Sentences with phrase «atmospheric conditions during»

They measured precipitation and atmospheric conditions during the period by using a new statistical method that accounts for spatial and temporal relationships between rainfall levels, temperature, and other geophysical phenomena.

Chris Reynolds has a detailed blog post on atmospheric conditions during all of May on his Dosbat blog, but below I'll be looking at those conditions compared to those of other years during May.

Klotzbach said the area where most tropical storms and hurricanes form had the driest mid-to-lower atmospheric conditions during the Aug. 1 to Sept. 25 period since reliable records began in 1970.

Her photograms are a direct record of atmospheric conditions during the process of their production: light, humidity, and the outside temperature, among other factors, determine the surface of the final works.

Dendrochronology (or tree - ring dating) is the scientific method of dating tree rings (also called growth rings) to the exact year they were formed in order to analyze atmospheric conditions during different periods in history.

Not exact matches

Using sophisticated atmospheric and climate models, the researchers estimated the levels of PM2.5 directly attributable to wildfires during a recent six - year period, 2004 to 2009, as well as under projected future climate change conditions (2046 - 2051).

A major shift in atmospheric dynamics occurred during the mid-Holocene, when winter storm tracks switched and produced wetter and colder conditions in northwestern Europe, and the expansion of a Mediterranean - type climate toward southeastern Europe.

Meteorologists say it is not a surprise that this storm comes during a time when El Nino, a set of atmospheric and oceanic conditions over the Pacific, is especially strong.

«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.

«Considering the thousand possibilities for things to go wrong when dealing with such high tech instrumentation under such harsh conditions, it's a small miracle that our instruments functioned without problems already during the first flight,» emphasizes the atmospheric physicist, Professor Stephan Borrmann.

Under the old statute, drivers had to have their lights turned on during, quote, «unfavorable atmospheric conditions.»

Because melting is so much more energetically efficient than sublimation, the main way that moderate changes in atmospheric conditions — including air temperature — affect ablation is through changing the number of hours during which melting occurs, and the amount of energy available for melting.

The year 2007 was a «perfect storm» of atmospheric conditions for sea ice loss during all of the summer (Zhang et al. 2008, and others).

While the conditions in the geological past are useful indicators in suggesting climate and atmospheric conditions only vary within a a certain range (for example, that life has existed for over 3 billion years indicates that the oxygen level of the atmosphere has stayed between about 20 and 25 % throughout that time), I also think some skeptics are too quick to suggest the lack of correlation between temperature and CO2 during the last 550 million years falsifies the link between CO2 and warming (too many differences in conditions to allow any such a conclusion to be drawn — for example the Ordovician with high CO2 and an ice age didn't have any terrestrial life).

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».

Morison and Untersteiner (University of Washington); 5.6 Million Square Kilometers; Heuristic Estimate is based on recent observations, including the previous winter Arctic Oscillation (AO), ice concentrations observed during North Pole Environmental Observatory (NPEO) hydro surveys, atmospheric and ice surface conditions observed with NPEO buoys and Web Cams, and recent ice trajectories.

Lukovich et al. (University of Manitoba); 4.0 Million Square Kilometers; Heuristic Surface, stratospheric, and ice conditions in 2010 relative to 2007 atmospheric and ice conditions during June provide the basis for projection of September sea ice extent.

Based on the understanding of both the physical processes that control key climate feedbacks (see Section 8.6.3), and also the origin of inter-model differences in the simulation of feedbacks (see Section 8.6.2), the following climate characteristics appear to be particularly important: (i) for the water vapour and lapse rate feedbacks, the response of upper - tropospheric RH and lapse rate to interannual or decadal changes in climate; (ii) for cloud feedbacks, the response of boundary - layer clouds and anvil clouds to a change in surface or atmospheric conditions and the change in cloud radiative properties associated with a change in extratropical synoptic weather systems; (iii) for snow albedo feedbacks, the relationship between surface air temperature and snow melt over northern land areas during spring and (iv) for sea ice feedbacks, the simulation of sea ice thickness.

Broad - scale Silurian climatic conditions can be inferred by determining the positions and orientations of the paleocontinents and assuming that atmospheric circulation functioned according to the same basic principles during Silurian times as it does today.

Morison and Untersteiner (University of Washington); 5.6 Million Square Kilometers; Heuristic Estimate is unchanged from last month and is based on the previous winter Arctic Oscillation (AO), ice concentrations observed during North Pole Environmental Observatory (NPEO) hydro surveys, atmospheric and ice surface conditions observed with NPEO buoys and Web Cams, and recent ice trajectories.