JpGU Meeting 2019
Session outline| Atmospheric and Hydrospheric Sciences (A) | ||
|---|---|---|
| Session Sub-category | Ocean Sciences & Ocean Environment(OS) | |
| Session ID | A-OS10 | |
| Title | Atlantic climate variability, and its global impacts and predictability | |
| Short Title | Atlantic climate variability | |
| Main Convener | Name | Ingo Richter |
| Affiliation | JAMSTEC Japan Agency for Marine-Earth Science and Technology | |
| Co-Convener 1 | Name | Hiroki Tokinaga |
| Affiliation | Disaster Prevention Research Institute, Kyoto University | |
| Co-Convener 2 | Name | Noel S Keenlyside |
| Affiliation | Geophysical Institute Bergen | |
| Co-Convener 3 | Name | Carlos R Mechoso |
| Affiliation | University of California Los Angeles | |
| Session Language | E | |
| Scope | The Atlantic Ocean is subject to pronounced climate variations that occur on a wide range of time scales, including interannual variability in the equatorial and subtropical regions, and Atlantic multi-decadal variability (AMV), which has been linked with the Atlantic meridional overturning circulation (AMOC). These are connected to other climate variations across the globe. The AMV, e.g., has long been known to have global impacts, such as changes in the Indian, Asian and South American summer monsoons, and changes in the Pacific associated with the "global hiatus". Interannual variability in the equatorial and subtropical Atlantic has also been shown to influence global climate, including over Asia, while the freshening of the North Atlantic by melting of the Greenland ice cap is expected to influence all ocean basins via atmospheric bridges. Likewise, misrepresentation of the Atlantic can have global ramifications in climate models. Misrepresentation of the AMOC, e.g., has been associated with model biases in the entire Northern Hemisphere. This session seeks observational, modeling, and theoretical studies on the mechanisms that determine the Atlantic mean climate and variability, as well as the predictability and global impacts of such variability. We also seek studies that evaluate climate model performance in the region. Topics include atmosphere-ocean-cloud interactions in the tropical Atlantic and their remote impacts; relationships between tropical and mid/high latitude variability; air-sea interaction along the Gulf Stream and its influence on cyclones and storm track evolution; variability in the Benguela upwelling region; influence of Agulhas leakage on the South Atlantic; coupled climate models biases in the region and their impacts; AMOC and long-term climate change. | |
| Presentation Format | Oral and Poster presentation | |
| Invited Authors | Xichen Li (Institute of Atmospheric Physics) Belen Rodriguez-Fonseca (Departamento de Fisica de la Tierra y Astrofisica. Facultad de Fisicas. Universidad Complutense de Madrid. Instituto de Geociencias IGEO, CSIC UCM, Spain) | |
| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 30 AM1 | ||||
| 09:00 - 09:15 | AOS10-01 | Atlantic impacts on the tropical Pacific climate in the 2000s | Takashi Mochizuki | |
| 09:15 - 09:30 | AOS10-02 | Recent acceleration of Arabian Sea warming induced by the Atlantic-western Pacific trans-basin multidecadal variability | Cheng Sun | |
| 09:30 - 09:45 | AOS10-03 | Westward Wind Changes over the Tropical and Mid-latitude Pacific in the Past Three Decades Driven by the Inter-basin Teleconnections | Xichen Li | |
| 09:45 - 10:00 | AOS10-04 | On the Usefulness of the Atlantic Multidecadal Oscillation Index for Identifying Origins of North Atlantic Sea Surface Temperature Variability | Jing Sun | |
| 10:00 - 10:15 | AOS10-05 | Atlantic Multidecadal SST Signal Modulated by the Low-Frequency Mixed Layer Depth Variability | Ayako Yamamoto | |
| 10:15 - 10:30 | AOS10-06 | A High-Resolution Future Wave Climate Projection for the Northwestern Atlantic | Adrean Webb | |
| Oral Presentation May 30 AM2 | ||||
| 10:45 - 11:00 | AOS10-07 | Tropical Atlantic Impact on ENSO predictability | Belen Rodriguez-Fonseca | |
| 11:00 - 11:15 | AOS10-08 | Interannual variability of Antarctic Intermediate Water in the tropical North Atlantic | Yao Fu | |
| 11:15 - 11:30 | AOS10-09 | Understanding the mechanisms of the Atlantic meridional climate variability | Hyacinth C Nnamchi | |
| 11:30 - 11:45 | AOS10-10 | The corss-equatorical gradient variability: The role of heat, momentum, and freshwater flux | Takahito Kataoka | |
| 11:45 - 12:00 | AOS10-11 | Generation mechanisms of the Benguela Nino with a focus on local amplification | Tomoki Tozuka | |
| 12:00 - 12:15 | AOS10-12 | Seasonal energy analysis for baroclinic waves in equatorial Atlantic through a diagnostic scheme for energy flux | Qingyang Song | |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 30 PM2 | |||
| AOS10-P01 | The strengthening of Amazonian precipitation during the wet season driven by tropical sea surface temperature forcing | Xinyue Wang | |
| AOS10-P02 | Linear inverse modeling of the tropical Atlantic | Ingo Richter | |
| AOS10-P03 | Relationships Among Inter-model Spread and Biases in Tropical Atlantic Sea Surface Temperatures | Belen Rodriguez-Fonseca | |
| AOS10-P04 | Revisiting the CMIP5 Thermocline in the Equatorial Pacific and Atlantic Oceans | Belen Rodriguez-Fonseca | |
| AOS10-P05 | Lagged Effects of North Atlantic SST Anomalies on Weather in Remote Areas | Natalia Gnatiuk | |
| AOS10-P06 | SST anomalies in the northern tropical Atlantic as a negative feedback to ENSO development | Ingo Richter | |