Relative Roles of Large and Small Scales in Simulation of Mesoscale Events
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
Relative Roles of Large and Small Scales in Simulation of Mesoscale Events
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| Creator |
Goswami, P
S, Himesh |
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| Subject |
Climate Modelling
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| Description |
The limited domain, and the associated artificial lateral boundaries, introduces several aspects to simulation with
Limited Area Models (LAM). The size of the domain in a LAM implicitly determines the largest scale in model
dynamics. Thus, domain size and resolution (smallest resolved scale) together determine the spectrum of resolved
scales and nature of scale interaction in the model dynamics. A quantitative estimate of role of domain size in limited
area simulation is, however, lacking. We investigate this issue using a mesoscale model (MM5) with respect to an
extreme rainfall event. Simulations (5-lead ensemble) were carried out for seven different domains and three
resolutions (90, 60 and 30km) with otherwise identical configurations. Our results show that along with resolution the
size of the domain also significantly affects quantities like total and maximum precipitation. While the quantitative
aspects of this conclusion are likely to change based on type and location of the event, the results show that both
ends of the spectrum of scales play significant roles in model dynamics of mesoscale simulation.
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| Publisher |
CSIR Centre for Mathematical Modelling and Computer Simulation
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| Date |
2007
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| Type |
Monograph
NonPeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cir.cmmacs.ernet.in/267/1/rrcm0712.pdf
Goswami, P and S, Himesh (2007) Relative Roles of Large and Small Scales in Simulation of Mesoscale Events. Technical Report. CSIR Centre for Mathematical Modelling and Computer Simulation, C-MMACS,Bangalore 560037,India. (Unpublished) |
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| Relation |
http://cir.cmmacs.ernet.in/267/
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