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Sunday, August 2, 2020 | History

2 edition of nature of homogeneity in rainfall records over East Africa found in the catalog.

nature of homogeneity in rainfall records over East Africa

Laban Ogallo

nature of homogeneity in rainfall records over East Africa

by Laban Ogallo

  • 186 Want to read
  • 31 Currently reading

Published by Republic of Kenya, Meteorological Dept., Institute for Meteorological Training and Research, Nairobi in Nairobi .
Written in English

    Places:
  • Africa, East.
    • Subjects:
    • Rain and rainfall -- Africa, East.

    • Edition Notes

      Statementby L.J. Ogallo.
      SeriesResearch report / Republic of Kenya, Institute for Meteorological Training and Research ;, no. 4/81, Research report (Institute for Meteorological Training and Research (Kenya)) ;, no. 81/4.
      Classifications
      LC ClassificationsQC925.6.A33 O328 1981
      The Physical Object
      Paginationvii, 18 p. :
      Number of Pages18
      ID Numbers
      Open LibraryOL2837830M
      LC Control Number83980217

      Start studying East Africa. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Rainfall Variability in West Africa during the Years –90 evolution of the standardized rainfall index over Niger (south to N) between and (The standardized rainfall index is an average of rainfall standardized at each station with Rainfall is by nature an intermittent process. In re-gions where convection is the File Size: 1MB.

      role in the production of rainfall over Gauteng. For rainfall and, indeed, heavy rainfall to occur over the interior of South Africa, humid tropical maritime air should invade the subcontinent from the east. However, this penetration is inhibited by the semi-permanent anti-cyclone from – hPa, which is. The mean vegetation cover over West Africa is mmyr showed in shaded areas and is derived from the NDVI climatology between and The vegetation of West Africa presents a simple picture compared to other part of tropical Africa 16][. The zones of vegetation are principally related to rainfall-based climatic zones and the nature of the.

      The influence of topography on east African climate is investigated using the International Centre for Theoretical Physics Regional Climate Model, with focus on October to December season. Results show that the mean rainfall (temperature) significantly reduces (increases) over the region when topography elevation is reduced. Based on the model, when topography over the selected region (KTU) is Cited by: hrs annual maximum rainfall depth. 2. The Study Area. Rwanda is a small landlocked country in East African Great Lakes region. It lies within latitudes 1˚S - 3˚S and longitudes 28˚E - 31˚E having surface area of 26, km is bordered with Uganda in the north and Tanzania in the east while in the south and west are Burundi and the Democratic Republic of Congo, by: 9.


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Nature of homogeneity in rainfall records over East Africa by Laban Ogallo Download PDF EPUB FB2

We also estimate that the mean annual rainfall decreased by 30% during the last glacial period, in agreement with the rainfall history inferred from lake level fluctuations History of East.

The Nature of Rainfall Variability over Africa on Time Scales of Decades to Millennia Article in Global and Planetary Change 26(1) November with Reads How we measure 'reads'Author: Sharon Nicholson. Homogeneity of Rainfall and Temperature Series in Bangladesh.

in studies of climatic trends and climatic change all over the world. Testing the Homogeneity of Rainfall Records. The study focuses on the analysis of extreme precipitation events of the present and future climate over southern Africa.

Parametric and non-parametric approaches are used to identify and analyse these extreme events in data from the Coordinated Regional Climate Downscaling Experiment (CORDEX) models.

The performance of the global climate model (GCM) forced regional climate Cited by: The trend of rainfall in East Africa, (East African Commission. Meterological Dept. Technical memorandum) [H. W Sansom] on *FREE* shipping on qualifying : H. W Sansom. An analysis of recent rainfall conditions in eastern Africa son* The analysis recent rainfall conditions over the Greater Horn of Africa (Figure 1) is hindered by the difficulty in obtaining relevant data.

The problem is particularly Nature –Cited by: Teleconnections between the Southern Oscillation and seasonal rainfall over East Africa during the period – were investigated using correlation methods.

The results from the study indicated significant negative zero lag correlations between Southern Oscillation and seasonal rainfall over parts of East Africa during the months of Cited by:   River basin rainfall series and extensive river flow records are used to characterize and improve understanding of spatial and temporal variability in sub-Saharan African water resources during the last century.

Nine major international river basins were chosen for examination primarily for their extensive, good quality flow by:   East Africa has had better rainfall station coverage than central Africa, although not as good as West Africa.

Figures 8 and 9 show that the Blue Nile has had a remarkably stable and robust relationship over time, which is somewhat surprising given the low number of rainfall stations contributing to the rainfall series and the complex large Cited by:   Northern Africa experiences highly variable rainfall, except along the coasts of Algeria and Morocco (Map 2).This region’s coefficient of variation—a measure of how much rainfall varies from the annual average—is greater than 45 percent, reflecting the erratic nature of rainfall in a region that gets little precipitation.

This paper begins with an overview of the African rainfall regime, noting in particular the contrast among various regions of the continent, followed by a description of the nature of climatic (i.e., rainfall) variability over Africa on time scales of decades and by:   The contribution of Cut-off Lows (CoLs) to precipitation and extreme rainfall frequency in South Africa has been quantified from station records over the period – Firstly, hPa CoL trajectories over Southern Africa and surrounding oceans were determined and their features thoroughly analyzed.

In a second step, using daily precipitable water, outgoing long wave radiation Cited by: Diagnosis of Seasonal Rainfall Variability over East Africa: A Case Study of Drought over Kenya Ongoma, V.1, 2, 3,T. Guirong2, B. Ogwang2, 4, J. Ngarukiyimana2 Abstract The primary objective of this study was to investigate the recent climate variability over theFile Size: KB.

To this end, the space-time patterns of decadal rainfall variability modes over East Africa and their predictability potentials using Sea Surface Temperature (SST) are investigated. The analysis includes observed rainfall data from and global SSTs for the period Cited by: P. Omondi, J.L. Awange OOFLARA.

"Decadal rainfall variability modes in observed rainfall records over East Africa and their relations to historical sea surface temperature changes." Journal of Hydrology. ;– Journal of Hydrology, 58 () 11 Elsevier Scientific Publishing Company, Amsterdam -- Printed in The Netherlands [3] SOME METHODS FOR TESTING THE HOMOGENEITY OF RAINFALL RECORDS T.A.

BUISHAND Royal Netherlands Meteorological Institute (K.N.M.L), De Bilt (The Netherlands) (Received J ; accepted for publication Aug ) ABSTRACT Cited by: There was a normal distribution of the sampled-temporal rainfall data with high goodness-of-fit (% to 96%) of the selected distribution showing continuity of the data from mother primary data thus high homogeneity [].Kolmogorov-Smirnov values (one-sided sample K-S test) showed K-S values ( to ) consistently lower than the K-S table value () for at probability indicating that an Cited by: The nature and causes of seasonal (July to September (JAS)) rainfall variability over tropical north Africa are investigated using a combination of empirical and modelling approaches.

Concentration is focused on three regions: the Sahel, Soudan and Guinea Coast. The Influence of Rainfall Variability on Arable Land Use at Local Level: Realities from Nzhelele Valley, South Africa Edmore Kori1,Tendayi Gondo2 and Rudzani Madilonga1 1Department of Geography and Geo-Information Sciences 2Department of Urban and Regional Planning University of Venda, Private Bag X, ThohoyandouLimpopo Province, South AfricaFile Size: KB.

of high rainfall events in the – period relative to – over much of South Africa. Kruger. shows increases in extreme rainfall indices over the southern Free State and parts of the Eastern Cape from to New et al. also show some evidence for increased rainfall extremes over parts of South Africa for the.

of East Anglia (UK) and rainfall records. Each value plotted in Figure 2 represents a Pearson product-moment correlation coefficient between estimate and CRU.K value for corresponding months in the year.

Correlation values remained Sunspot numbers: Implications on Eastern African rainfall. Regional expression of the climatic changes recorded at Lake Tana is evident from similar patterns of change in west Africa and in Nile discharge records from Cited by: THE DIURNAL VARIATION OF PRECIPITATION IN BRITISH EAST AFRICA [Thompson, B.W.] on *FREE* shipping on qualifying offers.

THE DIURNAL VARIATION OF PRECIPITATION IN BRITISH EAST AFRICAAuthor: B.W. Thompson.