2
Rainy Days
3
Cyclone
4
Maximum temperature
5
Flooding
risk of soil erosion and
occurrence of landslides.
Decrease rainy days but intensity
will be higher than normal,
growing periods may shorten by
approximately 30 days
Increase intensity and occurrence
and may trigger landslides and
flooding of coastal areas.
Increase by three percent, more
frequent and persistent El Niño
episodes, and increased
evaporation. Crop duration
shortened between one and four
weeks. Drought will be longer
and more intense, heat waves
occurrence.
Increase flooding depth,
frequency, intensity, and severe
landslides. Submergence of
coastal communities and coastal
erosion
6
Ground Water Potential
(GWP)
Decrease water availability, poor
quality, and salt intrusion
8
Cloudiness
Increase in total cloud cover,
decrease photosynthesis. Clouds
regulate the amount of sunlight
received by the surface and so
influence evaporation from the
surface, which in turn influences
cloud formation
Rosenzweig and Parry,
1994
IPCC 2007
IPCC 2007
IPCC 2007
NOAA, 2007
IPCC 2007,
Brackenridge, G.R. and
Anderson, E. (2004)
Dartmouth Flood
Observatory USA (2009)
IPCC 2007
Godilano, E.C. 2005
NOAA, 2007
NASA Water Vapor
Project (NVAP) 1992
Source: Department of Agriculture Policy and Implementation Program on Climate Change
Impacts on crops
As to how the production of crops would be affected most by climate change, results vary. Most argue,
however, that climate change would affect different crops differently. Lobell and Field (2007) note that for
crops that rely too much on water such as rice and soybean, precipitation would be key in explaining the
effect of climate change but for other crops, temperature should be considered.
In the Philippines, agricultural production, according to Buan, et al. (1996), is “traditionally concentrated
on a few main crops [with] rice and corn [as] the major food crops” (p.42) and corn acts as a major substitute
for rice especially for Central Luzon and “is the main ingredient for livestock feeds, food products, and is
important in industrial uses.” (p.42). On the other hand, “coconut and sugarcane are the major commercial
crops that constitute important export commodities” (p.42). Buan, et al. (1996) note that both rice and corn
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