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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Comparison of satellite ozone observations in coincident air masses in early November 1994
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Comparison of satellite ozone observations in coincident air masses in early November 1994

机译：1994年11月上旬同时发生的空气中卫星臭氧观测值的比较

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Ozone observed by seven satellite instruments, the Atmospheric Trace Molecule Spectroscopy instrument (ATMOS), Stratospheric Aerosol and Gas Experiment (SAGE) II, Polar Ozone and Aerosol Measurement (POAM) II instrument, Halogen Occultation Experiment (HALOE), Microwave Limb Sounder (MLS), Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere (CRISTA), and Millimeter-wave Atmospheric Sounder (MAS), during early November 1994 is mapped in equivalent latitude/potential temperature (EqL/theta) space to facilitate nearly global comparisons of measurements taken in similar air masses. Ozone from all instruments usually agrees to within 0.5 ppmv (similar to5%) in the upper stratosphere and similar to0.25 ppmv in the lower stratosphere; larger differences in the midstratosphere are primarily due to sampling differences. Individual profile comparisons, selected to match meteorological conditions, show remarkably good agreement between all instruments that sample similar latitudes, although some small differences do not appear to be related to sampling differences. In the Southern Hemisphere (SH) midstratosphere, the instruments (ATMOS, SAGE II, and FOAM II) with observations confined to high latitudes measured low EqLs in air drawn up from low latitudes that had formed a "low-ozone pocket"; they measured much lower ozone at low EqL than those that sampled low latitudes. A low-ozone pocket had also formed in the Northern Hemisphere (NH) midstratosphere (a month earlier than this phenomenon has previously been reported), also resulting in differences between instruments based on their sampling patterns. FOAM If sampled only high latitudes in the NH, where extravortex sampling did not include tropical, high-ozone air, and thus measured lower ozone at a given EqL than other instruments. Ozone laminae appear in coincident profiles from multiple instruments, confirming atmospheric origins for these features and agreement in some detail between ozone observed by several instruments; reverse trajectory calculations indicate such laminae arise from filamentation in and around the polar vortices. Both EqL/theta and profile comparisons indicate overall excellent agreement in ozone observed by all seven instruments in early November 1994. When care is taken to compare similar air masses and to understand sampling effects, much useful information can be obtained from comparisons between instruments with very different observing patterns. [References: 45]
机译：七种卫星仪器观测到的臭氧：大气痕量分子光谱仪（ATMOS），平流层气溶胶和气体实验（SAGE）II，极地臭氧和气溶胶测量（POAM）II仪器，卤素潜伏实验（HALOE），微波测深仪（MLS） ），1994年11月上旬的大气低温红外光谱仪和望远镜（CRISTA）和毫米波大气探测仪（MAS）绘制在等效纬度/潜在温度（EqL /θ）空间中，以方便进行几乎所有的测量比较在类似的空气质量中。所有仪器中的臭氧通常在平流层上部同意在0.5 ppmv之内（约5％），在平流层下部同意在0.25 ppmv之内;平流层中较大的差异主要是由于采样差异所致。为匹配气象条件而选择的单个剖面比较显示，在对相似纬度进行采样的所有仪器之间都具有非常好的一致性，尽管有些微小差异似乎与采样差异无关。在南半球平流层中层，观测范围仅限于高纬度的仪器（ATMOS，SAGE II和FOAM II）测量了从低纬度形成“低臭氧层”的空气中的低EqL。他们在低EqL下测得的臭氧含量比在低纬度地区测得的臭氧含量低得多。北半球平流层中部也形成了一个低臭氧层（比以前报道的现象早一个月），这也导致了基于它们的采样方式而不同的仪器。泡沫如果仅在北半球的高纬度地区采样，而涡旋采样不包括热带高臭氧空气，则在给定的EqL下测得的臭氧含量比其他仪器低。臭氧层流以多种仪器的一致轮廓出现，证实了这些特征的大气成因，并且在几种仪器观察到的臭氧之间有一些细节上的一致性;反向轨迹计算表明，这种层流是由极涡中及其周围的丝状化引起的。 EqL / theta和廓线的比较都表明1994年11月上旬所有七种仪器都观察到了臭氧的总体优异一致性。当注意比较相似的空气质量并了解采样效果时，可以从具有非常高的仪器之间的比较中获得很多有用的信息。不同的观察模式。 [参考：45]

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