There are currently significant disagreements in the strength of the water vapour continuum in the near-infrared region. To understand the effects of these disagreements on the absorption of solar radiation, line-by-line radiative transfer calculations were performed from 2000 to 10,000 cm⁻¹ (1–5 μm) for three standard atmospheres; tropical, mid-latitude summer and sub-arctic winter atmospheres. These calculations were carried out at a solar zenith angle of 60° using line parameters from HITRAN (HIgh-resolution TRANsmission). Three currently available water vapour continuum models were selected for this study; versions 2.5 and 3.2 of the semi-empirical MT_CKD (Mlawer-Tobin-Clough-Kneizys-Davies) model and the laboratory-measured CAVIAR (Continuum Absorption at Visible and Infrared Wavelengths and its Atmospheric Relevance) model. The differences between the contributions of both MT_CKD models to near-infrared absorption and heating are modest for all three atmospheres. The additional absorption due the CAVIAR model more than doubles those due to both MT_CKD models for the tropical and mid-latitude summer atmospheres. For both atmospheres, the extra heating of the CAVIAR model is up to a factor of 5 more than those of the MT_CKD models. For the sub-arctic winter atmosphere, the differences between the extra absorption and heating of the CAVIAR and those of both MT_CKD models are relatively less. Thus, an update of the MT_CKD model from version 2.5 to 3.2 has a relatively small impact on near-infrared spectrally integrated absorbed solar fluxes and heating rates. But their contributions to the calculations of these quantities differ significantly from that of the much stronger CAVIAR model.

当前在近红外区域中水蒸气连续体的强度存在明显分歧。为了了解这些分歧对太阳辐射吸收的影响，在2000至10,000 cm ^-1范围内逐行进行了辐射转移计算（1–5μm）适用于三种标准大气；热带，中纬度夏季和亚北极冬季大气。这些计算是使用来自HITRAN（高分辨率TRANsmission）的线参数以60°的太阳天顶角进行的。这项研究选择了三个当前可用的水蒸气连续谱模型。半经验MT_CKD（Mlawer-Tobin-Clough-Kneizys-Davies）模型和实验室测量的CAVIAR（可见光和红外波长的连续吸收及其大气相关性）模型的版本2.5和3.2。对于所有三种大气，两个MT_CKD模型对近红外吸收和加热的贡献之间的差异均不大。在热带和中纬度夏季大气中，CAVIAR模型带来的额外吸收是MT_CKD模型带来的额外吸收的两倍以上。对于两种大气，CAVIAR模型的额外热量最多比MT_CKD模型的热量高5倍。对于亚北极冬季大气，CAVIAR与两个MT_CKD模型的额外吸收和加热之间的差异相对较小。因此，将MT_CKD模型从版本2.5更新到版本3.2对近红外光谱积分吸收的太阳通量和加热速率的影响相对较小。但是它们对这些数量的计算的贡献与更强大的CAVIAR模型的贡献有很大不同。将MT_CKD模型从2.5版更新到3.2版对近红外光谱积分吸收的太阳通量和加热速率的影响相对较小。但是它们对这些数量的计算的贡献与更强大的CAVIAR模型的贡献有很大不同。将MT_CKD模型从2.5版更新到3.2版对近红外光谱积分吸收的太阳通量和加热速率的影响相对较小。但是它们对这些数量的计算的贡献与更强大的CAVIAR模型的贡献有很大不同。