Across the South Island, soil moisture levels generally decreased slightly in most locations, although small improvements were observed in Tasman and Buller District during the past week.
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.
Across the North Island, soil moisture levels generally decreased during the past week due to lower than average rainfall for this time of year.
With the rainfall amounts anticipated in the next week, additional soil moisture improvements are likely parts of the central and eastern North Island with the greatest potential for soil moisture increase from the eastern Bay of Plenty through to the Hawke’s Bay regions, particularly in the higher terrain.
In the North Island, another week of substantial rainfall is likely in many areas, which could lead to further soil moisture improvements. With substantial rainfall amounts anticipated in the next week, additional soil moisture improvements are likely in the northern half of the North Island.
Across the South Island, soil moisture levels generally did not change substantially in northern areas this past week, but soils in central and southern areas continued to get much wetter than normal thanks to more heavy rainfall in recent days.
“Once it starts raining hard on a burn area, the things can get generated really fast, like five minutes,” says Kean.The debris flow can carry boulders and trees along with mud, making it more dangerous than a regular flood or a dry landslide.
While soil erosion and sedimentation are entirely natural processes, the rates increased markedly due to loss of forest landcover with the arrival of people in New Zealand, says Dr Swales.
With the rain amounts expected in the east and north, soil moisture levels are anticipated to improve in the next week, while soil moisture should stay near constant or slightly decrease in the rest of the island where many locations will see total rain amounts less than 15mm.
Parts of Queenstown-Lakes District in Otago, the Grey and Buller Districts in the West Coast, northeastern Marlborough, and the Waimate District in southern Canterbury experience well below average rainfall for this time of year, while the rest of the island had near normal rainfall.
The current pattern of higher than normal pressure and prevailing westerlies, bringing generally dry conditions especially in the east, is expected to continue over the next seven days.
Arctic lakes could release a vast reservoir of ancient carbon buried deep under the permanently frozen ground, or permafrost, thereby accelerating climate change.
"The mechanism of abrupt thaw and thermokarst lake formation matters a lot for the permafrost-carbon feedback this century," said first author Katey Walter Anthony at the University of Alaska, Fairbanks, who led the project that was part of NASA’s Arctic-Boreal Vulnerability Experiment (ABoVE), a ten-year program to understand climate change effects on the Arctic.
13 August 2018, Rio de Janeiro - Improving the health of the world's soils is essential to achieve the Sustainable Development Goals, including Zero Hunger and combating climate change and its impacts, FAO Director-General José Graziano da Silva, today told participants of the World Congress of Soil Science.
My favorite baseball teams, the Royals and the Cubs, reminded us of this over the last two years, and prairies (the underdog in the world series of ecosystems) proved this again recently in an analysis demonstrating that grasslands have a role to play in our climate change solutions (Ahlering et al.