Articles Tagged: climate models

TES satellite instrument gives new insight into water cycle

Research using NASA satellite measurements has given scientists a better understanding of what happens to rain and snow that falls on land—how much runs off into rivers, lakes and aquifers; how much plants use; and how much simply evaporates. Among the new findings: plants around the world use less water than previous studies had indicated, and most freshwater passes more rapidly through soil than previously thought, with less exposure to the nutrients and contaminants contained there.

Climate models may misjudge soils’ carbon emissions

Some of the microscopic creatures which live in the soil are able to digest dead plants and trees, turning their contents into gas and minerals. But researchers say their work show that our understanding of how organic material is decomposed is fundamentally wrong, calling into question some current climate models.

Sensitivity of the mean and variability of Indian summer monsoon to land surface schemes in RegCM4: understanding coupled land-atmosphere feedbacks

A relatively simple land surface model, the Biosphere-Atmosphere Transfer Scheme (BATS) and the more complex Community Land Model (CLM3.5) coupled to RegCM4 are used to investigate land-atmosphere feedback processes during the Indian summer monsoon. Observations of soil moisture, surface fluxes and radiation are needed for better understanding and improvement of coupled land-atmosphere feedbacks in models during the Indian summer monsoon.

Future climate models greatly affected by fungi and bacteria

Researchers from Lund University, Sweden, and USA have shown that our understanding of how organic material is decomposed by fungi and bacteria is fundamentally wrong. This means that climate models that include microorganisms to estimate future climate change must be reconsidered.

Quantifying climate forcings and feedbacks over the last millennium in the CMIP5/PMIP3 models

Analysis of the global energy budget during the last millennium indicates that Little Ice Age (LIA; 1600-1850 CE) cooling is largely driven by volcanic forcing (comprising an average of 77% of the total forcing among models), while contributions due to changes in insolation (10%) and greenhouse gas concentrations (13%) are substantially lower.

Climate surprises possibly in store for Antarctica, say researchers

Two different climate scenarios appear plausible for Antarctica in the 21st century, says Paul Mayewski, director of the Climate Change Institute at the University of Maine. Evidence from Earth’s climate history supports the possibility of such a surprise in the rate of ice-sheet response and climate change in the Southern Hemisphere, he says.

Higher Trophic Levels Overwhelm Climate Change Impacts on Terrestrial Ecosystem Functioning

Forest floor food webs play pivotal roles in carbon cycling, but they are rarely considered in models of carbon fluxes, including soil carbon dioxide emissions (respiration), under climatic warming. Without isolating and including the significant impact of invertebrates, climate models will be incomplete, hindering well-informed policy decisions.

Partner & Fellow Blogs