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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >IMPROVEMENTS IN NIMBUS 7 LIMB INFRARED MONITOR OF THE STRATOSPHERE OZONE PROFILES AS OBTAINED WITH UPDATED SPECTRAL LINE PARAMETERS AND RADIANCE ALGORITHMS
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IMPROVEMENTS IN NIMBUS 7 LIMB INFRARED MONITOR OF THE STRATOSPHERE OZONE PROFILES AS OBTAINED WITH UPDATED SPECTRAL LINE PARAMETERS AND RADIANCE ALGORITHMS

机译:通过更新的谱线参数和辐射度算法获得的NIMBUS 7肢红外区域红外辐射图的改进

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Ozone distributions from the Nimbus 7 Limb Infrared Monitor of the Stratosphere (LIMS) experiment of 1978-1979 are generally in good agreement with other concurrent ozone measurements in, the middle and upper stratosphere, but not at lower altitudes. LIMS ozone is too large below about the 15-hPa (or millibar) level, particularly at lower latitudes. A new LIMS ozone distribution is presented for 1 day of profiles, May 5, 1979, obtained with an improved forward radiance algorithm and using the spectral line parameters for the 9- to 10-mu m region in the HITRAN 92 compilation. However, we also divided our single day of retrieved ozone mixing ratio profiles by a suggested factor of 1.051, which makes them compatible with the ozone distributions from several of the UARS experiments. Our revised distribution still agrees with the archived LIMS ozone to better than +/- 5% above about the 15-hPa level, but there is a significant decrease for the revised ozone in the lower stratosphere. That decrease approaches 25% at 50 hPa in the tropics. In general, the revised LIMS ozone is now in accord with the comparison data sets for the stratosphere, except for the lowest levels (Umkehr layer 3 or 63-127 hPa), where the effects of interfering species and small biases in LIMS temperatures are most pronounced. It is concluded that the current 9- to 10-mu m ozone line list is adequate for obtaining good quality ozone mixing ratio profiles from satellite broadband limb-infrared measurements. [References: 25]
机译:1978年至1979年的“平流层Nimbus 7肢红外监测器(LIMS)”实验中的臭氧分布通常与平流层中层和高层平流层中其他同时进行的臭氧测量非常吻合,但在较低高度处却没有。 LIMS臭氧太大,低于15 hPa(或毫巴)左右,特别是在较低纬度地区。提出了1979年5月5日的1天剖面的新LIMS臭氧分布,该分布是使用改进的前向辐射算法并使用HITRAN 92汇编中9至10微米区域的光谱线参数获得的。但是,我们还将单日检索到的臭氧混合比分布除以建议的1.051倍,这使其与UARS多个实验中的臭氧分布兼容。我们的修订后的分布仍然与LIMS臭氧相吻合,比15 hPa的水平高出+/- 5%,但平流层下部的修订后的臭氧量却显着减少。在热带地区,在50 hPa时,这种降低接近25%。总体而言,修订后的LIMS臭氧现在与平流层的比较数据集一致,但最低水平(Umkehr第3层或63-127 hPa)除外,在LIMS层中,干扰物质的影响和较小的偏差最大。发音。结论是,当前的9至10微米的臭氧线清单足以从卫星宽带肢体红外测量中获得高质量的臭氧混合比分布图。 [参考:25]

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