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climate change is already affecting

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global food production and it will

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probably have even more of an impact in

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carbon dioxide or co2 a major greenhouse

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gas is a primary cause of global warming

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human activity provides a major source

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of co2 in our atmosphere by burning

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fossil fuels the rate of increase in

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global warming due to greenhouse gases

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is very likely unprecedented within the

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past 10,000 years or more but plants use

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carbon dioxide to grow so shouldn't

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warmer temperatures and more carbon

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dioxide be a good thing for agriculture

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if it were just the carbon dioxide going

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up in the atmosphere agriculture would

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would - all the crops would just be

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smiling and say great because the high

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co2 is good for photosynthesis so that

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in and of itself it would be good

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climate has an effect upon agriculture

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in several ways one would be in the case

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of the far north you may have a longer

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growing season so areas presently where

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you can't grow certain crops because

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it's too cold or the growing season is

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too short you might be able to grow

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these crops there as conditions warm up

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in those areas when we then add in the

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other effects of climate change let's

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first just talk about higher

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temperatures then the story becomes more

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mixed while a warmer climate might mean

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some new growing regions our major

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agricultural areas will likely face

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scientists predicted in many areas on

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earth there will be more droughts more

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fires and warmer temperatures

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while a few places may experience cooler

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temperatures more rainfall or more

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intense flooding vulnerability to

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climate is uneven across the world the

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agricultural studies show that in the

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mid and high latitudes the agriculture

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there should actually be ok for at least

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a while before the really big

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temperature changes set in but in the

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low latitudes where it's hot already and

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where there is more of their more arid

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areas that climate change will affect

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those agricultural systems negatively

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right from the beginning because the

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vast majority of developing countries

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are located near the equator these

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already vulnerable populations are right

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in the bullseye of climate change in the

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next 40 years there could be 2 billion

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more people to feed much of this

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population growth is expected to impact

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countries already facing food security

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issues so climate change threatens to

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exacerbate their risk for inhospitable

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growing conditions and lack of access to

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food our population is increasing and

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yet the land on which crops can be grown

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is not we really have plateaued in our

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ability to expand yields globally and so

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in all the places where we are have

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extremely highly productive systems

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those regions are only able to increase

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their yields by 3 or 4 percent and while

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our population is growing by 8 or 9

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climate change undoubtedly affects us

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all so our responses need to be global

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in nature NASA satellites give us a big

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picture continuous view of our changing

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climate and how it's already affecting

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us as a species by providing free

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satellite data to anyone around the

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world

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NASA is playing a tremendous role for

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understanding of agricultural production

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scientists in their own countries can be

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managing their agricultural systems as

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the climate is changing it's important

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to have these data in a continuous way

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because the more data you have then you

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know the behavior with respect to time

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so the continuity or the continuum of

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the data becomes really really important

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NASA satellites provide crucial

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observations about how our home planet

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is changing continued data from these

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satellite missions provide information