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carbon cycle

海洋混合和洋流的相互作用决定了氧气的可用性,并决定了使用的方式和时机。
Posted inResearch Spotlights

追踪马尾藻海18度海水中的氧气

by David Shultz 14 May 202122 December 2021

生物地球化学浮子为北大西洋的海洋混合和氧气运动提供了更好的图像。

Plots showing probability distributions derived from measurements of 14C in long-chain fatty acids
Posted inEditors' Highlights

A 2700-year Record of Permafrost Thaw Sensitivity to Climate

by Susan Trumbore 5 May 20219 December 2021

Changes in the 14C ages of carbon and biomarkers deposited at the mouth of a river draining a permafrost watershed track responses of regional thaw depth to past warming and cooling.

Ocean mixing and the interaction of currents govern oxygen availability and determine how and when it’s used.
Posted inResearch Spotlights

Tracking Oxygen in the Sargasso Sea’s 18 Degree Water

by David Shultz 15 April 202122 December 2021

Biogeochemical floats provide an improved picture of ocean mixing and oxygen movement in the North Atlantic Ocean.

拉丁美洲的许多生态系统未能被环境观测网所代表
Posted inResearch Spotlights

拉丁美洲环境观测网络的缺口

Kate Wheeling, freelance science writer by Kate Wheeling 15 April 20216 March 2023

尽管拉丁美洲对全球碳和水循环具有显著影响,但其在FLUXNET站点中所占的比例相对较小,这限制了该观测网络在该地区的代表性。

A satellite image of a tropical forest.
Posted inEditors' Vox

Tropical Carbon and Water Observed from Above

by J. Worden, S. Saatchi and A. Bloom 6 April 202129 March 2023

Satellite observations show how tropical forest carbon fluxes respond to changes in water from climate variability.

Two plots showing measurements of soil and ecosystem metabolism
Posted inEditors' Highlights

Dueling Eyes on Ecosystem Metabolism Tell Diverging Stories

by Ankur R. Desai 2 April 202122 December 2021

Multiple state-of-the-art independent observing systems consistently disagree on magnitudes and patterns of ecosystem metabolism of carbon dioxide, but together can shed new insight.

Many ecosystems across Latin America are not represented by environmental observatory networks
Posted inResearch Spotlights

The Gaps in Environmental Networks Across Latin America

Kate Wheeling, freelance science writer by Kate Wheeling 29 March 20216 March 2023

Despite its notable influence on global carbon and water cycles, Latin America accounts for a relatively small share of FLUXNET sites, which limits the representativeness of the network in the region.

Steam and gas rise from a volcano on the island of Java, Indonesia.
Posted inScience Updates

Earth’s Volatile Balancing Act

by J. D. Muirhead, Samer Naif, T. P. Fischer and Donna Shillington 24 March 20213 November 2021

How do greenhouse gases and water circulate from minerals deep below Earth’s surface into the atmosphere and oceans—and then back again? Our understanding continues to evolve.

Two figures comparing organic carbon fluxes in a natural river (top) versus an engineered river with artificial levees (bottom).
Posted inEditors' Highlights

How River Engineering Alters Carbon Cycling

by Susan Trumbore 23 March 202127 January 2022

Artificial levees in the Lower Mississippi River bypass floodplain processing and increase delivery of carbon to the ocean.

Dead pine tree trunks stand amid tall grass.
Posted inResearch Spotlights

Coastal Flooding Enhances Methane Buildup in Forests

Aaron Sidder, freelance science writer by Aaron Sidder 25 February 20212 November 2021

Increased seawater exposure from flooding and storms is altering how coastal forests cycle methane, leading to more greenhouse gas accumulation in tree stems and soil.

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