| The impact of northern Indian Ocean rivers on the Bay of Bengal using NEMO global ocean model |
| |
| 作者姓名： | Srivastava Atul Gera Anith Momin Imran M. Mitra Ashis Kumar Gupta Ankur |
| |
| 作者单位： | National Centre for Medium Range Weather Forecasting, Noida 201309, India;Jaypee University Anoopshahr, Bulandshahr 203309, India,National Centre for Medium Range Weather Forecasting, Noida 201309, India,National Centre for Medium Range Weather Forecasting, Noida 201309, India,National Centre for Medium Range Weather Forecasting, Noida 201309, India,National Centre for Medium Range Weather Forecasting, Noida 201309, India |
| |
| 基金项目： | MOES-NERC Bay of Bengal BLE project. |
| |
| 摘 要： | The effect of river runoff over the northern Indian Ocean(NIO) especially over the Bay of Bengal(Bo B) has been studied using global Nucleus for European Modelling of the Ocean(NEMO). Two sensitivity experiments, with and without river runoff are conducted and the influence of river runoff on the Indian Ocean hydrography,stratification and circulation features are studied. It is found that due to river runoff surface salinity over the northern Bo B decreases by more than 5 and the East India Coastal Current strengthens by 2 cm/s during post monsoon season. The fresh river water reaches up to 15°N in the Bo B and is the main cause for low salinity there.Sea surface temperature in the northwestern Bo B increases by more than 0.2℃ due to the river runoff in summer monsoon while surface cooling upto 0.2℃ is seen in north-west part of Bo B in winter season. The seasonal mixed layer depth in the region is found to be dependent on river runoff. The effect of vertical shear and Brunt Vaisala frequency on stratification is also examined. The ocean water becomes highly stratified up to 3 035 m due to the river runoff. It is found that the energy required for mixing is high in the northern and coastal Bo B.
|
| 关 键 词： | BAY of BENGAL sea surface temperature SALINITY mixed layer depth STRATIFICATION |
| 收稿时间： | 2019/2/22 0:00:00 |
The impact of northern Indian Ocean rivers on the Bay of Bengal using NEMO global ocean model |
| |
| Srivastava Atul,Gera Anith,Momin Imran M.,Mitra Ashis Kumar,Gupta Ankur.The impact of northern Indian Ocean rivers on the Bay of Bengal using NEMO global ocean model[J].Acta Oceanologica Sinica,2020,39(3):45-55. |
| |
| Authors: | Srivastava Atul Gera Anitha Momin Imran M Mitra Ashis Kumar Gupta Ankur |
| |
| Institution: | 1.National Centre for Medium Range Weather Forecasting, Noida 201309, India2.Jaypee University Anoopshahr, Bulandshahr 203309, India |
| |
| Abstract: | Acta Oceanologica Sinica - The effect of river runoff over the northern Indian Ocean (NIO) especially over the Bay of Bengal (BoB) has been studied using global Nucleus for European Modelling of... |
| |
| Keywords: | Bay of Bengal sea surface temperature salinity mixed layer depth stratification |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
