Sentences with phrase «atmospheric temperatures lead»
Increased atmospheric temperatures lead to surface melting and ponding on the ice surface.
http://www.antarcticglaciers.org/ Not exact matches
The handful of old Soviet probes that descended to the planet's surface perished in an hour or two, destroyed by the 900 - degree Fahrenheit temperature (hot enough to melt lead) and atmospheric pressure 90 times that on Earth.
Even so, they succumbed to Venus's crushing atmospheric pressure and 900 degree Fahrenheit surface temperatures — hot enough to melt lead — within a couple hours of landing.
Record emissions of carbon dioxide mean atmospheric concentrations have reached levels that lead to the highest temperature increases
Black carbon aerosols — particles of carbon that rise into the atmosphere when biomass, agricultural waste, and fossil fuels are burned in an incomplete way — are important for understanding climate change, as they absorb sunlight, leading to higher atmospheric temperatures, and can also coat Arctic snow with a darker layer, reducing its reflectivity and leading to increased melting.
However, this has to a large extent not led to immediate action to address the severity of the imminent crisis of rising global temperatures and associated problems due to the increase in atmospheric carbon dioxide concentrations due to human activity.
«For various periods over the last 60 years, we have been able to combine important processes: atmospheric variability, such as the North Atlantic Oscillation, water and air temperatures, the occurrence of fresh surface water, and the duration of convection,» explains Dr. Marilena Oltmanns from GEOMAR, lead author of the study.
This is because warmer temperatures and other changes in the atmosphere related to a changing climate, including higher atmospheric levels of methane, spur chemical reactions that lead to ozone.
More data are needed to explain those shifts, but atmospheric temperatures likely played a role, said Claus - Dieter Hillenbrand, the study's lead author and a senior marine geologist with the British Antarctic Survey.
Stable atmospheric concentrations of greenhouse gases would lead to continued warming, but if carbon dioxide emissions could be eliminated entirely, temperatures would quickly stabilize or even decrease over time.
The effects of increased temperatures and atmospheric CO2 concentration have been documented concerning shifts in flowering time and pollen initiation from allergenic plants, elevated production of plant - based allergens, and health effects of increased pollen concentrations and longer pollen seasons.15, 16,17,18,19,20,21,22,23,24,25,26 Additional studies have shown extreme rainfall and higher temperatures can lead to increased indoor air quality issues such as fungi and mold health concerns.27, 28,29,30
«We grew teosinte in the conditions that it encountered 10,000 years ago during the early Holocene period: temperatures 2 - 3 degrees Celsius cooler than today's with atmospheric carbon dioxide levels at around 260 parts per million,» said Dolores Piperno, senior scientist and curator of archaeobotany and South American archaeology at the Smithsonian's National Museum of Natural History and the Smithsonian Tropical Research Institute, who led the project.
The letter notes that «Stable atmospheric concentrations of greenhouse gases would lead to continued warming, but if carbon dioxide emissions could be eliminated entirely, temperatures would quickly stabilize or even decrease over time.
Dr Alison Cook, who led the work at Swansea University, says: «Scientists know that ocean warming is affecting large glaciers elsewhere on the continent, but thought that atmospheric temperatures were the primary cause of all glacier changes on the Peninsula.
It concluded that atmospheric carbon dioxide concentrations had already increased by about 25 percent in the past century, and continued use of fossil fuels would lead to substantial temperature increases in the future.
These rising atmospheric greenhouse gas concentrations have led to an increase in global average temperatures of ~ 0.2 °C decade — 1, much of which has been absorbed by the oceans, whilst the oceanic uptake of atmospheric CO2 has led to major changes in surface ocean pH (Levitus et al., 2000, 2005; Feely et al., 2008; Hoegh - Guldberg and Bruno, 2010; Mora et al., 2013; Roemmich et al., 2015).
While the new research didn't answer what led to the particular atmospheric patterns associated with extreme temperatures, Horton hopes that they can use the same approach from the study to try to figure that out.
Increased levels of atmospheric carbon dioxide could also significantly alter ocean temperatures and chemistry over the next century, which could lead to increased and more severe mass bleaching and other stressors on coral reefs.
Both communities tend to take the change for granted, and to neglect any purely statistical or chaotic effects which could lead to excursions of the Earth's surface temperature during periods of a couple of decades, without requiring a secular change either in the solar constant or in atmospheric transparency.
A glass greenhouse and an atmospheric greenhouse both involve a physical barrier that blocks the flow of heat, leading to a warmer temperature below the barrier.
In the same paper in which he made his often - quoted «prediction» that doubling the atmospheric concentration of CO 2 would lead to an increase of 10 °C in surface mean temperature, F. Möller makes an almost never quoted disclaimer to the effect that a 1 percent increase in general cloudiness in the same model would completely mask this effect.
Droplets can persist for months to years leading to small decreases in global atmospheric temperatures.
«The observed pattern of warming, comparing surface and atmospheric temperature trends, doesn't show the characteristic fingerprint associated with greenhouse warming,» wrote lead author David Douglas, a climate expert from the University of Rochester, in New York state.
The new GSL statement outlines evidence that a relatively modest rise in atmospheric CO2 levels and temperature leads to significant sea level rise, with oceans more acidic and less oxygenated.
Indeed, there have already been pronouncements of failure of the Lima / Paris talks from some green groups, primarily because the talks have not and will not lead to an immediate decrease in emissions and will not prevent atmospheric temperatures from rising by more than 2 degrees Celsius (3.6 degrees Fahrenheit), which has become an accepted, but essentially unachievable political goal.
Much of the recent sea ice loss is attributed to warmer sea surface temperatures with southerly wind anomalies a contributing cause [Francis and Hunter, 2007; Sorteberg and Kvingedal, 2006], with thermodynamic coupling leading to associated increases in atmospheric moisture.»
Assuming all other things are equal then I would expect that a shutdown in the THC would lead to more heat transport by the atmospheric circulation as the temperature gradient would be greater.
There will be — indeed, already have been — pronouncements of failure of the Lima / Paris talks from some green groups, primarily because the talks will not lead to an immediate decrease in emissions and will not prevent atmospheric temperatures from rising by more than 2 degrees Celsius (3.6 degrees Fahrenheit), which has become an accepted, but essentially unachievable political goal.
What I think we'll see (in fact, I'm pretty sure of it) is a paper later on this year giving a pretty good summary of natural variability that led to the «hiatus» in atmospheric temperature increases and their relative contributions:
«Using data series on atmospheric carbon dioxide and global temperatures we investigate the phase relation (leads / lags) between these for the period January 1980 to December 2011.
So at the ocean surface, the atmospheric pressure remains relatively constant, increased CO2 concentrations lead to an increased partial pressure of CO2 but temperature leads to to a decreased solubility, partially canceling each other out.
And as to his claim that there may be «places around the world where global warming will lead to less crop success and yield, even when taking into account the carbon dioxide fertilization effect,» he appears to be equally ignorant that rising levels of atmospheric CO2 tend to raise the temperature of optimum plant photosynthesis beyond the predicted temperature values associated with global warming, effectively nullifying this worn out claim (Idso & Idso, 2011).
The hypothesis of global warming alarmism posits that increasing levels of atmospheric carbon dioxide should lead to increasing temperatures, particularly with respect to Antarctica's super-cold, super-dry air mass.
Much of the inter-annual to decadal scale variability in surface air temperature (SAT) anomaly patterns and related ecosystem effects in the Arctic and elsewhere can be attributed to the superposition of leading modes of variability in the atmospheric circulation.
In some locations, changes in ocean temperatures and atmospheric patterns brought about by El Niño lead to drier conditions, which increases the damage during «fire season».
«Despite thousands of scientific articles affirming numerous benefits of rising temperatures and atmospheric CO2, IPCC makes almost no mention of any positive externalities resulting from such,» said one of the report's lead authors, Dr. Craig D. Idso.
Contrary to predictions by the world's leading climate models and despite rising levels of atmospheric carbon dioxide, global surface temperatures have been flat for 16 years.
Prempting Cohenite, The facts you point to, increases in atmospheric CO2, despite contradictory temperature numbers, leads to, at least, That our present model of the earth climate is wrong.
«What our study shows is that observed water vapor concentrations are high enough and temperatures are low enough over the U.S. in summertime to initiate the chemistry that is known to lead to ozone losses,» said Harvard atmospheric scientist David Wilmouth, one of the paper's co-authors, in an email.
Evidence in support of the hypothesis that increasing atmospheric carbon dioxide MUST inevitably lead to an increase in global temperature exists only in the Models.
The facts you point to, increases in atmospheric CO2, despite contradictory temperature numbers, leads to, at least,
This was when lead author Santer changed the IPCC report after scientists had signed off on it saying there was now evidence of a «discernible human fingerprint» in atmospheric temperatures.
«We're seeing increasing temperatures and relatively little change in average precipitation, but an increase in the variability and the occurrence of both wet and dry extremes,» said Daniel Swain, an atmospheric scientist at Stanford's School of Earth, Energy & Environmental Sciences and the lead author of a new paper published in Science Advances.
«The authors write that «the El Niño - Southern Oscillation (ENSO) is a naturally occurring fluctuation,» whereby «on a timescale of two to seven years, the eastern equatorial Pacific climate varies between anomalously cold (La Niña) and warm (El Niño) conditions,» and that «these swings in temperature are accompanied by changes in the structure of the subsurface ocean, variability in the strength of the equatorial easterly trade winds, shifts in the position of atmospheric convection, and global teleconnection patterns associated with these changes that lead to variations in rainfall and weather patterns in many parts of the world,» which end up affecting «ecosystems, agriculture, freshwater supplies, hurricanes and other severe weather events worldwide.»»
This study, which was supported by the U.S. National Science Foundation, is the first to analyze long - term trends in rainfall and surface air temperature over a timescale of nearly an entire century, the study's lead author, Natalie Thomas, a doctoral candidate in atmospheric and oceanic science at the University of Maryland, told Live Science.
Traditional anthropogenic theory of currently observed global warming states that release of carbon dioxide into atmosphere (partially as a result of utilization of fossil fuels) leads to an increase in atmospheric temperature because the molecules of CO2 (and other greenhouse gases) absorb the infrared radiation from the Earth's surface.
This study has highlighted the role of internal variability of the NAO, the leading mode of atmospheric circulation variability over the Atlantic / European sector, on winter (December - March) surface air temperature (SAT) and precipitation (P) trends over the next 30 years (and the next 50 years: see Supplemental Materials) using a new 40 - member ensemble of climate change simulations with CESM1.
All else being equal, increases in atmospheric carbon dioxide lead to warmer global average surface temperatures.
The locally warmer temperatures can lead to more rapid vertical decreases of atmospheric temperature so that at some level overlying temperature is lower and radiates less.
But some studies indicate that increased atmospheric CO2 that leads to those higher temperatures could enhance photosynthesis and increase rice yields.