A comparative observation of ground-atmosphere interaction inside and outside greenhouses during the winter season
Observation data from the Shouguang micro-meteorological experiment from Nov.16,2016 to Apr.11,2017 were utilized to investigate the characteristics of land-atmosphere interactions in winter greenhouse-covered farmland.The conclusions were as follows:there were significant differences in meteorological elements between inside and outside the greenhouse,with lower wind speeds inside.The plastic film of the greenhouse had insulation and moisture retention effects,benefiting crop growth in winter.Soil temperature and soil moisture inside the greenhouse were higher than outside.The average soil heat flux at 5 cm depth inside and outside the greenhouse was 0.33 and-5.40 W/m2,respectively;the average net radiation was 36.1 and 37.3 W/m2,respectively,and average surface albedo was 0.19 and 0.23,respectively.Sensible heat and latent heat fluxes within the closed environment of the greenhouse could be ignored,and the average sensible heat and latent heat fluxes outside the greenhouse were 10.6 and 13.2 W/m2,respectively,with the latent heat slightly higher than the sensible heat flux.
plastic film coverageobservation consistencyenergy closure rateland air interaction char-acteristic
万方数据
维普
