Myth: Climate change will have some benefits. Climate alarmists need to take a breath and weigh the pros and cons of global warming.
Fact: The cons outweigh the pros by a large margin, and the cons are far more extreme in nature. This has been understood for years. Many of the alleged benefits are based on a misconception of how global warming will actually affect out atmosphere and oceans.
Global Warming: Pros and Cons
There are those who claims that climate change will have some positive impacts on the Earth, and that this needs to be weighed against the negative outcomes. However, the positive/negative outcomes have been long since compared, and the concern over climate change is due to the overwhelming negative results.
One such example: CO2 is GOOD for plant, and we should weigh this and other positive aspects against their negative counterparts.
The effects have already been published
Here are some snippets from a 2008 IPCC Paper:
However, the large-scale implications of CO2 –water interactions (i.e., at canopy, field and regional level) are highly uncertain. In general, it is recognised that the positive effects of elevated CO2 on plant water relations are expected to be offset by increased evaporative demand under warmer temperatures.
Many recent studies confirm and extend TAR findings that temperature and precipitation changes in future decades will modify, and often limit, direct CO2 effects on plants. For instance, high temperatures during flowering may lower CO2 effects by reducing grain number, size and quality (Thomas et al., 2003; Baker et al., 2004; Caldwell et al., 2005). Likewise, increased water demand under warming may reduce the expected positive CO2 effects.
Impacts of climate change on irrigation water requirements may be large. A few new studies have further quantified the impacts of climate change on regional and global irrigation requirements, irrespective of the positive effects of elevated CO2 on crop water-use efficiency.