随着世界第四大湖泊的消失,风从沙漠中扬起大量粉尘,散播到中亚地区,引发了人们对公共卫生的担忧。
remote sensing
Measuring the Microstructure of Snow from Space
There is more to snow than flakes. Microwave measurements are shown to be capable of illuminating the microstructure of snow in ways that will improve our ability to monitor snow fields from space.
Glacial Ice Offers Polar Bears a Precarious Climate Refuge
An isolated polar bear population in southeastern Greenland survives in fjords, despite spotty sea ice. But this pocket of bears is not a sign of how the species could be saved.
Underwater Sounds Help Reveal Extent of Glacial Calving
If a glacier calves into the Arctic Ocean, does it make a sound? Some scientists say yes and have devised a clever way to use those sounds to calculate the size of the fallen ice chunks.
Coseismic Displacement of 1987 Earthquake from Aerial Images
Differencing digital surface topography models constructed from historical aerial photographs reveal the coseismic surface displacement field of the 1987 earthquake in northern New Zealand.
When the Aral Sea Dried Up, Central Asia Became Dustier
Winds kick up large amounts of dust from the desert that has formed as the world’s fourth largest lake has disappeared, spreading it around the region and raising concerns about public health.
The Lower Humidity of Urban Areas Moderates Outdoor Heat Stress
Data scarcity of traditional observations cannot reveal whether surface temperature capture the potential for urban heat stress. This study improves the dataset with 40,000 citizen weather stations.
Satellites Get First Full-Year View of Arctic Sea Ice Thickness
The AI-based monitoring method may unlock data that could improve shipping safety and climate predictions.
Monitoring Moisture from Afar
Undisturbed tropical rain forests are experiencing more frequent droughts, but the ecosystems are isolated and difficult to assess. Scientists are using remote sensing to expand the depth and scope of monitoring efforts.
Alaskan Glaciers Advance and Retreat in Satellite Imagery
Researchers tracked 19 maritime glaciers in Kenai Fjords National Park over several decades and found that tidewater glaciers tended to experience less ice loss than other types of glaciers.