15 May 2017, Climate Home, Bangladesh faces food supply crunch after flash floods. The price of rice has spiked in Bangladesh after flash floods wiped out vast stretches of paddy field just ahead of harvest time. Unusually heavy pre-monsoon rainfall submerged 400,000 hectares of wetland in the northeast of the country, damaging some 2 million tonnes of rice. It is already having an impact on the market. Agricultural economist Quazi Shahabuddin, former head of the Bangladesh Institute of Development Studies, told Climate Home it will cause suffering across the country this year. A kilogram of coarse rice costs 38 Bangladeshi taka ($0.57), a 58% hike since the same period in 2016, according to official data. The government is planning to procure 600,000 tonnes of rice from countries including India and Thailand, the first time in six years it has relied on international markets. The food department has put out a tender for the first 100,000-tonne tranche. “The sudden flash flood has forced us to do that,” explained Badrul Hasan, director general of the food department. The affected districts Netrokona, Sunamganj, Brahmanbaria, Moulovibazar, Hobignaj, Kishoreganj and Sylhet are located at the foothills of Indian Meghalaya and Assam states. Known as “haor” or wetland, this region is typically inundated every year in mid-May and stays underwater for six months. The problem this year was not the volume of rain, but the timing. Flash floods came at the end of March, before the farmers had harvested the “boro” crop they rely on for their annual income. Read More here
Category Archives: Impacts Observed & Projected
10 May 2017, Climate Central (report), Coastal communities are enduring growing flood risks from rising seas, with places like Atlantic City, sandwiched between a bay and the ocean, facing some of the greatest threats. Guided by new research by Climate Central’s Scott Kulp and Benjamin Strauss, reporter John Upton and photographer Ted Blanco chronicled the plight of this city’s residents as they struggle to deal with the impacts. Upton spent months investigating how the city is adapting, revealing vast inequity between the rich and the poor…. DeDomenicis has lived in this house since 1982, a few hundred feet from a bay. She used to work as a restaurant server; now she’s a school crossing guard. Her husband walked a mile to his job at Bally’s Casino until he retired in January. They’ve seen floods worsen as the seas have risen, as the land beneath them has sunk, and as local infrastructure has rotted away. “It comes in the front door, the back door, and then from the bottom of the house, in through the sides,” DeDomenicis said. “You watch it come in and it meets in the middle of the house — and there’s nothing you can do.” Two miles east of Arizona Avenue, the U.S. Army Corps of Engineers is spending tens of millions of dollars building a seawall to reduce storm surge and flooding risks for Atlantic City’s downtown and its towering casinos, five of which have closed in the past four years. A few miles in the other direction, it’s preparing to spend tens of millions more on sand dunes to protect million-dollar oceanfront homes. Read More here
10 May 2017, Climate News Network, Ocean oxygen decline greater than predicted. Circulation changes caused by warming waters and melting polar ice are the most probable explanations for the rapidly falling levels of oxygen in the ocean. US scientists who have been warning that warmer oceans are more likely to be poorer in dissolved oxygen have now sounded the alarm: ocean oxygen levels are indeed falling, and seemingly falling faster than the corresponding rise in water temperature. That colder water can hold more dissolved gas than warmer water is a commonplace of physics: it is one reason why polar seas are teeming with marine life and tropical oceans are blue, clear and often relatively impoverished. In 2013, an international consortium of marine scientists warned that oxygen levels in the oceans could fall by between 1% and 7% by the century’s end. And this could, other scientists predicted, lead to what they politely called “respiratory stress” for some marine life. Ocean warming Ocean ecologists in the US and Germany warned last year that parts of the deep oceans were already showing signs of oxygen deprivation with corresponding dead zones. Earlier this year, another research group looked at the computer simulations for the years 1920 to 2100 and predicted that the hazards were likely to increasewith warming. Now the team have returned to the issue. They report in Geophysical Research Letters that they looked at data for the last 50 years and found the oxygen levels started dropping in the 1980s, as ocean temperatures began to climb – and falling unexpectedly rapidly. The trend of oxygen falling is about two to three times faster than what we predicted from the decrease of solubility associated with ocean warming,” says Takamitsu Ito, of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology, who led the study. “This is most likely due to the changes in ocean circulation and mixing associated with the heating of the near-surface waters and the melting of polar ice.” Read More here
6 May 2017, Inside Climate News, Extreme Weather Flooding the Midwest Looks a Lot Like Climate Change. Devastating storms still roiling much of the American Midwest have dumped record levels of rain over the past week and caused flash flooding that has killed at least 10 people, inundated towns and highways, and forced hundreds of people to evacuate their homes. Parts of Missouri, Illinois, Indiana, Arkansas and Louisiana received 10 to 15 inches of rain in the past seven days, according to the National Weather Service, resulting in record crests of numerous rivers across the central United States.Extreme storms like these have become more common as global temperatures have risen and the oceans have warmed. Some have the clear fingerprints of man-made climate change. “Of course there is a climate change connection, because the oceans and sea surface temperatures are higher now because of climate change, and in general that adds 5 to 10 percent to the precipitation,” Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research, said. “There have been many so-called 500-year floods along the Mississippi about every five to 10 years since 1993.” Scientists won’t know the extent to which climate change played a role in these storms unless they do an attribution study. Such analyses determine how much the rise in trapped greenhouse gases increased the odds of a single event happening. Increasingly, scientists have tried to do these studies far more quickly to spread accurate information about how climate change is affecting us today and improve longer-term forecasts and warnings. An attribution study of last August’s deadly Louisiana’s storms—classified as a 1,000-year storm in the worst-hit areas and a 500-year storm in others—found that human-caused climate warming increased the chances of the torrential rains by at least 40 percent. That figure corresponds to the overall increase in extreme storms in the region. “Across the board, the United States has seen an increase in the heaviest rainfall events, and the Midwest specifically has seen an increase [in these events] of almost 40 percent,” said Heidi Cullen, chief scientist at Climate Central and a member of World Weather Attribution (WWA), a group that is developing methods to quickly determine climate change’s role in extreme weather events. Read More here