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Amazon Carbon Dynamics: Understanding the Photosynthesis-Climate Link

By Guest PostMarch 13, 2014Environmentamazon carbon dynamics, amazon tropical forests, australia, carbon cycle science, climate, computer model, dennis dye, earth observing satellites, hydrologist valeriy ivanov, jin wu, link, manaus, photosynthesis, project, santarem, scientists in brazil, scott saleska, seasonal variations, sydney, three dimensional variation, university of arizona, university of michigan, university of technology, usgs

FLAGSTAFF, Ariz. — Researchers at the U.S. Geological Survey, the University of Michigan, the University of Arizona, and the University of Technology, Sydney (Australia) are collaborating with scientists in Brazil on a three-year research project that investigates a basic yet unanswered question in Earth-system and global carbon-cycle science: What controls the response of photosynthesis in Amazon tropical forests to seasonal variations in climate?

Results of the study will help improve the reliability of global climate forecasts by guiding improvements in the treatment of tropical forest photosynthesis and related water-cycle processes in Earth-system models. (more…)

Pacific Locked in ‘La Nada’ Limbo

By Guest PostFebruary 8, 2013Environmentbill patzert, climate forecasters, data, el niño, el nino conditions, equatorial pacific ocean, evolving state, global climate, interannual ocean signal, jason 2, key indicator, la nada state, la nina conditions, la nina events, NASA, neutral, normal sea level, ocean circulation, satellite, sea surface height, seasonal variations

Sea-surface height data from NASA’s Jason-2 satellite show that the equatorial Pacific Ocean is still locked in what some call a neutral, or ‘La Nada’ state. This condition follows two years of strong, cool-water La Nina events.

A new image, based on the average of 10 days of data centered on Jan. 26, 2013, shows near-normal conditions (depicted in green) across the equatorial Pacific. The image is available at: https://sealevel.jpl.nasa.gov/images/latestdata/jason/2013/20130126P.jpg . (more…)

Arctic Ice Melt Could Pause in Coming Decades

By Guest PostAugust 14, 2011Environmentamerican geophysical union, arctic ice, arctic observations, arctic sea ice loss, changing arctic climate, climate conditions of the late 20th and early 21st century, climate variability, community climate system model, computer modeling study, effect of climate change on arctic sea ice, emissions of greenhouse gases, jennifer kay, marika holland, most powerful computer climate models, national center for atmospheric research, national science foundation, ncar, nsf, retreat of arctic sea ice, sarah ruth, seasonal variations, software

*Researchers find unexpected results in study of ice cover in the Arctic*

Despite the rapid retreat of Arctic sea ice in recent years, the ice may temporarily stabilize or somewhat expand at times over the next few decades, new research indicates.

Results of a study by scientists at the National Center for Atmospheric Research (NCAR) appear this week in the journal Geophysical Research Letters (GRL), published by the American Geophysical Union.

The National Science Foundation (NSF), NCAR’s sponsor, funded the work. (more…)

Tag Archives: seasonal variations

Amazon Carbon Dynamics: Understanding the Photosynthesis-Climate Link

Pacific Locked in ‘La Nada’ Limbo

Arctic Ice Melt Could Pause in Coming Decades