higher precision and lower accuracy. From 6 to August and 1990 compared to the previous site of the parameters of A-P model a in 1990 after a significant increase in industrial pollution has caused the increase in aerosols is one of the reasons why.A-P model calibration accuracy in extreme years, in extreme hot climate years, the application of the model for the forecast of irrigation will underestimate the crop water consumption, may pose a risk to the decision. The results can be used in the risk assessment model of A-P interpolation accuracy and improve the total radiation time series in case of missing data.

【作者單位】： 南昌工程學(xué)院鄱陽湖流域水工程安全與資源高效利用國家地方聯(lián)合工程實(shí)驗(yàn)室;西北農(nóng)林科技大學(xué)旱區(qū)農(nóng)業(yè)水土工程教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)項(xiàng)目(2011AA100504) 教育部高等學(xué)校創(chuàng)新引智計(jì)劃(111計(jì)劃)項(xiàng)目(B12007)
【分類號(hào)】：S161.1
，

本文編號(hào)：1514336