scholarly journals Impact of global warming (1.5ºC) on the productivity of selected C3 and C4 crops across Tamil Nadu

2021 ◽  
Vol 22 (1) ◽  
pp. 7-17
Author(s):  
R. GOWTHAM ◽  
K. BHUVANESHWARI ◽  
A. SENTHIL ◽  
M. DHASARATHAN ◽  
AROMAR REVI ◽  
...  
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Tamil Nadu ◽  
Rice Yield ◽  
Climate Change Impacts ◽  
Crop Phenology ◽  
Maize Productivity ◽  
C4 Pathway ◽  
Rcp 8.5 ◽  
Negative Impacts

Over the last century, mean annual temperatures increased by ~1°C. UNFCCC has proposed to limit warming below 1.5°C relative to pre-industrial levels. A study was conducted on rice (C3 pathway) and maize (C4 pathway) over Tamil Nadu using DSSAT to understand the climate change impacts with projected temperature increase of 1.5°C.The future climate under RCP 4.5 and RCP 8.5 indicated 1.5°Cincrease in temperature to happen by 2053 and 2035, respectively over Tamil Nadu.Annual rainfall deviations in RCP4.5 showed drier than current condition and RCP8.5 projected wetter SWM and drier NEM (90 % of current rainfall).Impact of 1.5°C warming on crop phenology indicated 8 days reduction in duration for rice and maize. The W UE of rice would decrease by 17 per cent at current CO2 whereas, enrichment (430 ppm) would reduce by12 per cent and rice yield is reduced by 21 per cent with 360 ppm CO2 and 430 ppm reducedby 17 per cent. There is no considerable varaition (- 5 to 1 %) in maize productivity with 1.5 ºC warming. The above results indicated that 1.5 ºC warming has more negative impacts on plants with C3 compared to C4 pathway

Climate Change Impacts on Agriculture in Latin America and the Caribbean: An Application of the Integrated Economic-Environmental Modeling (IEEM) Platform

2021 ◽  
Author(s):  
Onil Banerjee ◽  
Martin Cicowiez ◽  
Ana Rios ◽  
Cicero De Lima
Keyword(s):  
Climate Change ◽  
Labor Productivity ◽  
Latin American ◽  
Climate Change Impacts ◽  
Crop Productivity ◽  
Environmental Modeling ◽  
Sectoral Output ◽  
The Caribbean ◽  
Negative Impacts ◽  
Agricultural Yields

In this paper, we assess the economy-wide impact of Climate Change (CC) on agriculture and food security in 20 Latin American and the Caribbean (LAC) countries. Specifically, we focus on the following three channels through which CC may affect agricultural and non-agricultural production: (i) agricultural yields; (ii) labor productivity in agriculture, and; (iii) economy-wide labor productivity. We implement the analysis using the Integrated Economic-Environmental Model (IEEM) and databases for 20 LAC available through the OPEN IEEM Platform. Our analysis identifies those countries most affected according to key indicators including Gross Domestic Product (GDP), international commerce, sectoral output, poverty, and emissions. Most countries experience negative impacts on GDP, with the exception of the major soybean producing countries, namely, Brazil, Argentina and Uruguay. We find that CC-induced crop productivity and labor productivity changes affect countries differently. The combined impact, however, indicates that Belize, Nicaragua, Guatemala and Paraguay would fare the worst. Early identification of these hardest hit countries can enable policy makers pre-empting these effects and beginning the design of adaptation strategies early on. In terms of greenhouse gas emissions, only Argentina, Chile and Uruguay would experience small increases in emissions.

scholarly journals Maxent modeling for predicting the potential distribution of Arbutus andrachne L. belonging to climate change in Turkey.

2021 ◽  
Vol 48 (2) ◽  
Author(s):  
Ayse Gul Sarikaya ◽  
◽  
Omer K. Orucu ◽  
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Potential Distribution ◽  
Climate Change Scenarios ◽  
Small Tree ◽  
Potential Habitat ◽  
Northern Areas ◽  
Maxent Modeling ◽  
Rcp 8.5 ◽  
Turkish Flora

Arbutus andrachne L., the strawberry tree, is an evergreen shrub or small tree in the Turkish flora and has broad uses. The wood is used for decorative purposes, packaging, and manufacturing furniture. The fruits are edible and used in treating many kinds of diseases. However, global warming might affect the abundance of this symbolic plant's distribution, especially at higher latitudes. This study was conducted to determine the expected effects of climate change on A. andrachne. For this purpose, Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 were used to expect climate change scenarios for 2050 and 2070, and potential distribution areas of A. andrachne were presented. The results indicated that the distribution of A. andrachne would decrease in the southern regions of Turkey. However, the spread of the species could be expanded in the western and northern areas. It is also expected that there would be potential habitat losses, which would affect the distribution of A. andrachne.

Introduction

2021 ◽  
pp. 1-10
Author(s):  
Eelco J. Rohling
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Greenhouse Gases ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Emission Reduction ◽  
Climate Change Impacts ◽  
Paris Agreement ◽  
Gas Emissions ◽  
Is Implementation

This chapter outlines the challenge facing us. The Paris Agreement sets a target maximum of 2°C global warming and a preferred limit of 1.5°C. Yet, the subsequent combined national pledges for emission reduction suffice only for limiting warming to roughly 3°C. And because most nations are falling considerably short of meeting their pledges, even greater warming may become locked in. Something more drastic and wide-ranging is needed: a multi-pronged strategy. These different prongs to the climate-change solution are introduced in this chapter and explored one by one in the following chapters. First is rapid, massive reduction of greenhouse gas emissions. Second is implementation of ways to remove greenhouse gases from the atmosphere. Third may be increasing the reflectivity of Earth to incoming sunlight, to cool certain places down more rapidly. In addition, we need to protect ourselves from climate-change impacts that have already become inevitable.

scholarly journals Exploring climate change impacts during first half of the 21st century on flow regime of the transboundary Kabul River in the Hindukush region

2019 ◽  
Vol 11 (4) ◽  
pp. 1521-1538
Author(s):  
Muhammad Zia ur Rahman Hashmi ◽  
Amjad Masood ◽  
Haris Mushtaq ◽  
Syed Ahsan Ali Bukhari ◽  
Burhan Ahmad ◽  
...  
Keyword(s):  
Climate Change ◽  
Flow Regime ◽  
Climate Change Impacts ◽  
River System ◽  
Joint Strategy ◽  
Rcp 8.5 ◽  
High Level ◽  
Flooding Events ◽  
Kabul River ◽  
Far Future

Abstract In transboundary river basins, climate change is being considered as a concern of higher degree than it is in other parts of the world. The Kabul River Basin, a sub-basin of the Indus River system shared by Pakistan and Afghanistan, is no exception. High level of sensitivity of its flow to temperature makes it imperative to analyse climate change impacts on the flow regime of this important river for efficient water resources management on both sides of the border. The snowmelt runoff model integrated with remote sensing snow cover product MODIS was selected to simulate daily discharges. Future projections were generated for two selected time slices, 2011–2030 (near future) and 2031–2050 (far future), based on output of an ensemble of four GCMs' RCP 4.5 and RCP 8.5 scenarios. Analysis shows a significant temperature increase under both scenarios in the near and far future at a high-altitude region of the basin which mostly receives snowfall that is also found increasing over time. Consequently, it causes a change in the flow regime and more frequent and heavier flooding events, thus calling for a joint strategy of the two riparian countries to mitigate the anticipated impacts in the basin for safety of people and overall prosperity.

Integrated Assessment of Climate Change Impacts on Corn Yield in the U.S. Using a Crop Model

2017 ◽  
Vol 60 (6) ◽  
pp. 2123-2136
Author(s):  
Kenichi Tatsumi
Keyword(s):  
Climate Change ◽  
General Circulation ◽  
Climate Change Impacts ◽  
General Circulation Models ◽  
Crop Model ◽  
Corn Yield ◽  
Negative Impacts ◽  
Growing Conditions ◽  
Almost All ◽  
The U.S

Abstract. A detailed analysis was conducted of the effects of climate change and increased carbon dioxide (CO2) concentrations on corn yield in the U.S. with a crop model using outputs from multiple general circulation models (multi-GCMs). Corn yield was simulated for 1999-2010, for the 2050s (average for 2041-2060), and for the 2070s (average for 2061-2080) under the representative concentration pathway 8.5 (RCP8.5) climate scenario. Results indicated a shortening of the growing period (GP), decreased water use efficiency (WUE) in almost all regions, and increased evapotranspiration (ET) during GP in almost all regions except for the southern U.S. Using multi-GCMs, the simulations under the RCP8.5 scenario resulted in negative effects of climate change on yield in almost all regions during both future periods. Especially strong negative impacts were reported south of latitude 40° N due to less optimal growing conditions. On the other hand, there were relatively smaller negative impacts in high-latitude regions (approximately north of latitude 40° N) due to more optimal growing conditions because of larger temperature changes compared to low-latitude and mid-latitude regions. Higher CO2 concentrations have the potential to increase corn yield. CO2 effects resulted in an approximately 0.04% to 0.05% increase in yield per 1 ppm increase in CO2 concentration under the RCP8.5 scenario, but the negative impacts of increased temperatures fully outweighed the CO2-fertilization effects. Keywords: Climate change impacts, CO2 effects, Corn yield, Multiple GCMs, Uncertainty.

Carbon-sensitive productivity, climate and institutions

2015 ◽  
Vol 21 (1) ◽  
pp. 109-133 ◽  
Author(s):  
Surender Kumar ◽  
Shunsuke Managi
Keyword(s):  
Climate Change ◽  
Developing Countries ◽  
Productivity Growth ◽  
Climate Change Impacts ◽  
Growth Potential ◽  
Technological Adoption ◽  
Lost Productivity ◽  
Reduce Emissions ◽  
Negative Impacts ◽  
The Cost

AbstractClimate and institutions might be crucial in lowering the vagaries of climate change impacts in terms of productivity. This study measures the relationships of productivity measures adjusted for the regulation of carbon emission and institutions together with climate change throughout the world. This paper finds that there is higher potential for reduction of CO2emissions in developing countries at lower cost. However, the cost to reduce emissions lowers their growth potential in terms of lost productivity growth. Better institutions help to lower the negative impacts of climate change by improving the process of technological adoption in developing countries. Climate change reduces the productivity growth in developing countries by lowering the process of technological adoption, and better institutions result in higher productivity.

scholarly journals Coastal Communities and Climate Change: A Case Study in Gujarat, India

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Anil Kumar Roy
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
Coastal Communities ◽  
Mitigation Measures ◽  
Extreme Weather Events ◽  
Coping Capacity ◽  
Weather Events ◽  
Negative Impacts ◽  
Indian Cities

Developing countries are highly vulnerable to climate change [1,2]. They have less coping capacity to deal with its negative impacts. India is one of the most vulnerable countries in South Asia. It urgently requires adaptation and mitigation measures to cope with possible impacts arising from extreme weather events due to climate change. Indian cities, particularly the coastal ones, are at a comparatively greater risk as their population is likely to grow rapidly and may reach 500 million over the next 50 years [3]. The assessment of climate change impacts and adaptability both at the macro region and micro levels is necessary to create effective mitigation policies

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