Tag Archives: climate change

Climate changes will reduce the growing areas in Brazil

ag11By Noêmia Lopes
Agência FAPESP –  The increases in temperatures and changes in the rainfall regime due to global warming that are forecast for several regions of Brazil could significantly impact agriculture in the country. Crops such as beans, soy, wheat, and maize will be particularly affected, according to studies by the Brazil Global Climate Change Research Network (Rede Clima).
By cross-referencing the models of the Intergovernmental Panel on Climate Change (IPCC) and Brazilian regional models, researchers at Rede Clima analyzed the expected impact of climate change on national crop-growing areas.
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Crop pests moving polewards through global warming

The Korea Herald – Crop-damaging insects, bacteria, fungus and viruses are moving poleward by nearly 3 kilometers each year, helped by global warming, a study said.

A team at Britain’s University of Exeter trawled through two huge databases to chart the latitude and dates for the earliest record of 612 crop pests.

Since 1960, these pests have been heading either northwards or southwards at a rate of around 2.7 kilometers yearly.

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Climate changes in Brazil through 2100

By Elton Alisson

28Agência FAPESP – The climate in Brazil in the next few decades should be hotter, with a gradual increase in the average temperature in all regions of the country, varying between 1 °C and 6 °C by 2100 compared with the temperatures at the end of the 20th century.

In the same period, rainfall should also decrease significantly in the majority of the central regions and the north and northeast. In contrast, there will be an increase in precipitation in the south and southeast.

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Model helps in the understanding of climate variations in Brazil

27By Noêmia Lopes

Agência FAPESP – The deforestation and burning of the Amazon and interactions between the Atlantic Ocean and the atmosphere are some of the Brazil-specific climate issues that the Brazil Earth System Model (BESM) takes into consideration to address climate change better than the world’s existing models.

The model was presented in detail on September 9 at the opening of the First National Global Conference on Climate Change in São Paulo.

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World’s Most Vulnerable Areas to Climate Change Mapped

Science 20Using data from the world’s ecosystems and predictions of how climate change will impact them, scientists from the Wildlife Conservation Society, the University of Queensland, and Stanford University have produced a roadmap that identifies the world’s most vulnerable and least vulnerable areas in the Age of Climate Change….>>Continue Reading<<

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Climate Change Impacts

3By Marcia McNutt

Science – Anticipating the future under the influence of climate change is one of the most important challenges of our time, and the topic of the special section in this issue of Science (see p. 472). The natural systems that provide oxygen, clean water, food, storm and erosion protection, natural products, and the potential for future resources, such as new genetic stocks for cultivation, must be protected, not just because it is part of good stewardship but also so that they can take care of us. But even the first step of modeling the effects of greenhouse gas sources and sinks on future temperatures requires input from atmospheric scientists, oceanographers, ecologists, economists, policy analysts, and others. Continue reading

Conserve Water and Soil Fertility to Increase Productivity under Climate Change

32ANALYSIS – Higher temperatures and longer growing seasons in the UK could provide opportunities for farmers to increase productivity.
 
This in turn will allow them to benefit from potential rising global food prices. However, the farmers will need to also take into account the productive capacity of the land because of limited water resources, the loss of soil fertility or the persistent presence of pests and diseases according to a new report from the Committee of Climate Change.
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