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Database - United Nations in Bangladesh

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Climate 179<br />

Table 10.2.5 Changes <strong>in</strong> Temperature, Precipitation and Evaporation<br />

Year<br />

Average Temperature Average Precipitation Changes <strong>in</strong><br />

Temperature Increase 1 Precipitation Increase 2 Evaporation 3<br />

W M Ave W M Ave W M Ave W M Ave W M Ave<br />

°C °C mm/month mm/month<br />

Base<br />

1990<br />

19.9 28.7 25.7 0.0 0.0 0.0 12 418 179 0 0 0 0.6 14.6 83.7<br />

2030 21.4 29.4 27.0 1.3 0.7 1.3 18 465 189 +6 47 10 0.9 15.8 83.9<br />

2075 22.0 30.4 28.3 2.1 1.7 2.6 00 530 207 -12 112 28 Inf 135 87.9<br />

Source : Huq et. at. (1999)<br />

Notes<br />

: (1) W stands for witner, M stands for monsoon, Ave stands for average, and Inf stands for <strong>in</strong>f<strong>in</strong>ity.<br />

(2) Estimated values obta<strong>in</strong>ed by correlat<strong>in</strong>g model output data with the observed data.<br />

(3) Estimated based on model output data regard<strong>in</strong>g rate of temperature change.<br />

(4) Estimated us<strong>in</strong>g Langs Index and expressed <strong>in</strong> terms of Aridity Index.<br />

Table 10.2.6 The Fluctuations of Values of Climatic Parameters Considered by Huq et. al. (1999) with Respect to their<br />

Values under Base-year (1990) Situation<br />

Parameter<br />

2030 2075<br />

W<strong>in</strong>ter Monsoon W<strong>in</strong>ter Monsoon<br />

Temperature (°C) 2 0.65 3 1.5<br />

Evaporation (%) 10 2 16 5<br />

Precipitation (%) -3 11 -37 28<br />

Discharge (%) -5 20 -67 51<br />

Watershed development (%) 6 100<br />

Sea level rise (cm) 30 70<br />

Source: Huq et. al. (1999)<br />

10.3 Natural Disaster<br />

Table 10.3.1 Chronology of Major Cyclonic Storms and Tidal Surges <strong>in</strong> <strong>Bangladesh</strong><br />

Year of Month and Date Affected<br />

Occurrence of Occurrence Area<br />

Nature of the Phenomenon<br />

Approximate Loss/Damage<br />

1797 May-June Chittagong Most severe Every hut levelled and 2 vessels<br />

sunk <strong>in</strong> Chittagong port<br />

1822 May Barisal Most severe 40,000 people killed and 100,000<br />

cattle lost<br />

1876 October Meghna Most severe storm wave (10-45 feet) A great number of people killed and<br />

estuary<br />

enormous property lost by tidal bore<br />

1897 October Chittagong Hurricane reached maximum 14,000 people were killed and another<br />

<strong>in</strong>tensity with series of storm waves 18,000 died <strong>in</strong> subsequent epidemics<br />

1960 Oct. 9-10 Eastern Severe cyclonic storm 125 miles per 3,000 people reported killed<br />

Meghna hour, maximum storm wave 10 feet<br />

1960 Oct. 30-31 Chittagong Severe cyclonic storm 130 miles per 70% build<strong>in</strong>gs <strong>in</strong> Hatiya blown off, 2 large<br />

hour, maximum storm wave 20 feet ocean l<strong>in</strong>ers capsized <strong>in</strong> Karnaphuly river<br />

and 8149 people killed<br />

[Contd.]

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