A three-dimensional simulation of the ozone annual cycle using winds from a data assimilation system
A three-dimensional simulation of the ozone annual cycle using winds from a data assimilation system
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利用数据同化系统的风对臭氧年度循环进行三维模拟
DOI：
10.1029/95jd02601
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发表时间：
1996
影响因子：
--
通讯作者：
L. Coy
中科院分区：
文献类型：
--
作者：
A. Douglass;C. Weaver;R. Rood;L. Coy
来自 NASA 戈达德平流层数据同化程序的风场用于三维化学和传输模型，以生成 1991 年 9 月 11 日至 1992 年 9 月 10 日的臭氧模拟。光化学产生和损失取自戈达德二维模型。将计算出的臭氧与 Nimbus 7 上的总臭氧测绘光谱仪 (TOMS) 和高层大气研究卫星上的微波临边探测器的观测结果进行比较。尽管模型的臭氧总量在热带地区比 TOMS 低约 50 多布森单位（DU；=2.69 × 10−16 分子 cm−2），在中高纬度地区比 TOMS 高出 70 DU，但模拟的臭氧场再现了观测中的许多特征。即使在积分结束时，模拟的总臭氧中的天气特征与 TOMS 观测结果非常相似，表明该模型保持了水平和垂直梯度的实际值，至少在平流层下部是这样。从模型和观测结果在几天到几个月的时间尺度上的良好比较，我们推断由同化风场驱动的传输非常接近实际的大气传输。因此，同化风对于可能对平流层低层输送敏感的应用是有用的。
The wind fields from the NASA Goddard stratospheric data assimilation procedure are used in a three-dimensional chemistry and transport model to produce an ozone simulation for the year September 11, 1991 to September 10, 1992. Photochemical production and loss are taken from the Goddard two-dimensional model. The calculated ozone is compared with observations from the total ozone mapping spectrometer (TOMS) onboard Nimbus 7 and the microwave limb sounder on the upper atmospheric research satellite. Although the model total ozone is about 50 Dobson units (DU; =2.69 × 10−16 molecules cm−2) lower than TOMS in the tropics and up to 70 DU higher than TOMS in middle to high latitudes, the simulated ozone fields reproduce many of the features in the observations. Even at the end of this integration, the synoptic features in the modeled total ozone are very similar to TOMS observations, indicating that the model maintains realistic values for the horizontal and vertical gradients, at least in the lower stratosphere. From this good comparison between model and observations on timescales ranging from days to months, we infer that the transport driven by the assimilated wind fields closely approximates the actual atmospheric transport. Therefore the assimilated winds are useful for applications which may be sensitive to the lower stratospheric transport.