As the Earth’s atmosphere warms, the atmospheric circulation changes. These changes vary by region and time of year, but there is evidence that anthropogenic warming causes a general weakening of summertime tropical circulation. Because tropical cyclones are carried along within their ambient environmental wind, there is a plausible a priori expectation that the translation speed of tropical cyclones has slowed with warming.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/global-slowdown-tropical-cyclone-translation-speed
[2] http://admin.indiaenvironmentportal.org.in/category/author/james-p-kossin
[3] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cyclones
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall-pattern
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/north-pacific-ocean
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/australia
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hurricanes
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-ocean
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/north-atlantic-ocean