Lyons sees a role for oxygen in evolutionary changes, but his own work with molybdenum and other trace metals suggests that the increases in oxygen just before the Cambrian were mostly temporary peaks that lasted a few million years and gradually stepped upward (see «When life sped up»). (scientificamerican.com)
Positive forcing at seasonal to inter-annual scales leads to an average global surface temperature drop from La Nina influence but recharging of OHC (longer term gain), while reduced forcing allows El Nino conditions and temporary peaks in global average temperature, and OHC reduction (longer term loss). (judithcurry.com)
In essence, the report says, the $ 24 billion in such spending in 2009 needs to be the new floor for such investments, not a temporary peak. (dotearth.blogs.nytimes.com)