Changes
On December 3, 2022 at 10:15:32 AM UTC, seanh:
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Changed title to CASIWAL Presentation NO.1 (previously CAIW交流报告_第一期)
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Moved CASIWAL Presentation NO.1 from http://115.29.142.79/dataset/zhongfen_1th to http://115.29.142.79/dataset/casiwal_1th
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2 | "author": "", | 2 | "author": "", | ||
3 | "author_email": "", | 3 | "author_email": "", | ||
4 | "creator_user_id": "2e9fa41b-0394-4070-98d0-205f79d5738b", | 4 | "creator_user_id": "2e9fa41b-0394-4070-98d0-205f79d5738b", | ||
5 | "extras": [], | 5 | "extras": [], | ||
6 | "groups": [ | 6 | "groups": [ | ||
7 | { | 7 | { | ||
n | 8 | "description": "Cryosphere Air-Ice-Water (CAIW) interactions, | n | 8 | "description": "Youth Group on Cryosphere |
9 | observation, modeling and process investigation seminar series | 9 | Air-Snow-Ice-Water-Land (CASIWAL) interactions, observation, modeling, | ||
10 | 8c\u8fc7\u7a0b\u7814\u7a76\u53ca\u5b66\u672f\u601d\u60f3\u4ea4\u6d41", | 10 | and process seminar series initiated by the cooperation with Polar and | ||
11 | Cryosphere. | ||||
12 | 62a5\u544a\u4fe1\u606f\uff1ahttp://115.29.142.79/group/casiwal\u3002", | ||||
11 | "display_name": "Cryosphere Air-Ice-Water (CAIW)", | 13 | "display_name": "Cryosphere Air-Snow-Ice-Water-Land (CASIWAL)", | ||
12 | "id": "300150f1-0aaf-42b4-8022-3dfca52e8b66", | 14 | "id": "300150f1-0aaf-42b4-8022-3dfca52e8b66", | ||
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n | 15 | "name": "zhongfen", | n | 17 | "name": "casiwal", |
16 | "title": "Cryosphere Air-Ice-Water (CAIW)" | 18 | "title": "Cryosphere Air-Snow-Ice-Water-Land (CASIWAL)" | ||
17 | } | 19 | } | ||
18 | ], | 20 | ], | ||
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22 | "license_title": "", | 24 | "license_title": "", | ||
23 | "maintainer": "", | 25 | "maintainer": "", | ||
24 | "maintainer_email": "", | 26 | "maintainer_email": "", | ||
25 | "metadata_created": "2022-01-20T03:26:28.420492", | 27 | "metadata_created": "2022-01-20T03:26:28.420492", | ||
n | 26 | "metadata_modified": "2022-01-21T13:38:12.222758", | n | 28 | "metadata_modified": "2022-12-03T10:15:32.757290", |
27 | "name": "zhongfen_1th", | 29 | "name": "casiwal_1th", | ||
28 | "notes": "Abstract\uff1a\r\nIn this study, sea ice concentration | 30 | "notes": "Abstract\uff1a\r\nIn this study, sea ice concentration | ||
29 | (SIC) budgets were calculated for five ocean-sea ice reanalyses (CFSR, | 31 | (SIC) budgets were calculated for five ocean-sea ice reanalyses (CFSR, | ||
30 | C-GLORSv7, GLORYS12v1, NEMO-EnKF and ORAS5), in the Southern Ocean and | 32 | C-GLORSv7, GLORYS12v1, NEMO-EnKF and ORAS5), in the Southern Ocean and | ||
31 | compared with observations. When applying the SIC budget diagnostics | 33 | compared with observations. When applying the SIC budget diagnostics | ||
32 | to decompose the changes in SIC into contributions from advection, | 34 | to decompose the changes in SIC into contributions from advection, | ||
33 | divergence, thermodynamics, deformation and data assimilation, we find | 35 | divergence, thermodynamics, deformation and data assimilation, we find | ||
34 | that the driving atmospheric and oceanic forcings are the most | 36 | that the driving atmospheric and oceanic forcings are the most | ||
35 | significant contributors on the budget differences. For the CFSR, the | 37 | significant contributors on the budget differences. For the CFSR, the | ||
36 | primary source of deviation compared to other reanalyses is the | 38 | primary source of deviation compared to other reanalyses is the | ||
37 | stronger northward component of surface-ocean current, which results | 39 | stronger northward component of surface-ocean current, which results | ||
38 | in stronger sea ice advection and divergence. These deviations are | 40 | in stronger sea ice advection and divergence. These deviations are | ||
39 | related to excessive freezing that results in an average CFSR sea ice | 41 | related to excessive freezing that results in an average CFSR sea ice | ||
40 | thickness being twice that of other reanalyses. The secondary source, | 42 | thickness being twice that of other reanalyses. The secondary source, | ||
41 | because Coriolis force is proportional to sea ice thickness, is the | 43 | because Coriolis force is proportional to sea ice thickness, is the | ||
42 | more northward velocity of free-drifting sea ice from the | 44 | more northward velocity of free-drifting sea ice from the | ||
43 | predominantly westerly winds and currents in the Antarctic Circumpolar | 45 | predominantly westerly winds and currents in the Antarctic Circumpolar | ||
44 | Current. In summary, this could be interpreted as a positive feedback | 46 | Current. In summary, this could be interpreted as a positive feedback | ||
45 | between sea ice thickness and northward sea ice transport. The other | 47 | between sea ice thickness and northward sea ice transport. The other | ||
46 | three reanalyses, C-GLORSv7, GLORYS12V1 and ORAS5, in contrast to the | 48 | three reanalyses, C-GLORSv7, GLORYS12V1 and ORAS5, in contrast to the | ||
47 | CFSR, underestimate the contribution of dynamics to changes in SIC | 49 | CFSR, underestimate the contribution of dynamics to changes in SIC | ||
48 | with respect to observations. The NEMO-EnKF, using NCEP as an | 50 | with respect to observations. The NEMO-EnKF, using NCEP as an | ||
49 | atmospheric forcing, has the largest zonal sea ice velocity among all | 51 | atmospheric forcing, has the largest zonal sea ice velocity among all | ||
50 | reanalyses, but compared to observations, the effect of the dynamics | 52 | reanalyses, but compared to observations, the effect of the dynamics | ||
51 | on sea ice change is also underestimated because the northward | 53 | on sea ice change is also underestimated because the northward | ||
52 | velocity and north-south velocity gradient are not large enough. | 54 | velocity and north-south velocity gradient are not large enough. | ||
53 | Another effect of excessively large wind speeds on the NEMO-EnKF is | 55 | Another effect of excessively large wind speeds on the NEMO-EnKF is | ||
54 | that they produce more sea ice convergence than other | 56 | that they produce more sea ice convergence than other | ||
55 | systems.\r\nshort-bio\uff1a\r\nYafei Nie is a PhD student from the | 57 | systems.\r\nshort-bio\uff1a\r\nYafei Nie is a PhD student from the | ||
56 | Ocean University of China (supervisor: Xianqing Lv), now visiting in | 58 | Ocean University of China (supervisor: Xianqing Lv), now visiting in | ||
57 | University of Helsinki (supervisor: Petteri Uotila). His research | 59 | University of Helsinki (supervisor: Petteri Uotila). His research | ||
58 | topics include ocean dynamics, sea-ice geophysics, data assimilation | 60 | topics include ocean dynamics, sea-ice geophysics, data assimilation | ||
59 | and ocean reanalysis.", | 61 | and ocean reanalysis.", | ||
60 | "num_resources": 1, | 62 | "num_resources": 1, | ||
61 | "num_tags": 0, | 63 | "num_tags": 0, | ||
62 | "organization": { | 64 | "organization": { | ||
63 | "approval_status": "approved", | 65 | "approval_status": "approved", | ||
64 | "created": "2020-04-30T11:11:08.802657", | 66 | "created": "2020-04-30T11:11:08.802657", | ||
65 | "description": "Aerospace Information Research Institute (AIR) | 67 | "description": "Aerospace Information Research Institute (AIR) | ||
66 | under the Chinese Academy of Sciences (CAS) was established in July | 68 | under the Chinese Academy of Sciences (CAS) was established in July | ||
67 | 2017, following the approval for consolidation of three CAS | 69 | 2017, following the approval for consolidation of three CAS | ||
68 | institutes: the Institute of Electronics (IECAS), the Institute of | 70 | institutes: the Institute of Electronics (IECAS), the Institute of | ||
69 | Remote Sensing and Digital Earth (RADI), and the Academy of | 71 | Remote Sensing and Digital Earth (RADI), and the Academy of | ||
70 | Opto-Electronics (AOE) at CAS President Board Meeting. The merger is | 72 | Opto-Electronics (AOE) at CAS President Board Meeting. The merger is | ||
71 | the outcome of CAS efforts towards reformation of its R&D system to | 73 | the outcome of CAS efforts towards reformation of its R&D system to | ||
72 | meet future R&D challenges and to better meet the national demands.", | 74 | meet future R&D challenges and to better meet the national demands.", | ||
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74 | "image_url": "2021-05-18-080509.992585AIRlogo.png", | 76 | "image_url": "2021-05-18-080509.992585AIRlogo.png", | ||
75 | "is_organization": true, | 77 | "is_organization": true, | ||
76 | "name": "air", | 78 | "name": "air", | ||
77 | "state": "active", | 79 | "state": "active", | ||
78 | "title": "Aerospace Information Research Institute, CAS", | 80 | "title": "Aerospace Information Research Institute, CAS", | ||
79 | "type": "organization" | 81 | "type": "organization" | ||
80 | }, | 82 | }, | ||
81 | "owner_org": "c25dce84-97be-4153-8b90-d38f9ab73e5f", | 83 | "owner_org": "c25dce84-97be-4153-8b90-d38f9ab73e5f", | ||
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t | 113 | "title": "CAIW\u4ea4\u6d41\u62a5\u544a_\u7b2c\u4e00\u671f", | t | 115 | "title": "CASIWAL Presentation NO.1", |
114 | "type": "dataset", | 116 | "type": "dataset", | ||
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117 | } | 119 | } |