東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Sea ice climatology, variations and ...

Liu, Jiping.

FindBook

Google Book

Amazon

博客來

Sea ice climatology, variations and teleconnections: Observational and modeling studies.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Sea ice climatology, variations and teleconnections: Observational and modeling studies./
作者:	Liu, Jiping.
面頁冊數:	140 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0768.
Contained By:	Dissertation Abstracts International64-02B.
標題:	Physics, Atmospheric Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3080822

Sea ice climatology, variations and teleconnections: Observational and modeling studies.
Liu, Jiping.

Sea ice climatology, variations and teleconnections: Observational and modeling studies. - 140 p.

Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0768.

Thesis (Ph.D.)--Columbia University, 2003.

Hypotheses, models and observations suggest that sea ice plays an important role in the local, regional and global climate through a variety of processes across a full range of scales. However, our documentation and understanding of the nature of the polar-extrapolar climate teleconnections and their underlying causal and mechanistic links are still rudimentary, and the largest disagreements among model simulations of present and future climate are in the polar regions.Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

Sea ice climatology, variations and teleconnections: Observational and modeling studies.
LDR:03597nmm 2200313 4500 001 1810261
005 20040126131515.5
008 130610s2003 eng d
035 $a (UnM)AAI3080822
035 $a AAI3080822
040 $a UnM $c UnM
100 1 $a Liu, Jiping. $3 1899881
245 1 0 $a Sea ice climatology, variations and teleconnections: Observational and modeling studies.
300 $a 140 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0768.
500 $a Advisers: Douglas G. Martinson; David H. Rind.
502 $a Thesis (Ph.D.)--Columbia University, 2003.
520 $a Hypotheses, models and observations suggest that sea ice plays an important role in the local, regional and global climate through a variety of processes across a full range of scales. However, our documentation and understanding of the nature of the polar-extrapolar climate teleconnections and their underlying causal and mechanistic links are still rudimentary, and the largest disagreements among model simulations of present and future climate are in the polar regions.
520 $a In an effort to address these issues, we evaluated the simulated Antarctic sea ice variability and its climate teleconnections in three coupled global climate models (GISS, NCAR and GFDL) as compared to the observations. All the models capture the El Niño-Southern Oscillation (ENSO)-like phenomenon to some degree, although almost all the models miss some observed linkages. The GISS and NCAR models also capture the observed Antarctic Dipole and meridional banding structure through the Pacific. The Antarctic sea ice regions showing the strongest sensitivity to global teleconnections differ among the models and between the models and observations. We then proposed that the changes of the regional mean meridional atmospheric circulation (the regional Ferrel Cell) are one such mechanism leading to the covariability of the ENSO and Antarctic Dipole by modulating the mean meridional heat flux using the observational data.
520 $a To more accurately represent sea ice simulations and associated feedbacks with the atmosphere and the ocean, the GISS coupled model was used to investigate the sensitivity of sea ice to the following physical parameterizations: (a) two sea ice dynamics (cavitating fluid and viscous-plastic), (b) the specification of oceanic isopyncal mixing coefficients in the Gent and McWillams isopyncal mixing, (c) the Wajsowicz viscosity diffusion, (d) surface albedo, (e) the penetration of solar radiation in sea ice, (f) effects of including a sea ice salinity budget, and (g) the ice-ocean boundary interactions. The atmospheric responses associated with sea ice changes were discussed. Based on these experiments, a series of composite experiments with the aforementioned parameterizations were also investigated. While improvements are seen overall, there are some unrealistic aspects that will require further improvements to the sea ice and ocean components. Finally, the GISS coupled model's ability to represent observed Antarctic sea ice variability and its global teleconnections was re-evaluated in a composite run with the improved sea ice and ocean processes.
590 $a School code: 0054.
650 4 $a Physics, Atmospheric Science. $3 1019431
650 4 $a Physical Oceanography. $3 1019163
650 4 $a Geophysics. $3 535228
690 $a 0608
690 $a 0415
690 $a 0373
710 2 0 $a Columbia University. $3 571054
773 0 $t Dissertation Abstracts International $g 64-02B.
790 1 0 $a Martinson, Douglas G., $e advisor
790 1 0 $a Rind, David H., $e advisor
790 $a 0054
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3080822