日照迹线位置移动原理和软件设计  

Principles of Sunlight-Line Location Displacement and Software Design

作　　者：徐琼芳[1,2] 高庆九[1] 

机构地区：[1]南京信息工程大学大气科学学院,南京210044 [2]湖北省潜江市气象局,潜江433100

出　　处：《气象科技》2011年第2期207-211,共5页Meteorological Science and Technology

摘　　要：根据地球自转和绕太阳公转轨迹规律,分析了黄赤交角、太阳赤纬、经度和太阳高度角对日照迹线形成的影响,解释了春分、秋分、夏至、冬至几个具有代表性日期日照迹线形成的规律,阐述了暗筒式日照计日照迹线位置随季节变化的原理。地球运动轨迹固定,以地球作为参照物,地球相对静止,太阳围绕地球转,太阳光在无任何遮挡的情况下,每日的日照迹线可严格求出。用严谨的理论依据,导出日照迹线公式,并设计出软件,每日日照迹线可任意全真显示。Based on the principles of earth rotation and revolution,the effects of the obliquity of the ecliptic plane,solar declination,longitude,and solar elevation angle on the formation of the sunlight line on a dark tube sunshine recorder are analyzed.The principles of sunlight-line location displacement with seasonal variation are described,and the regularities of sunlight-line formation at spring equinox,autumnal equinox,winter solstice and summer solstice are discussed.Under the condition of the fixed earth motion trajectory,the day-to-day sunshine path line can be obtained.With the theoretical basis,the software for sunlight line formation are designed and introduced.

关 键 词：日照迹线 地球自转 太阳赤纬 软件设计 

分 类 号：P414.52[天文地球—大气科学及气象学]