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Internal Gravity Waves of Finite Amplitude in a Stratified Incompressible Atmosphere
With James O’Brien
NCAR, Boulder, CO, 1972
This book deals with the study of internal waves of finite amplitude that change their shape as they propagate; i.e., the Airy type. The atmosphere is assumed to consist of a discrete number of incompressible layers, which are stratified horizontally. The study includes four experiments and an appendix.
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The Stratification of Cloud Layers in a Stable Atmosphere
Monthly Weather Review
April 1967, Vol. 95, No. 4
The conclusion in this study is that cloud stratifications are caused by internal gravity waves. It is found that waves whose phase velocities are of the order of 10m. sec.-1 are capable of producing three strata whose elevations fall within the limits of observed altitudes of tropospheric clouds
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A Note on the “Square Cloud" (including two replies in vol.24, Dec.1966, pp.308 & 442)
Journal of Meteorology
July 1966, Vol. 23, No. 4

The features of the so-called square cloud is explained by the mechanism of squall line formation.
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Head-on-Collision Between Two Pressure Jumps
Journal of Geophysical Research
Apr.15, 1966, vol.71, no.8
A head-on collision between two pressure jumps are considered. In the final steady state it is found that two pressure jumps which are weaker and slower than the original jumps emerge from the region of collision. The process of collision results in a higher rate of loss of mechanical energy.
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The Spiral Bands of a Hurricane: A Possible Dynamic Explanation
Journal of Meteorology
July 1966, Vol. 23, No. 4

The main hypothesis is that the spiral bands of a hurricane are associated with gravitational waves of finite amplitude propagating at the interface of a high-level inversion. An external source of disturbance is postulated in the form of a fresh surge of air at the exterior region of the hurricane.
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The 'Musical' Sound Emitted by a Tornado
Monthly Weather Review
April 1966, Vol. 94, No. 4

This paper attempts to explain the "whining" or "hissing" sound reported from tornadoes. The leading hypothesis is that the air masses involved in the tornado circulation execute some free vibrations.
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Some Aspects of the Dynamics of Tornadoes
Monthly Weather Review
April 1955, Vol. 83, No. 4

A dynamical model for a tornado is constructed that assumes it to be dynamically equivalent to a combination of a pure sink and a pure vortex in the hydrodynamic sense. It is found that because of the compressibility of the air, the flow is separated into three main regions. Formulas are derived by which the radii of these regions may be computed.
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A Proposed Mechanism For The Development Of The Eye Of A Hurricane
Journal of Meteorology
June 1954, Vol. 11, No. 3
The process of the development and growth of the eye of a hurricane from the small immature stage to the large mature stage is explained. A numerical example is considered, to illustrate the importance of the role of hydraulic jumps.
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The Meridional Growth Of Squall Lines
Journal of Meteorology
August 1954, Vol. 11, No. 4
An explanation of why squall lines that form ahead of an accelerating cold front are sometimes observed to grow in length. A formula is derived for the formation and growth of a squall line and a numerical example is given to clarify the method.
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Cyclogenesis By A Purely Mechanical Process
Journal of Meteorology
April 1949, Vol. 6, No. 2
A study of the mechanical influence of a surge of cold air on cyclogenesis. It is shown that the cool air acquires an energy, which is of the same order of magnitude as the hydro­dynamical energy of the appropriate frontal wave. An actual example is described with the results computed from one of the equations derived in this work.
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On The Dynamics of Hurricanes (Part I and II)
New York University Meteorological Papers
Sep. 1953, vol.71, , vol.2, no.2


In part I the existence of the eye of the hurricane is explained by pure hydrodynamical reasoning. In part II the suggestion that the band-like structure of a hurricane is due to some kind of wave motion is explored.
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A Proposed Mechanism Of Squall Lines: The Pressure Jump Line
Journal of Meteorology
August 1953, Vol. 10, No. 4
Commentary on a study by M. Tepper by the same title.
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Group-Velocity of Atmospheric Waves
Sc.D. Thesis, M.I.T.
Cambridge, MA, 1946

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The Atmospheric Solitary Wave
Bulletin of the American Meteorological Society
Dec. 1955, vol.36, no.10
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A Note on The Atmospheric Solitary Wave
Journal of Meteorology
August 1956, Vol. 13, No. 4
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Severe Duststorm in Iraq
Proceedings of the Iraqi Scientific Society
1957, No. 1
The physics of dustraising is reviewed and the hypothesis that severe duststorms of Iraq are associated with pressure-jump lines is advanced. A case study, which occurred in Iraq on March 23, 1954, is discussed in some detail in support of this hypothesis.
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A Note on Periodicity of Frontal Precipitation
Journal of Meteorology
June 1953, Vol.10
The hypothesis is advanced that the pre-frontal precipitation bands are a wave phenomenon, i.e. that they are as much of a wave phenomenon as the oceanic surface waves.
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Wave Motion at the Surface of a Current Which Has an Exponential Distribution of Vorticity
Annals of the New York Academy of ScienceMay 1948, vol.51, no.3,
A solution of wave motion superposed on a current, which is caused by winds, is made. Frequency equations are derived in the form of series solutions, and approximate computations on the basis of these series are made. The results are compared with gravitational waves that are travelling on a constant current.
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  • Iraq photos
  • USA photos
  • Lebanon photos
Despite his many travels, Dr. Abdullah lived most of his life in Iraq. The photos here represent different time periods including those from 1958-1963 when he was president of Baghdad University. Read More
Dr. Abdullah spent many years in the United States, particularly 1944-1946, 1947-1949, 1952-1955 and 1965 until his death in 1969. Read More
Dr. Abdullah studied at the American University of Beirut between 1930-1934. He also returned to Lebanon several times in subsequent years. Read More

Facts & Fallacies This section dispels misconceptions

  • Date of Birth +

    Date of Birth

    There is some confusion regarding the true birth date of Dr. Abdullah with some claiming it is 1911 and others 1912. His official Ottoman birth certificate, as well as other official documents, list his birth date as 1911 without specifying the day or month. But according to his own estimates based on his family’s recollections, Dr. Abdullah believed that his birth date was the 14th of November 1913.

  • Dr. Abdullah & Albert Einstein +

    Dr. Abdullah & Albert Einstein

    There is a widespread misconception concerning Dr. Abdullah’s doctoral supervisor with some believing that he was a student of Albert Einstein. This is incorrect as his supervisor was the noted MIT professor of Meteorology, Bernard Horwitz. Einstein, as is well known, was a specialist in Theoretical Physics, while Dr. Abdullah studied Meteorology. Einstein was a professor at Princeton University, while Dr. Abdullah studied at MIT. The two never met.

  • Einstein's pen +

    Einstein's pen

    There is a story related to the one above that Einstein gave Dr. Abdullah a pen as a gift which was then stolen from him after he was arrested by the Ba‘thists in 1963. There is no truth to this story.

  • Dr. Abdullah & Truman's medal +

    Dr. Abdullah & Truman's medal

    There is a false claim that US President Truman gave Dr. Abdullah a medal in recognition of his scientific achievements. Dr. Abdullah received numerous accolades but none from a US president.

  • The arrest of Dr. Abdullah in 1963 +

    The arrest of Dr. Abdullah in 1963

    There are various erroneous accounts of how Dr. Abdullah was arrested after the Ba’thist coup of 1963. The truth is that an army convoy came to his residence in the morning of February 9th. No one entered the house as they waited in the street at the outside gate while he changed. He was allowed to get ready and walk out to them himself without anyone setting a hand on him. This, of course, is not to absolve that regime from his subsequent maltreatment while he was in prison.

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