大气温室效应的一维辐射传热分析

One Dimensional Radiative Heat Transfer Analysis of Atmosphere Greenhouse Effects

大气中温室气体对地面长波热辐射的吸收和再发射导致了温室效应。计算了大气不同高度200～50000 cm^(-1)(0.2～50μm)光谱吸收系数,采用一维大气介质模型和射线踪迹-节点分析法(RTNAM)的多层模型对大气中二氧化碳及水蒸气不同浓度情况下的大气温度进行了计算。结果表明标准大气CO_2浓度增加1倍,对流层的温度上升0.453℃,若水蒸气浓度降低,CO_2的温室效应更加明显。

Greenhouse gases absorb the thermal radiation from earth surface and reemit part of energy back.This progress leads to the greenhouse effects.Absorption coefficients at different latitude were calculated form 200 cm^（-1）to 50000 cm^（-1）（0.2～50μm）.Using a one-dimensional radiative heat transfer model for atmosphere combined with multilayered model by Ray-Tracing/Nodal-Analyzing Method（RTNAM）,atmospheric temperature fields were calculated under different CO_2 and/or H_2O concentration conditions.The results show that temperature in troposphere rise 0.453℃if doubling of CO_2 concentration,and if the concentration of H_2O is lower,greenhouse effects of CO_2 become more obvious.