Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension
The interparcel mixing algorithm in the Lagrangian advection scheme with shape matrix (LASM) is updated to make the scheme more robust. The linear degeneration criterion is replaced by the maximum deviation of the skeleton points so that the new algorithm is more effective in controlling the shape o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-08-01
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| Series: | Geoscientific Model Development |
| Online Access: | http://www.geosci-model-dev.net/8/2675/2015/gmd-8-2675-2015.pdf |
| _version_ | 1828157627647918080 |
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| author | L. Dong B. Wang L. Liu Y. Huang |
| author_facet | L. Dong B. Wang L. Liu Y. Huang |
| author_sort | L. Dong |
| collection | DOAJ |
| description | The interparcel mixing algorithm in the Lagrangian advection scheme with
shape matrix (LASM) is updated to make the scheme more robust. The linear
degeneration criterion is replaced by the maximum deviation of the skeleton
points so that the new algorithm is more effective in controlling the shape
of parcels, which is vital for long time simulation. LASM is inherently
shape-preserving without any complicated filter or limiter, and it is linear.
This fact contributes to the ability to preserve the sum of multiple
tracers exactly on the parcels in LASM. A newly proposed terminator
"toy"-chemistry test is used to test LASM, which shows that LASM can
preserve the weighted sum of two reactive species precisely. The
physics–dynamics coupling (i.e., tendency evaluation type) is also discussed.
A flow generated by a WRF large-eddy simulation is also used to test the 3-D
extension of LASM. |
| first_indexed | 2024-04-11T23:31:47Z |
| format | Article |
| id | doaj.art-f8541288e5664a9fa842d5c14e7bfcdc |
| institution | Directory Open Access Journal |
| issn | 1991-959X 1991-9603 |
| language | English |
| last_indexed | 2024-04-11T23:31:47Z |
| publishDate | 2015-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj.art-f8541288e5664a9fa842d5c14e7bfcdc2022-12-22T03:57:06ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032015-08-01882675268610.5194/gmd-8-2675-2015Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extensionL. Dong0B. Wang1L. Liu2Y. Huang3LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, ChinaLASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, ChinaMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science (CESS), Tsinghua University, Beijing, ChinaLACS, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, ChinaThe interparcel mixing algorithm in the Lagrangian advection scheme with shape matrix (LASM) is updated to make the scheme more robust. The linear degeneration criterion is replaced by the maximum deviation of the skeleton points so that the new algorithm is more effective in controlling the shape of parcels, which is vital for long time simulation. LASM is inherently shape-preserving without any complicated filter or limiter, and it is linear. This fact contributes to the ability to preserve the sum of multiple tracers exactly on the parcels in LASM. A newly proposed terminator "toy"-chemistry test is used to test LASM, which shows that LASM can preserve the weighted sum of two reactive species precisely. The physics–dynamics coupling (i.e., tendency evaluation type) is also discussed. A flow generated by a WRF large-eddy simulation is also used to test the 3-D extension of LASM.http://www.geosci-model-dev.net/8/2675/2015/gmd-8-2675-2015.pdf |
| spellingShingle | L. Dong B. Wang L. Liu Y. Huang Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension Geoscientific Model Development |
| title | Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension |
| title_full | Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension |
| title_fullStr | Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension |
| title_full_unstemmed | Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension |
| title_short | Lagrangian advection scheme with shape matrix (LASM) v0.2: interparcel mixing, physics–dynamics coupling and 3-D extension |
| title_sort | lagrangian advection scheme with shape matrix lasm v0 2 interparcel mixing physics dynamics coupling and 3 d extension |
| url | http://www.geosci-model-dev.net/8/2675/2015/gmd-8-2675-2015.pdf |
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