Observed Changes in Minimum and Maximum Temperatures in Nile Delta, Egypt in the 20th Century

2014 ◽  
Vol 25 (1) ◽  
Author(s):  
Ebtisam Mohamed ◽  
Maged Hussein
2021 ◽  
Author(s):  
Jorgen Segerlund Frederiksen ◽  
Stacey Lee Osbrough

Abstract. Systematic changes, since the beginning of the 20th century, in average and extreme Australian rainfall and temperatures indicate that Southern Australian climate has undergone regime transitions into a drier and warmer state. South-west Western Australia (SWWA) experienced the most dramatic drying trend with average streamflow into Perth dams, in the last decade, just 20 % of that before the 1960s and extreme, decile 10, rainfall reduced to near zero. In south-eastern Australia (SEA) systematic decreases in average and extreme cool season rainfall became evident in the late 1990s with a halving of the area experiencing average decile 10 rainfall in the early 21st century compared with that for the 20th century. The shift in annual surface temperatures over SWWA and SEA, and indeed for Australia as a whole, has occurred primarily over the last 20 years with the percentage area experiencing extreme maximum temperatures in decile 10 increasing to an average of more than 45 % since the start of the 21st century compared with less than 3 % for the 20th century mean. Average maximum temperatures have also increased by circa 1 °C for SWWA and SEA over the last 20 years. The climate changes are associated with atmospheric circulation shifts and are indicative of second order regime transitions, apart from extreme temperatures for which the dramatic increases are suggestive of first order transitions.


2016 ◽  
Vol 7 (2) ◽  
pp. 1-14 ◽  
Author(s):  
Maged Hussein ◽  
Ebtisam Mohamed

2019 ◽  
pp. 555-639 ◽  
Author(s):  
Laurent Chrzanovski

The Forcart collection of Ptolemaic, Roman and Late Roman lamps from Fayum is today the largest single-collector Egyptian lychnological corpus owned by a Swiss public institution, the Geneva Museum of Art and History, which acquired it in 1923. The importance of the 145 lamps in this collection is twofold. Firstly, all the artifacts were offered to Max Kurt Forcart by the different directors of excavations operating legally in the Fayum area during the first two decades of the 20th century, giving us a clear—even if generic—finding area, contrary to collections purchased from the various antiquaries. And secondly, even if incomplete compared to the richness and diversity of the Fayum workshops, the chronological and typological range it covers makes it a perfect companion to the only two published and illustrated lamp catalogs of regular excavations made in the area: the early 1900s work of W.M.F. Petrie at Ehnasya and the later investigations by the University of Michigan team at Karanis. Also highlighted are the unique Fayum fashions and approaches to the importation, adoption or rejection of common types found in the Nile Delta, as well as the emergence of typically microregional subtypes as discussed by John W. Hayes.


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