Representativeness errors for radiosonde observations
نویسنده
چکیده
Data from the United Kingdom operational upper air network, as well as from special radiosonde trials, have been analysed to provide statistics of spatial and temporal atmospheric variations. These statistics are applied to a study of the network performance and of representativeness errors associated with the use of the data in synoptic analysis. The results also have application to comparisons between measurements from radiosondes and those from other observing systems. For example, it is demonstrated that minimum collocation errors associated with radiosonde temperature measurements located at the centre of a satellite radiometer scan spot of radius 55 km are <1 degC for levels in the troposphere and lower stratosphere.
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Understanding the errors caused by spatial scale transformation in Earth observations and simulations requires a10rigorous definition of scale. These errors are also an important component of representativeness errors in data assimilation.Several relevant studies have been conducted, but the theory of the scale associated with representativeness errors is still notwell developed...
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