干旱气象
榦旱氣象
간한기상
GANSU METEOROLOGY
2014年
3期
481-486
,共6页
小型蒸发和E-601 型蒸发%折算系数%民勤
小型蒸髮和E-601 型蒸髮%摺算繫數%民勤
소형증발화E-601 형증발%절산계수%민근
small pan evaporation%E-601 type evaporation%conversion coefficient%Minqin
利用民勤国家基准气候站1992～2001年5～9月各月小型与E-601型2种蒸发皿蒸发量的同步对比观测资料，通过对比分析、相关分析、离差分析方法以及气候估算值分析得出：（1）各月小型与E-601型2种蒸发的折算系数在0．504～0．601之间，平均折算系数为0．574；各年2种蒸发的折算系数在0．529～0．608之间，平均折算系数为0．574；（2）2种蒸发量5～9月的月、年平均折算系数相同，2种月蒸发量的平均相关系数为0．952，相关性很好，但2种蒸发的年平均相关系数为0．330，相关性很不理想，因此利用按月计算的折算系数来换算2种蒸发量更为合理；（3）小型蒸发量的离差系数大于E-601型蒸发量，小型蒸发量的离散程度比E-601型蒸发量大。由于E-601型蒸发量只有5～9月有观测资料，在考虑民勤站小型蒸发与E-601型蒸发资料互相换算时，首先考虑将E-601型蒸发量换算为小型蒸发量来利用，为有效利用民勤长序列小型蒸发量资料做了很好的衔接。
利用民勤國傢基準氣候站1992～2001年5～9月各月小型與E-601型2種蒸髮皿蒸髮量的同步對比觀測資料，通過對比分析、相關分析、離差分析方法以及氣候估算值分析得齣：（1）各月小型與E-601型2種蒸髮的摺算繫數在0．504～0．601之間，平均摺算繫數為0．574；各年2種蒸髮的摺算繫數在0．529～0．608之間，平均摺算繫數為0．574；（2）2種蒸髮量5～9月的月、年平均摺算繫數相同，2種月蒸髮量的平均相關繫數為0．952，相關性很好，但2種蒸髮的年平均相關繫數為0．330，相關性很不理想，因此利用按月計算的摺算繫數來換算2種蒸髮量更為閤理；（3）小型蒸髮量的離差繫數大于E-601型蒸髮量，小型蒸髮量的離散程度比E-601型蒸髮量大。由于E-601型蒸髮量隻有5～9月有觀測資料，在攷慮民勤站小型蒸髮與E-601型蒸髮資料互相換算時，首先攷慮將E-601型蒸髮量換算為小型蒸髮量來利用，為有效利用民勤長序列小型蒸髮量資料做瞭很好的銜接。
이용민근국가기준기후참1992～2001년5～9월각월소형여E-601형2충증발명증발량적동보대비관측자료，통과대비분석、상관분석、리차분석방법이급기후고산치분석득출：（1）각월소형여E-601형2충증발적절산계수재0．504～0．601지간，평균절산계수위0．574；각년2충증발적절산계수재0．529～0．608지간，평균절산계수위0．574；（2）2충증발량5～9월적월、년평균절산계수상동，2충월증발량적평균상관계수위0．952，상관성흔호，단2충증발적년평균상관계수위0．330，상관성흔불이상，인차이용안월계산적절산계수래환산2충증발량경위합리；（3）소형증발량적리차계수대우E-601형증발량，소형증발량적리산정도비E-601형증발량대。유우E-601형증발량지유5～9월유관측자료，재고필민근참소형증발여E-601형증발자료호상환산시，수선고필장E-601형증발량환산위소형증발량래이용，위유효이용민근장서렬소형증발량자료주료흔호적함접。
Based on the synchronization contrastive observational data of small evaporation pan and E-601 type from May to September during 1992-2001 in Minqin national reference climate station,two kinds of evaporation were compared and analyzed by using correla-tion,deviation and climate estimation methods.The results are as follows:(1 )The monthly conversion coefficients of two kinds of e-vaporation varied from 0.504 to 0.601,and the average value was 0.574,while the annual conversion coefficients of them varied from 0.529 to 0.608,and their average value was 0.574.(2)Although the monthly and the annual conversion coefficients of small pan e-vaporation and E-601 type evaporation were same,and the monthly average correlation coefficient of two kinds of evaporation was 0. 952 which showed a good correlation,the annual average correlation coefficients of two kinds of evaporation was only 0.330,so it was more reasonable that two kinds of evaporation shoud be converted through the calculated monthly conversion coefficients.(3)The dis-persion coefficient and dispersion degree of small pan evaporation was larger than those of E-601 type.Since E-601 evaporation was only observed from May to September,when small pan evaporation and E-601 type evaporation were inter-converted,it should be firstly considered that E-601 type evaporation was changed into small pan evaporation,which was a good connection for effective utili-zation of the long sequence small pan evaporation data.
