A realtime observatory for laboratory simulation of planetary flows
Motivated by the large-scale circulation of the atmosphere and ocean, we develop a system that uses observations from a laboratory analog to constrain, in real time, a numerical simulation of the laboratory flow. This system provides a tool to rapidly prototype new methods for state and parameter...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Springer Science + Business Media B.V.
2011
|
| Online Access: | http://hdl.handle.net/1721.1/64700 https://orcid.org/0000-0001-9230-3591 |
| _version_ | 1811089666671116288 |
|---|---|
| author | Hill, Christopher N. Wong, Andrew Stransky, Scott Ravela, Sai Marshall, John C |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Hill, Christopher N. Wong, Andrew Stransky, Scott Ravela, Sai Marshall, John C |
| author_sort | Hill, Christopher N. |
| collection | MIT |
| description | Motivated by the large-scale circulation of the atmosphere and ocean, we develop a system that uses
observations from a laboratory analog to constrain, in real time, a numerical simulation of the laboratory
flow. This system provides a tool to rapidly prototype new methods for state and parameter
estimation, and facilitates the study of prediction, predictability, and transport of geophysical fluids
where observations or numerical simulations would not independently suffice.
A computer vision system is used to extract measurements of the physical simulation. Observations
are used to constrain the model-state of the MIT General Circulation Model in a probabilistic, ensemble based assimilation approach. Using a combination of parallelism, domain decomposition and an efficient
scheme to select ensembles of model-states, we show that estimates that effectively track the fluid state
can be produced. To the best of our knowledge this is the first such observatory for laboratory
analogs of planetary circulation that functions in real time. |
| first_indexed | 2024-09-23T14:22:49Z |
| format | Article |
| id | mit-1721.1/64700 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:22:49Z |
| publishDate | 2011 |
| publisher | Springer Science + Business Media B.V. |
| record_format | dspace |
| spelling | mit-1721.1/647002024-05-15T02:20:03Z A realtime observatory for laboratory simulation of planetary flows Hill, Christopher N. Wong, Andrew Stransky, Scott Ravela, Sai Marshall, John C Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Marshall, John C. Marshall, John C. Ravela, Srinivas (Sai) Hill, Christopher N. Wong, Andrew Stransky, Scott Motivated by the large-scale circulation of the atmosphere and ocean, we develop a system that uses observations from a laboratory analog to constrain, in real time, a numerical simulation of the laboratory flow. This system provides a tool to rapidly prototype new methods for state and parameter estimation, and facilitates the study of prediction, predictability, and transport of geophysical fluids where observations or numerical simulations would not independently suffice. A computer vision system is used to extract measurements of the physical simulation. Observations are used to constrain the model-state of the MIT General Circulation Model in a probabilistic, ensemble based assimilation approach. Using a combination of parallelism, domain decomposition and an efficient scheme to select ensembles of model-states, we show that estimates that effectively track the fluid state can be produced. To the best of our knowledge this is the first such observatory for laboratory analogs of planetary circulation that functions in real time. National Science Foundation (U.S.) (CNS-0540259) National Science Foundation (U.S.) (grant CNS-0540248) 2011-06-29T14:25:59Z 2011-06-29T14:25:59Z 2009-11 2009-04 Article http://purl.org/eprint/type/JournalArticle http://hdl.handle.net/1721.1/64700 Ravela, Sai et al. "A realtime observatory for laboratory simulation of planetary flows." Experiments in Fluids (2010) 48.5, 915–925. https://orcid.org/0000-0001-9230-3591 en_US http://dx.doi.org/10.1007/s00348-009-0752-0 Experiments in Fluids Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Springer Science + Business Media B.V. |
| spellingShingle | Hill, Christopher N. Wong, Andrew Stransky, Scott Ravela, Sai Marshall, John C A realtime observatory for laboratory simulation of planetary flows |
| title | A realtime observatory for laboratory simulation of planetary flows |
| title_full | A realtime observatory for laboratory simulation of planetary flows |
| title_fullStr | A realtime observatory for laboratory simulation of planetary flows |
| title_full_unstemmed | A realtime observatory for laboratory simulation of planetary flows |
| title_short | A realtime observatory for laboratory simulation of planetary flows |
| title_sort | realtime observatory for laboratory simulation of planetary flows |
| url | http://hdl.handle.net/1721.1/64700 https://orcid.org/0000-0001-9230-3591 |
| work_keys_str_mv | AT hillchristophern arealtimeobservatoryforlaboratorysimulationofplanetaryflows AT wongandrew arealtimeobservatoryforlaboratorysimulationofplanetaryflows AT stranskyscott arealtimeobservatoryforlaboratorysimulationofplanetaryflows AT ravelasai arealtimeobservatoryforlaboratorysimulationofplanetaryflows AT marshalljohnc arealtimeobservatoryforlaboratorysimulationofplanetaryflows AT hillchristophern realtimeobservatoryforlaboratorysimulationofplanetaryflows AT wongandrew realtimeobservatoryforlaboratorysimulationofplanetaryflows AT stranskyscott realtimeobservatoryforlaboratorysimulationofplanetaryflows AT ravelasai realtimeobservatoryforlaboratorysimulationofplanetaryflows AT marshalljohnc realtimeobservatoryforlaboratorysimulationofplanetaryflows |