2012 Project Summary SODA: Exploring Centennial Changes in Ocean Circulation
University is to explore the potential of data assimilation to allow reconstruction of ocean climate variability throughout the 20 th century. One theme of this work has been to carry out data assimilation reanalysis experiments relying primarily on surface forcing generated by the atmospheric 20CRv...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.434.7576 http://www.usclivar.org/sites/default/files/amoc/Carton_a_2012AMOC_projsum.pdf |
| Summary: | University is to explore the potential of data assimilation to allow reconstruction of ocean climate variability throughout the 20 th century. One theme of this work has been to carry out data assimilation reanalysis experiments relying primarily on surface forcing generated by the atmospheric 20CRv2. The potential of long reconstructions is evident in a number of the papers collected in the Special AMOC Volume of Deep-‐Sea Research (Carton and Häkkinen, 2011). A second has been to explore the usefulness of ensemble Kalman Filter methods. Recent Results (1) Exploration of past climate variability. Giese et al. (2010) examines one El Nino event early in the 20 th century and its potential climate (and human health) impact. Carton et al. (2011a) examines variability of water properties during the latter half of the 20 th century in the Nordic Seas and adjacent seas. This historical analysis reveals considerable decadal variability in temperature, salinity, and density, which has implications for a wide variety of processes, including the rates of water sinking. (2) Examination of historical data sets and observing system simulation experiments |
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