علاقة مستوى التكثيف الرفعي مع درجة الحرارة والرطوبة النسبية لمدينة بغداد

Abstract

The study of lifted condensation level (LCL) has been givena clear idea about the momentum of the energy in convectivecloud , that help an air parcel to rise upward from the surface thathappen either by mountains or rising of an air parcel upward fromthe surface. The goal of this research is to increase the knowledgefor what happening from thermodynamics and dynamics processesinside the cloud. By fixating on some climatic elements like(temperature and relative humidity) which they have great impacton the quality and quantity and period of precipitation. In this studycalculation the LCL for (٢٠٠٢),for four main times(٠٠:٠٠,٠٦:٠٠,١٢:٠٠,١٨:٠٠ GMT) for Baghdad then selectpractically months that shown have high quantity of rain (January,February) . The results shown the proportional relationshipbetween the ( LCL) and temperature ,while it become inverselyproportional to relative humidity. In general of the rain in Iraq isconvective especially in tow months (January ,February) at wheretemperature (١٩.٣١Ca) and relative humidity is (٤٨.١٤ %) at theLCL (٥.٦٠ m) this is in January , while in February the temperature become (١٦.٤Ca ) and the relative humidity is (٩٠.٢٨%) and is LCL( ١٤.٤٣ m) where highest rain be at these values .