New NIWA-led research shows increasing flood risk is going to be what leads people to make changes to adapt to sea-level rise.“Rising seas are slowly causing a trifecta of impacts along coastlines in Aotearoa: increasingly frequent flooding, coastal erosion and even permanent inundation,” says Dr Scott Stephens, NIWA Chief Scientist for Coasts & Estuaries.
As of 24 March, the New Zealand Drought Index (NZDI) map below shows that widespread dry to very dry conditions extend from southern Northland to Wellington, excluding Taranaki, and across the east of the North Island, as well as Marlborough, eastern and coastal Canterbury, parts of Otago and Southland.
A new study shows that nuisance flooding is exacerbated by dredging and the construction of piers and jetties that were intended to make coastal living easier but are in fact redirecting the flow of incoming ocean water and making high tides higher than ever before.
Hotspots are currently in place in much of Northland, parts of Auckland, northern Waikato and a small portion of East Cape, while hotspots have strengthened in eastern Wairarapa and expanded to include the eastern Tararua District and coastal Hawke’s Bay. The New Zealand Drought Index (NZDI) map below shows that meteorological drought and severe meteorological drought are in place in the northern half of the Far North District.
As of 14 December, the New Zealand Drought Index (NZDI) map below shows that drier than normal soils are located in much of Northland, southern Auckland, parts of coastal Canterbury and Otago, and interior Otago.
It might surprise you to know that in the United States there are several hundred cities that intentionally discharge untreated, raw sewage into their coastal waters whenever their sewer systems are overwhelmed with stormwater.
That was one of the findings in research, published this month in leading scientific journal Natural Hazards and Earth Science Systems, in which NIWA researchers describe how small increases in sea level rise are likely to drive huge increases in the frequency of coastal flooding in the next 20–30 years.
“The Nature Conservancy needed a conservation solution that could tackle bycatch challenges while still providing economic opportunities for sustainable fishing in coastal fishing communities,” said Dr. Alexis Jackson, Fishery Project Director with TNC’s California Oceans Program.
With the anticipated rainfall in the upcoming week, little or no change in soil moisture levels are expected from the south Waikato northbound, along with parts of southern Hawke’s Bay and coastal Wairarapa, while the rest of the North Island are expected to experience slight soil moisture increases.
The driest soils across the North Island compared to normal for this time of the year are now found in southern Northland, northern Auckland, much of the Coromandel Peninsula, the Hauraki District, and coastal Wairarapa.
NIWA coastal physicist Dr Joanne O’Callaghan is part of a working group aiming to establish a collaborative New Zealand ocean observing network.Climate change is making its presence felt in New Zealand waters with marine heatwaves, increasing ocean acidification and sea level rise.”.
But when moderators and audience members asked the Democratic hopefuls whether they’d relocate people away from coastal areas prone to flooding, the candidates called it virtually everything other than retreat.
Two reports released today by NIWA and the Deep South National Science Challenge reveal new information about how many New Zealanders, how many buildings and how much infrastructure could be affected by extreme river and coastal flooding from storms and sea-level rise.
Photo © Kevin Arnold / TNC Our three-part Indonesia Guide: Coastal Conservation and Sustainable Livelihoods through Seaweed Aquaculture in Indonesia provides information and recommendations for how seaweed buyers can increase the sustainability of their supply chains, conservation organizations can work within seaweed aquaculture for environmental and social gains, and farmers can improve their environmental and production practices.
Which is why we recently brought the public and private sectors together through the World Bank’s West Africa Coastal Areas Management Program (WACA) to discuss how they can collaborate to fight coastal degradation, increase coastal resilience to climate change, and improve the livelihoods of coastal communities.
When cyclones strike, mangrove forests help protect coastal areas from storm surges. In addition, the significant reduction in water flow velocity from planting mangroves will protect embankments from damage and thus reduce infrastructure maintenance costs.
The wettest soils for this time of the year are located in parts of Gisborne, eastern Bay of Plenty and southern coastal Hawke’s Bay. Areas deemed hotspots have expanded over the past week.
“The people within MENAR are saltwater people, they rely heavily on the sea, to the point that if their fish stocks collapse it would be a catastrophe,” says Pete Waldie , a coastal fisheries scientist with The Nature Conservancy’s Melanesia program .
The driest soils in the North Island compared to normal are currently found in the eastern Far North District, around New Plymouth, and coastal Horowhenua. Across the South Island, soil moisture levels generally increased in Southland and the lower West Coast and remained constant or slightly decreased elsewhere.
According to a recent study published in Nature Climate Change by Conservancy scientists and partners from Florida International University, the U.S. Environmental Protection Agency and others, healthy wetlands (think wetlands covered with plants) are net sinks for greenhouse gases in the U.S. That means, on the whole, the country’s coastal wetlands remove more greenhouse gases – especially CO2 – than they release.
Rob Bell, Paula Blackett and Scott Stephens were among five lead authors who worked on the Ministry for the Environment’s updated coastal hazards and climate change guidance for local government.
I love the trend in nature writing to explore areas outside the usual wilderness areas and national parks: the urban wilds, the forgotten and overlooked spots. The wildlife, plants, land and water of coastal Carolina play central roles, and the natural history information is integrated in a way that makes a much richer story.
“This study unequivocally demonstrates that earthquake-triggered canyon flushing is the primary process that carves out submarine canyons and delivers coastal sediment to the deep ocean,” says NIWA marine geologist Dr Joshu Mountjoy.
But much of it is in trouble: Sea level rise is coming for Los Angeles County and its 74 miles of coast.According to a new report from the New York Academy of Sciences, it’ll take LA as much as $6.4 billion to fortify itself against an impending increase in coastal flooding, with moves such as nourishing its beaches with extra sand and elevating its ports.