000			02762cam a2200337 a 4500
003			EG-GiCUC
008			220216s2021 ua dhb f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.26.M.Sc.2021.Mo.A
100	0		_aMohamed Ahmed Abdelfattah Sayed
245	1	0	_aAnalysis of greenhouse gases from satellite observations over Egypt / _cMohamed Ahmed Abdelfattah Sayed ; Supervised Mohamed Magdy Abdelwahab , Elsayed Robaa , Zainab Awad
246	1	5	_aدراسة تحليل غازات الاحتباس الحرارى من قياسات الأقمار الاصطناعية فوق مصر
260			_aCairo : _bMohamed Ahmed Abdelfattah Sayed , _c2021
300			_a88 P . : _bcharts , facsmilies , maps ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physical Meteorology
520			_aThe greenhouse effect is vital for human beings as it retains the earth{u2019}s average surface temperature warmer by about 33{u00B0}C, however, the increase in the greenhouse gases concentration than average may have an adverse influence on the surface temperature. The present study was aimed at assessing the main greenhouse gases such as water vapor at several pressure levels and methane, along with nitrogen dioxide the air pollutant, over four Egyptian stations Cairo, Alexandria, Hurghada, and Aswan. Additionally analyzes of the surface temperature and air temperature at 500 hPa and 100 hPa was performed to assess the warming trend over Egypt throughout the period (1980-2020). Furthermore, the correlation coefficient was calculated between specific humidity and air temperature at 13 pressure levels. The results revealed that warming occurred at the surface and 500 hPa for all the Egyptian stations where the warming at Hurghada was by about a factor of two the other cities. PWV and surface specific humidity increased similarly over the Egyptian stations at a significant rate by about a factor of two the amount of global rate. Lower stratospheric water vapor showed a strong positive trend since 2006. Additionally, methane increased significantly over all the stations by a nearly continuous rate, nitrogen dioxide showed a significant positive trend especially over Cairo in contrast to the global average which showed a negative trend
530			_aIssued also as CD
650		0	_aObservations
653		4	_aCOVID-19
653		4	_aPWV
653		4	_aSatellite observations
700	0		_aElsayed Robaa , _eSupervising
700	0		_aMohamed Magdy Abdelwahab , _eSupervising
700	0		_aZainab Awad , _eSupervising
905			_aAmira _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c84238 _d84238