scholarly journals Weather Whiplash: Trends in rapid temperature changes in a warming climate

2021 ◽  
Author(s):  
Cameron C. Lee
Keyword(s):  
Temperature Changes ◽  
Warming Climate ◽  
Rapid Temperature

Investigation of temperature changes over India in association with meteorological parameters in a warming climate

2017 ◽  
Vol 38 (2) ◽  
pp. 867-877 ◽  
Author(s):  
G. Purnadurga ◽  
T.V. Lakshmi Kumar ◽  
K. Koteswara Rao ◽  
M. Rajasekhar ◽  
M.S. Narayanan
Keyword(s):  
Meteorological Parameters ◽  
Temperature Changes ◽  
Warming Climate

What the past can say about the present and future of fire

2020 ◽  
Vol 96 ◽  
pp. 66-87
Author(s):  
Jennifer R. Marlon
Keyword(s):  
Climate Change ◽  
Terrestrial Ecosystems ◽  
Combustion Products ◽  
Temperature Changes ◽  
The Public ◽  
The Past ◽  
Warming Climate ◽  
Highly Sensitive ◽  
In Fire ◽  
Very High

AbstractWildfires are an integral part of most terrestrial ecosystems. Paleofire records composed of charcoal, soot, and other combustion products deposited in lake and marine sediments, soils, and ice provide a record of the varying importance of fire over time on every continent. This study reviews paleofire research to identify lessons about the nature of fire on Earth and how its past variability is relevant to modern environmental challenges. Four lessons are identified. First, fire is highly sensitive to climate change, and specifically to temperature changes. As long as there is abundant, dry fuel, we can expect that in a warming climate, fires will continue to grow unusually large, severe, and uncontrollable in fire-prone environments. Second, a better understanding of “slow” (interannual to multidecadal) socioecological processes is essential for predicting future wildfire and carbon emissions. Third, current patterns of burning, which are very low in some areas and very high in others—are often unprecedented in the context of the Holocene. Taken together, these insights point to a fourth lesson—that current changes in wildfire dynamics provide an opportunity for paleoecologists to engage the public and help them understand the potential consequences of anthropogenic climate change.

A simple thermode for rapid temperature changes

1974 ◽  
Vol 349 (1) ◽  
pp. 83-85 ◽  
Author(s):  
H. Fruhstorfer ◽  
I. Detering
Keyword(s):  
Temperature Changes ◽  
Rapid Temperature

Measurement of Temperature and Heat Flux Changes During the Fixing Process in Electrophotographic Machines

1996 ◽  
Vol 118 (1) ◽  
pp. 150-154 ◽  
Author(s):  
T. Mitsuya ◽  
K. Masuda ◽  
Y. Hori
Keyword(s):  
Heat Flux ◽  
Print Quality ◽  
Two Dimensional ◽  
Temperature Changes ◽  
One Dimensional ◽  
Temperature Heat ◽  
Rapid Temperature ◽  
Pressure Changes ◽  
The Relationship ◽  
Electrophotographic Printing

Increasingly higher speeds of modern electrophotographic printing force examination of the problem of retaining sufficient fixing strength without deterioration of print quality. In the nip region between the two rollers where fixing occurs, the significant parameters are temperature, heat flux, and pressure changes. Their optimization is necessary to maintain both speed and print quality. Difficulty in analyzing the relationship among these parameters occurs because of the complexity of two-dimensional phenomena in a rotating field and the rapidity of changes. Experimental equipment to measure relative heat flux in the nip region during rapid temperature changes was designed. Two sensors are installed in the heat roller. An adiabatic piece is buried under sensor 1. Sensor 2, without an adiabatic piece, detects temperature. Sensor 1 is electrically heated and always at the same temperature as sensor 2. Heat flux changes are obtained by noting the electric power supplied to sensor 1. The equipment was fabricated and measurements were made. They indicate an intermittent two-dimensional heat flux. Because of this, temperature decreases rapidly before the entrance to the nip region. Estimates of two-dimensional effects are made and modified for a one-dimensional case. From them, the temperature field in the nip region for actual fixing conditions is calculated.

Shifting perceptions of rapid temperature changes’ effects on marine fisheries, 1945–2017

2019 ◽  
Vol 20 (6) ◽  
pp. 1111-1123
Author(s):  
Loren McClenachan ◽  
Jonathan H. Grabowski ◽  
Madison Marra ◽  
C. Seabird McKeon ◽  
Benjamin P. Neal ◽  
...  
Keyword(s):  
Marine Fisheries ◽  
Temperature Changes ◽  
Rapid Temperature

Failure Analysis on a De-NOx Catalyst of a Large Waste Burner

2005 ◽  
Vol 290 ◽  
pp. 78-85
Author(s):  
Jakob Kübler ◽  
R. Baechtold ◽  
Gurdial Blugan ◽  
K. Lemster ◽  
S. Fuso
Keyword(s):  
Failure Analysis ◽  
Microstructural Analysis ◽  
Chemical Properties ◽  
Exhaust Gas ◽  
Temperature Changes ◽  
Rapid Temperature ◽  
Cleaning Procedures ◽  
Different Depths ◽  
Processing Defects ◽  
Erosive Effect

Modern waste burners are equipped with catalysts to reduce NOX. During operation the catalysts and their performance are influenced by, for example rapid temperature changes, facility vibrations, cleaning procedures and unwashed exhaust gas (when the catalyst is installed before the washer). The catalyst discussed in this paper comprised over 2’500 extruded elements of 150 x 150 x 770 mm3. During commissioning the catalyst elements exhibited a tendency to spall off pieces, thus preventing acceptance of the plant. For the failure analysis, one element from the catalyst was removed and two spare elements were selected. The investigation comprised a visual check, fractography, measurement of the most important physical, mechanical and chemical properties, and a microstructural analysis. It could be shown that: − Processing defects, such as extrusion defects, were the source of cracks which led to pieces spalling off; − Hot steam, used for periodic cleaning, reduced the structural strength by half; − The elements were exposed to higher mechanical loads than expected during transport; − The cleaning process, in combination with particles transported by the exhaust gas, has an erosive effect on the catalyst material; − Blockages, caused by catalyst material among other things, could be found at different depths; − The chemical composition did not significantly differ between used and unused elements. In summary, the failure analysis led to an understanding of the failure mechanism and to a set of recommendations for improvements whose implementation ultimately led to the plant being cleared for operation.

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