Coastal flood mapping associated with tropical cyclone induced extreme water elevations is carried out for the Gujarat and North Maharashtra coasts in the perspective of climate projections for the Arabian Sea. The projections are taken into account by enhancing the present cyclone wind intensity by 7% and 11% based on the IPCC fifth assessment report to study its impact on extreme water elevations and coastal flooding. The coupled ADCIRC + SWAN model is used in this study to map the maximum water elevations resulting from storm surges, astronomical tides, and wind-waves by utilizing the most probabilistic cyclone tracks generated for this region. Results from the study signifies that extreme water elevations ranging between 9.0 and 9.5 m are evident in the Gulf of Khambhat and Kutch under no-climate change scenario, while it enhances to a maximum of 10.0–11.0 m under climate change projections. Maximum extent of coastal inundation is found in the low-lying regions of Great and Little Rann of Kutch, Mumbai, and high-tide mudflats of Bhavnagar. It is notable that climate projections have maximum impact on inundation height, while it is marginal in terms of risk associated with the additional inundation extent.

从阿拉伯海的气候预测角度，对古吉拉特邦和北马哈拉施特拉邦海岸进行了与热带气旋引起的极端水位升高相关的沿海洪水测绘。根据IPCC的第五次评估报告，通过将当前的气旋风强度分别提高7％和11％来研究这些预测，以研究其对极端水位升高和沿海洪水的影响。本研究中使用ADCIRC + SWAN耦合模型，通过利用该地区产生的概率最大的气旋航迹来绘制由风暴潮，天文潮汐和风浪产生的最大水位图。该研究结果表明，在无气候变化的情况下，Khambhat海湾和Kutch的极端水位明显在9.0至9.5 m之间，在气候变化预测下，其最大增加量为10.0-11.0 m。在孟买的库奇的Great and Little Rann低洼地区和Bhavnagar的高潮滩涂地区发现沿海淹没的程度最大。值得注意的是，气候预测对淹没高度的影响最大，而与额外淹没程度相关的风险而言则微不足道。