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Climate models as guidance for the design of observing systems: the case of polar climate and sea ice prediction
Massonnet, F. (2019). Climate models as guidance for the design of observing systems: the case of polar climate and sea ice prediction. Current Climate Change Reports 5(4): 334-344. https://hdl.handle.net/10.1007/s40641-019-00151-w
In: Current Climate Change Reports. Springer Verlag: Berlin; Heidelberg. ISSN 2198-6061, more
Peer reviewed article  

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Keyword
    Marine/Coastal
Author keywords
    polar regions; observing system design; climate modeling; environmental prediction; emergent constraints; data assimilation; observing system experiments; satellite simulators

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  • Massonnet, F., more

Abstract

    Purpose of review

    The Arctic and Antarctic are among the regions most exposed to climate change, but ironically, they are also the ones for which the least observations are available. Climate models have been instrumental in completing the big picture. It is generally accepted that observations feed the development of climate models: parameterizations are designed based on empirically observed relationships, climate model predictions are initialized using observational products, and numerical simulations are evaluated given matching observational datasets.

    Recent findings

    Recent research suggests that the opposite also holds: climate models can feed the development of polar observational networks by indicating the type, location, frequency, and timing of measurements that would be most useful for answering a specific scientific question.

    Summary

    Here, we review the foundations of this emerging notion with five cases borrowed from the field of polar prediction with a focus on sea ice (sub-seasonal to centennial time scales). We suggest that climate models, besides their usual purposes, can be used to objectively prioritize future observational needs – if, of course, the limitations of the realism of these models have been recognized. This idea, which has been already extensively exploited in the context of Numerical Weather Prediction, reinforces the notion that observations and models are two sides of the same coin rather than distinct conceptual entities.


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