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4 August 2016
Earlier snowmelt carries drastic consequences for forests
Earlier snowmelt periods associated with a warming climate may hinder subalpine forest regulation of atmospheric carbon dioxide.
20 July 2016
Predicting the export and fate of global ocean net primary production: The EXPORTS
Earth’s carbon cycle is heavily influenced by ecological processes in the ocean. The quantification and understanding of the intricate relationships between carbon dioxide and ocean ecosystems, EXPORTS and what effects these have on the present and future conditions on Earth, is one of the greatest challenges in oceanography. One of the most important aspects that preclude the full understanding of the ocean carbon cycle is the lack of parallel measurements at a global scale; this also hinders our ability to make robust predictions in an uncertain future. The EXport Processes in the Ocean from RemoTe Sensing (EXPORTS) Science Plan was proposed to NASA in order address this knowledge gap. It aims at developing a predictive understanding of the export and fate of global ocean net primary production (NPP) and its implications to the ocean carbon cycle for present and future climates. The goal of this project is to quantify of the mechanisms that control the export of carbon from the euphotic zone as well as its fate in the underlying “twilight zone”.
20 June 2016
Observing bubbles from underwater gas seeps (video)
Natural oil and gas seeps exist on the ocean floor all over the world. Although humans have known about and exploited these natural resources for thousands of years, scientists know little about how oil and gas droplets disperse in deep water and how they affect underwater ecosystems.
15 June 2016
5 Reflections Beyond World Oceans Day
June 8 was World Oceans Day, but onboard every day is ocean’s day: non-stop work to better our understanding of 70 percent of our planet. We asked some of our crew and scientists to share thoughts we could consider beyond one calendar date.
2 June 2016
In desert suburb, homes in homeowners’ associations use less water, study finds
A new study finds that in a Phoenix suburb, homeowners’ associations are good for water conservation. According to the study, homes in HOAs in Goodyear, Arizona use up to 17,000 fewer liters of water (4490 gallons) in the peak month of July compared to their non-HOA counterparts, roughly the amount needed to fill eleven hot tubs.
24 May 2016
Watch underwater canyons take shape in real time
Submarine canyons are major underwater routes for transporting rapidly-moving water that is heavy with sediment from the continental shelf to the deep ocean. Here, a group of researchers uses a sandbox experiment to simulate how a fast, sediment-laden current carves these canyons out of the continental slope. They recorded the entire experiment with time-lapse video, shown here.
10 May 2016
Climate change could cause more concentrated storms
Rising temperatures are causing heavy rain storms to become concentrated over smaller areas, a scenario that could potentially cause extreme flooding in urban locations, according to new research.
9 May 2016
More than half of streamflow in the Upper Colorado River Basin originates as groundwater
More than half of the streamflow in the Upper Colorado River Basin originates as groundwater, according to a new study published online today in Water Resources Research, a journal of the American Geophysical Union.
20 April 2016
Asian irrigation influences East African rain
Irrigation from agriculture can directly influence climate thousands of kilometers away and even leap across continents, new research finds. Up to 40 percent of the rain in some regions of East Africa can be attributed to irrigation used in agriculture in Asia, according to a new study published in Geophysical Research Letters.
19 April 2016
Standards dramatically advance streamflow and flood forecasting in the U.S. and elsewhere
his is a story about how water data standards, computational hard work, high-performance computing, serendipity and synergy led to an operational capability for nationwide forecasting of streamflow and flooding at high-resolution, in near-real-time. This has been evolving for several years now, but has gone into hyper-drive in just the last couple years.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.