Lesson Notes By Weeks and Term v4 - SHS 1
CLIMATE VARIABILITY
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CLIMATE VARIABILITY
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Subject: Agricultural Science
Class: SHS 1
Term: 1st Term
Week: 20
Grade code: 1.3.2.LI.2
Strand code: 4
Sub-strand code: 1
Content standard code: 1.3.2.CS.2
Indicator code: 1.3.2.LI.2
Theme: AGRICULTURE AND CLIMATE
Subtheme: CLIMATE VARIABILITY
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This lesson explores one of the biggest challenges facing Ghanaian farmers today: climate variability. Our weather patterns are becoming less predictable; the rains may come late, or stop too early, and sometimes we experience long dry spells or unexpected floods. These changes directly affect our crop yields, livestock, and livelihoods. To tackle these challenges, we need more than just new seeds or fertilizers. We need a new way of sharing knowledge and solving problems together. This is where the participatory extension approach comes in.
Part 1: Understanding the Core Problem - Climate Variability
First, let's be clear on the difference between weather and climate. Weather is the condition of the atmosphere over a short period (e.g., "It is raining in Accra today"). Climate is the average weather pattern in a place over a long period, usually 30 years or more (e.g., "The Upper East Region has a hot, dry climate with a single rainy season").
Definition: Climate Variability Climate variability refers to the significant changes or fluctuations in climate patterns over shorter timescales (e.g., a month, a season, or a year) compared to the long-term average. It's the reason why one year's rainy season might be much heavier or start much later than the "normal" season.
Examples of Climate Variability in Ghana: Delayed Onset of Rains: In the maize-growing belt (e.g., Ashanti, Bono Regions), farmers traditionally plant in March/April. If the rains are delayed until May, the entire growing season is disrupted, leading to lower yields. Increased Dry Spells: During the rainy season in Northern Ghana, there might be unexpected breaks in rainfall lasting for 2-3 weeks. This can cause young crops like millet and sorghum to wither and die. Intense Rainfall and Flooding: Coastal communities and areas around the White Volta basin may experience sudden, heavy downpours that cause flash floods, destroying farms and property.