Winter Breeding in Emperor Penguins: A Consequence of the Summer Heat?

The Condor ◽  
1980 ◽  
Vol 82 (2) ◽  
pp. 159 ◽  
Author(s):  
Berry Pinshow ◽  
W. R. Welch
Keyword(s):  
Emperor Penguins ◽  
Summer Heat ◽  
Winter Breeding

scholarly journals Night diving by some emperor penguins during the winter breeding period at Cape Washington

2018 ◽  
Vol 221 (1) ◽  
pp. jeb170795 ◽  
Author(s):  
Gerald L. Kooyman ◽  
Robert P. van Dam ◽  
Luis A. Hückstädt
Keyword(s):  
Breeding Period ◽  
Emperor Penguins ◽  
Winter Breeding

scholarly journals Modeling Northern Hemisphere Summer Heat Extreme Changes and Their Uncertainties Using a Physics Ensemble of Climate Sensitivity Experiments

2006 ◽  
Vol 19 (17) ◽  
pp. 4418-4435 ◽  
Author(s):  
Robin T. Clark ◽  
Simon J. Brown ◽  
James M. Murphy
Keyword(s):  
Structural Changes ◽  
Heat Waves ◽  
Full Range ◽  
Daily Maximum ◽  
Model Parameters ◽  
Mean Values ◽  
Summer Heat ◽  
Modeling Uncertainties ◽  
Physics Ensemble ◽  
Projected Changes

Abstract Changes in extreme daily temperature events are examined using a perturbed physics ensemble of global model simulations under present-day and doubled CO2 climates where ensemble members differ in their representation of various physical processes. Modeling uncertainties are quantified by varying poorly constrained model parameters that control atmospheric processes and feedbacks and analyzing the ensemble spread of simulated changes. In general, uncertainty is up to 50% of projected changes in extreme heat events of the type that occur only once per year. Large changes are seen in distributions of daily maximum temperatures for June, July, and August with significant shifts to warmer conditions. Changes in extremely hot days are shown to be significantly larger than changes in mean values in some regions. The intensity, duration, and frequency of summer heat waves are expected to be substantially greater over all continents. The largest changes are found over Europe, North and South America, and East Asia. Reductions in soil moisture, number of wet days, and nocturnal cooling are identified as significant factors responsible for the changes. Although uncertainty associated with the magnitude of expected changes is large in places, it does not bring into question the sign or nature of the projected changes. Even with the most conservative simulations, hot extreme events are still expected to substantially increase in intensity, duration, and frequency. This ensemble, however, does not represent the full range of uncertainty associated with future projections; for example, the effects of multiple parameter perturbations are neglected, as are the effects of structural changes to the basic nature of the parameterization schemes in the model.

Emperor penguins and the First German South Polar Expedition, 1901–1903: The elusive colony in Posadowsky Bay

Polar Record ◽  
2021 ◽  
Vol 57 ◽  
Author(s):  
Barbara Wienecke
Keyword(s):  
Sea Ice ◽  
Satellite Imagery ◽  
East Antarctica ◽  
Scientific Interest ◽  
Breeding Colony ◽  
Emperor Penguins ◽  
Aptenodytes Forsteri ◽  
South Polar

Abstract Members of the First German South Polar Expedition (1901–1903) encountered emperor penguins (Aptenodytes forsteri) near their wintering station in the sea ice of Posadowsky Bay, East Antarctica. The penguins appeared to be generally less of scientific interest, but more of a useful resource. Despite the presence of chicks, the men were uncertain about the existence of a breeding colony, and did not record the position of the penguin aggregation they encountered. In later years, only a few sightings confirmed the existence of a colony, and the last ground visit took place in 1960. Based on satellite imagery, a colony appears to exist even now. This paper examines what impact the expedition may have had on this colony, and whether it still exists.

scholarly journals The Effect of Summer Heat on Infants and Children

1912 ◽  
Vol 144 (1) ◽  
pp. 143
Author(s):  
EUGEN SCHLESINGER ◽  
LOUIS STARR ◽  
THOMPSON S. WESTCOTT
Keyword(s):  
Infants And Children ◽  
Summer Heat

A Review of the European Summer Heat Wave of 2003

2010 ◽  
Vol 40 (4) ◽  
pp. 267-306 ◽  
Author(s):  
R. García-Herrera ◽  
J. Díaz ◽  
R. M. Trigo ◽  
J. Luterbacher ◽  
E. M. Fischer
Keyword(s):  
Heat Wave ◽  
Summer Heat

scholarly journals Summer Heat and Low Soil Organic Matter Influence Severity of Hazelnut Cytospora Canker

2014 ◽  
Vol 104 (4) ◽  
pp. 387-395 ◽  
Author(s):  
Jay Ram Lamichhane ◽  
Alfredo Fabi ◽  
Leonardo Varvaro
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Disease Severity ◽  
Severity Index ◽  
Stress Factors ◽  
Disease Severity Index ◽  
Positive Correlation ◽  
Summer Heat ◽  
Production Areas ◽  
Cytospora Canker

Cytospora canker, caused by the fungus Cytospora corylicola, is present in hazelnut production areas worldwide. The disease is widespread throughout the main production areas of Italy. The causal agent is considered to be a secondary invader of damaged tissue that attacks mainly stressed plants. However, little is known of disease severity and stress factors that predispose plants to infection. In particular, the role of pedoclimatic factors was investigated. Direct survey indicated that disease severity varied across several study sites. Geostatistics showed a strong positive correlation between disease severity index and summer heat (r = 0.80 and 0.91 for July and August, respectively) and strong negative correlation between disease severity index and soil organic matter (r = –0.78). A moderate positive correlation between disease severity index and magnesium/potassium ratio (r = 0.58) and moderate negative correlations between disease severity index and total soil nitrogen (r = –0.53), thermal shock (r = –0.46), and rainfall (r = –0.53) were determined. No significant correlation between disease severity index and soil aluminum (r = –0.35), soil pH (r = –0.01), and plant age (r = –0.38) was found.

Energy Saving Technology for Doors and Windows of the Building

2014 ◽  
Vol 1056 ◽  
pp. 128-130
Author(s):  
Fu Yun Yang
Keyword(s):  
Energy Saving ◽  
Indoor Environment ◽  
Energy Performance ◽  
Building Envelope ◽  
Energy Performance Of Buildings ◽  
Summer Heat ◽  
Energy Saving Technology ◽  
Heat Preservation

Doors and windows of the building is an important part of the building envelope. AS the transparent and open envelope of the building, doors and windowsare the weakest part in the winter and summer heat preservation. It directly affects the energy performance of buildings. Therefore, do a good job of building doors and windows energy saving is an important way to optimize the indoor environment and realize energy saving.

Sign in / Sign up

Export Citation Format

Share Document