Climate Change and its Impact on Water Resources of Nepal
Pankaj Karna
Department of Hydrology
Indian Institute of Technology, Roorkee, India e-mail: pkj_karna@hotmail.com
Abstract— Climatic conditions of Nepal vary from one place to another in accordance with the geographical features. The country receives almost 80% of its annual rainfall during monsoon season. The current warming trend is of particular significance because most of it is very likely human-induced and proceeding at a rate that is unprecedented in the past 1,300 years. Climate change is changing our economy, health and communities in diverse ways. The effects of rising temperatures are not only melting glaciers and sea ice, it’s also shifting precipitation patterns and setting animals on the move. The main objective of the study is to identify the impacts of climate change on the development paradigm of the country in context of water resources. The prophecy behind this study is to add the future development of Nepal regarding poverty alleviation, social equity, security and welfare. The climate change trends and its impacts may differ in various local regions, it has affected Nepal with less monsoonal rains across the high mountains and more along the southern hills.
Keywords—component; formatting; style; styling; insert (key words)
I. INTRODUCTION
The Nepal, lies between latitude of 26° 15’ to 30° 30’ N and longitude of 80° 00’ to 88° 15’ E. The total area of 147 181 sq.km spans with varying widths
In addition, global climate change will exacerbate these challenges faced by countries and populations. Shifting precipitation patterns threaten to reduce water availability in some regions while inflicting stronger storms on others, increasing both potential droughts and floods. This may increase the frequency of more serious
In modern times, when individuals think about environmental problems, climate change seems to always be at the forefront. Whether people learned through the Paris Climate Accord or the internet about the devastating effects that a warming climate could bring, most of society can at least acknowledge that climate change is a hot political talking point. Because of this, more and more research has been focused on the effects that a changing climate could bring about. Research on the effects of climate change range from the percentage of carbon dioxide in the atmosphere and its effects on global temperatures, to the rate at which glacial ice is melting and sea level rise. This documentary, On Thin Ice, is concerned with the relationship between a warming climate and the rate at which the Gangotri Glacier has been melting over several years. This film discusses the different effects that a rapidly melting Gangotri has on water scarcity in Indian villages located downstream as well as the ways that Americans could be affected by this environmental phenomenon.
The earth’s climate has been changing and will continue to do so in the future. It is only going to keep on getting worse and it is getting to the point where humans will most likely end up in a situation of life threatening diseases and even death. Contagious diseases are spreading menacingly due to weather extremes as heat wave, droughts, cyclones, floods, and tornados (Dhaka). That is just the start of the effect of climate change and its consequences. Many scientists have already warned that millions of people would die in this century because of climate change unless the major reduction in greenhouse gas emissions is made (Dhaka). However, there are more than just reducing greenhouse gas emissions to help solve for climate change.
Global warming by shifting precipitation patterns away from humid areas and water pollution through agriculture uses of the fertilizers which runoff into the body of water together with improper sewage disposal (Problems and Solutions for the Ganges River, 2017).
In the words of Barack Obama, “climate change is no longer some far-off problem; it is happening here, it is happening now.” (J. S. World Economic Forum, 2015) This global phenomenon is causing many problems around the world and is affecting both developed countries like Canada and other countries in the process of developing. This report investigates how climate change can pose significant impacts on all countries despite economic stability. Places like Canada are affected by the severe storms and drastic changes in weather and these changes can hurt the environment and the economy. They can also pose threats to crop production and public health. Climate change can also hurt the developmental progression of low-income countries
The subjects of Agriculture and Rural Development, including Natural Resource Economics, will enable me to empirically assess patterns that nest within it like; the relationship between climate change and food insecurity in marginalized communities: The case of semi-arid areas in Malawi. Through this plan, I will be able to answer questions on the nexus between food security, water use and energy security, as well as the indicators of climate change in Malawi. The correlation between climate change, the levels of food insecurity in Malawi and rural development, will also be accorded an investigation
Water scarcity is a problem and will be a larger problem in the future . As the earth warms , regions currently receive an adequate supply of rain . The change
outstandingly each year causing Climate changes, elevation of water, loss of ice water, but most
Future climate data: Basic future climate data set for maximum and minimum temperature, precipitation was collected from WorldClim according to the IPPC5 climate projections from HadGEM2-ES global climate models (GCMs). Data were collected for two representative concentration pathways, that was 4.5 and 8.5. Time scale were 2050 (average for 2041-2060) and 2070 (average for 2061-2080). Here HadGEM2-ES earth system model was selected for both sites because this climate model includes all the climate change factor, component of ecosystem and hydrology cycle of the earth (Betts, 2015;
For instance, 85% of people located in East Timor are dependent upon agriculture for their income. To this extent, the resources and services they rely on are sensitive to climate change and thus, economic security is a concern. Furthermore, less or no rainfall in the dry season can determine reduced production of food, where the Timorese then have no alternative sources to food beyond their own produce, resulting in widespread deprivation and health insecurity (Barnett and Adger 2007, 640).
It is evident that the climate of the world is changing and has been since the creation of the earth but over that past decade the change had begun to occur more rapidly. With this occurrence of climate change is the occurrence of violent conflict among humans. In most parts of the world the climate change impacts social ecological systems such as temperature, sea level, and annual precipitation. Other occurrence have just increased in intensity and frequency such as floods, droughts, storms, cyclones, fires, heat-waves, epidemics and hurricanes. Yet these environmental changes do not undermine human security but they do assist in the use up of the natural resources that humans need to maintain the “normal” daily life and most importantly survive.
The three problems caused by climate change are, rise in sea level, varied energy demand, and water scarcity. Firstly, the impact on costal areas contributing to sea level rise has made low-lying cities vulnerable to them. Hunt and Watkiss (2011, p. 32) estimates that a 50 m raise in sea level would render Mumbai’s informal communities in severe despair. Moreover, climate change will lead to variation in energy demand. Hunt and Watkiss (2011, p. 33) explain even though winter heating will decrease due to warmer weather, cooling anticipated increasing in summer, increasing GHG
These weather events highlight one of the greatest threats to food security in Timor-Leste: climate change. With more than 80% of the Timorese population working as subsistence farmers (Williams et al., 2013), many families are at-risk as a result of their reliance on agricultural outputs. Predictions are that by 2050, Timor-Leste’s climate will become approximately 1.5°C hotter and 10% wetter and that the population is set to triple (Molyneux et al., 2012). This unprecedented increase in population size will place an even greater burden on an already strained food system. The sudden shift in weather patterns will also have an unpredictable impact on climate sensitive and socially essential resources such as soil and water (Barnett et al., 2007), as well as shocking coastal communities that are reliant on aquatic ecosystems (Valmonte-Santos et al., 2016).
Climate change does not only affect the environment and its natural resources but it also affects human health negatively, and the way in which people live. The effects of climate change includes warmer temperatures which not only increase intensity and duration of heat waves but also cause human health risks on the most vulnerable people, which are the elderly and young children. Drought results in shortage of water which ultimately has an impact on agricultural and farming activities. If more farming activities are stopped, the country will produce less exporting products having a negative impact on the economy. Spread of diseases due to bad water quality and poor air quality then increases rapidly affecting the health and mortality rate of the population concerned (Environmental Protection agency, 2016).
In many areas in Nepal, the history of climatology only dates back to 1956. Around this time, the Indian Meteorological Department instituted stations in various areas around the country, which were eventually taken over by the Nepalese government in 1966. Having these stations in place has given scientists significant insight into the Nepalese climate. However, some of the Indian equipment remained in the Nepalese stations, and unfortunately many Indian findings vary significantly from the Nepalese records of the same areas. Therefore, some information is unreliable, coupled by the fact that not all stations have operated since the start of the program (Thyer, 645).