Modeling the time-lag effect of sea surface temperatures on ciguatera poisoning in the South Pacific: Implications for surveillance and response

Toxicon ◽  
2020 ◽  
Vol 182 ◽  
pp. 21-29 ◽  
Author(s):  
Lingfeng Zheng ◽  
Clémence Mahana iti Gatti ◽  
Esther Garrido Gamarro ◽  
Aya Suzuki ◽  
Heng Yi Teah
Keyword(s):  
Time Lag ◽  
South Pacific ◽  
Sea Surface ◽  
Sea Surface Temperatures ◽  
The South ◽  
Surface Temperatures ◽  
Surveillance And Response ◽  
Lag Effect

scholarly journals Decadal predictability and prediction skill of sea surface temperatures in the South Pacific region

2020 ◽  
Vol 54 (9-10) ◽  
pp. 3945-3958 ◽  
Author(s):  
Ramiro I. Saurral ◽  
Javier García-Serrano ◽  
Francisco J. Doblas-Reyes ◽  
Leandro B. Díaz ◽  
Carolina S. Vera
Keyword(s):  
South Pacific ◽  
Sea Surface ◽  
Prediction Skill ◽  
Pacific Region ◽  
Sea Surface Temperatures ◽  
The South ◽  
Surface Temperatures ◽  
Decadal Predictability

scholarly journals Southern Hemisphere anticyclonic circulation drives oceanic and climatic conditions in late Holocene southernmost Africa

2017 ◽  
Vol 13 (6) ◽  
pp. 649-665 ◽  
Author(s):  
Annette Hahn ◽  
Enno Schefuß ◽  
Sergio Andò ◽  
Hayley C. Cawthra ◽  
Peter Frenzel ◽  
...  
Keyword(s):  
South Africa ◽  
Climatic Conditions ◽  
Sea Surface ◽  
South Coast ◽  
Ice Age ◽  
Sea Surface Temperatures ◽  
The South ◽  
Anticyclonic Circulation ◽  
Surface Temperatures ◽  
Precipitation Regimes

Abstract. Due to the high sensitivity of southern Africa to climate change, a reliable understanding of its hydrological system is crucial. Recent studies of the regional climatic system have revealed a highly complex interplay of forcing factors on precipitation regimes. This includes the influence of the tropical easterlies, the strength of the southern hemispheric westerlies as well as sea surface temperatures along the coast of the subcontinent. However, very few marine records have been available in order to study the coupling of marine and atmospheric circulation systems. Here we present results from a marine sediment core, recovered in shallow waters off the Gouritz River mouth on the south coast of South Africa. Core GeoB18308-1 allows a closer view of the last  ∼  4 kyr. Climate sensitive organic proxies, like the distribution and isotopic composition of plant-wax lipids as well as indicators for sea surface temperatures and soil input, give information on oceanographic and hydrologic changes during the recorded time period. Moreover, the micropaleontology, mineralogical and elemental composition of the sediments reflect the variability of the terrigenous input to the core site. The combination of down-core sediment signatures and a catchment-wide provenance study indicate that the Little Ice Age ( ∼  300–650 cal yr BP) was characterized by climatic conditions favorable to torrential flood events. The Medieval Climate Anomaly ( ∼  950–650 cal yr BP) is expressed by lower sea surface temperatures in the Mossel Bay area and humid conditions in the Gouritz River catchment. These new results suggest that the coincidence of humid conditions and cooler sea surface temperatures along the south coast of South Africa resulted from a strengthened and more southerly anticyclonic circulation. Most probably, the transport of moisture from the Indian Ocean by strong subtropical easterlies was coupled with Agulhas Bank upwelling pulses, which were initiated by an increase in Agulhas Current strength.

scholarly journals Sea surface temperatures at Millport

1959 ◽  
Vol 38 (2) ◽  
pp. 423-424 ◽  
Author(s):  
H. Barnes
Keyword(s):  
The State ◽  
Sea Surface ◽  
Sea Surface Temperatures ◽  
Not Given ◽  
The South ◽  
The Past ◽  
Surface Temperatures ◽  
Inshore Waters

Sea surface temperatures have been taken daily at Keppel Pier, Millport (55° 44‘ 55“ N. lat.; 4° 54’ 20” W. long.), for the past 10 years (1949–58), the data being included in returns to the Meteorological Office. The records are not given in their standard publication and they are, therefore, presented here to supplement those of Cooper (1958) for inshore waters at Plymouth some 400 miles farther to the south. For some years the samples were drawn in a specially constructed container fitted with a Fahrenheit thermometer which was read to the nearest whole degree; more recently the bucket method has been used, and a centigrade thermometer graduated in degrees and read to an estimated tenth of a degree. The two methods were checked against each other before the change was made and the results found to be consistent. All readings were taken at 09.00 h G.M.T., irrespective of the state of the tide. The results are shown in Table 1.

scholarly journals Sea surface temperatures in the South China Sea as a natural thermostat to the rainfall over Borneo: preliminary results

2021 ◽  
Vol 925 (1) ◽  
pp. 012009
Author(s):  
Y S Djamil ◽  
R K Lestari ◽  
X Wang
Keyword(s):  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Sea Surface ◽  
Sea Surface Temperatures ◽  
The South ◽  
Climate System Model ◽  
China Sea ◽  
Model Version ◽  
Surface Temperatures

Abstract Community Climate System Model version 4 (CCSM4) simulated warmer sea surface temperatures (SSTs) in the South China Sea (SCS) for the mid-Holocene scenario compared to the pre-Industrial. Previous sensitivity experiments using the atmospheric component of the CCSM4, the Community Atmospheric Model version 4 (CAM4), showed that warmer SSTs in the SCS suppresses rainfall over Borneo, which is in-contrary to the effect of the stronger insolation over the island. In this study, we show that warmer SSTs in the SCS, as simulated in the CCSM4, is responding to a weaker low-level wind impacted by the stronger convectional rainfall over Borneo due to stronger insolation. These results suggest that warmer SSTs in the SCS might act as a negative feedback which damps the effect of the stronger insolation on rainfall changes over Borneo.

scholarly journals What Determines the Position and Intensity of the South Atlantic Anticyclone in Austral Winter?—An AGCM Study

2008 ◽  
Vol 21 (2) ◽  
pp. 214-229 ◽  
Author(s):  
Ingo Richter ◽  
Carlos R. Mechoso ◽  
Andrew W. Robertson
Keyword(s):  
General Circulation ◽  
Large Scale ◽  
Circulation Model ◽  
South Atlantic ◽  
Sea Surface ◽  
Sea Surface Temperatures ◽  
Model Errors ◽  
Austral Winter ◽  
The South ◽  
Surface Temperatures

Abstract The South Atlantic anticyclone is a major feature of the austral winter climatology. An atmospheric general circulation model (AGCM) is used to study the dynamics of the South Atlantic anticyclone by means of control simulations and experiments to investigate sensitivity to prescribed orography, sea surface temperatures, and soil wetness. The South Atlantic anticyclone in the first control simulation is unrealistically zonally elongated and centered too far west—errors typical of coupled ocean–atmosphere GCMs. Results of the sensitivity experiments suggest that these deficiencies are associated with another family of systematic model errors: the overprediction of convection over the tropical land surfaces, particularly over eastern tropical Africa and India, and the concurrent large-scale westward shift in the divergence center at upper levels and the convergence center at lower levels. The results also confirm the important role of South American and African orography in localizing the South Atlantic anticyclone over the ocean. Other factors, however, like the regional zonal gradients of sea surface temperatures, are found to have only a minor impact on the anticyclone. To further substantiate these findings, the wintertime anticyclone is examined using a revised version of the atmospheric GCM. Improvements are found in both the anticyclone as well as the Asia–African summer monsoon circulations. The results demonstrate the existence of links between intensity and structure of the wintertime South Atlantic anticyclone and the major summer monsoons in the Northern Hemisphere.

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