Both seasonal and annual mean precipitation and evaporation influence patterns of water availability impacting society and ecosystems. Existing global climate studies rarely consider such patterns from non-parametric statistical standpoint. Here, we employ a non-parametric analysis framework to analyze seasonal hydroclimatic regimes by classifying global land regions into nine regimes using late 20th century precipitation means and seasonality. These regimes are used to assess implications for water availability due to concomitant changes in mean and seasonal precipitation and evaporation changes using CMIP5 model future climate projections. Out of 9 regimes, 4 show increased precipitation variation, while 5 show decreased evaporation variation coupled with increasing mean precipitation and evaporation. Increases in projected seasonal precipitation variation in already highly variable precipitation regimes gives rise to a pattern of “seasonally variable regimes becoming more variable”. Regimes with low seasonality in precipitation, instead, experience increased wet season precipitation.
We agree with Mark Carney, the former Bank of Canada and Bank of England governor, that transitioning the global economy to clean energy will take a concerted effort by the international community. Broad uptake of a global standard for climate related-financial disclosure is needed.
To weather the uncertainty of a global energy transition, businesses are going to need a much better understanding of their exposure to climate risks, particularly if they have heavy fossil fuel exposure. Riskthinking.Ai can help.
The timeline surrounding the development of an effective vaccine is just one of several uncertainties flagging COVID-19, which makes planning for the future difficult. Riskthinking.AI is developing scenarios tools for precisely this challenge.
India is particularly vulnerable to the effects of climate change. The hotter temperatures projected here will have a devastating impact on human health and wellbeing, as well as food security, and worker productivity.