The graphic above shows the reappearance of El Nino. The graphic is the warm water anomoly graph for Nov. 8th, 2003. El Nino is visible as a red triangular patch off the West Coast of South America.
The graphic above shows the current extent of drought in the United States, with the dark red areas being extreme drought and the black patches being exceptional drought, while the shades of yellow to brown indicate 'drought' to 'severe drought'.
The effects of El Nino usually result in more drought in the Northwestern United States and Western Canada, including such regions as Washington, Oregon, Idaho, Montana, and Wyoming. In the Southern most regions of the Southwestern United States it is typical for El Nino to bring more precipitation, while the effects are ambiguous in the central western area of the United States.
Global Temperature change
The amount of CO2 in the atmosphere, one of the major greenhouse gases has increased by about one third, and while controversy continues to rage about 'natural global warming', it is ridiculous to suggest that greenhouse gas can increase at this rate without increasing the greenhouse effect (this position is illogical and contradictory). The rapid increase in world temperatures corresponds to an increase in the rapidity of the El Nino phenomena, corresponding to the sharp rise in the graph over the last few decades (hardly a coincidence).
Since the 1970s the pattern of El Nino oscillations have become more frequent (9 El Ninos, occuring on average every 2.2 years) while the opposite phenomena, La Nina, which cools the water in the region, has only occured once (it used to be that there were equal numbers of El Ninos and La Ninas, which is why the phenomena was referred to as the southern Oscillation in the past, but due to what can only be global warming, the frequency of El Nino has increased (now coming every two years instead of the average rate of 7 years in the past) and the La Nina phenomena is has almost disappeared, which means that the souther oscillation is no longer an oscillation. The period from the mid 1970s to the present time is unlike any other period in history in this regard, and thus is of great interest to scientists. This corresponds to a rise in global temperatures of half a degree in the last three decades, and is an indication of how astonishly sensitive the global climate is to even small alterations. Just a tiny change of temperature in a tiny patch of ocean (the El Nino warming) causes patterns of droughts and flooding in different places all over the world. It really is remarkable phenomena, and the frequency has increased in the last 30 years while la Nina has disappeared, all of this due to one half a degree in global temperature change.
El Nino could bring some drought relief, to the Southern part of California and Southern Nevada and Southern New Mexico, while worsening drought in the North West and Western Canada. El Nino is also known to cause droughts in Australia and in sometimes in Southern Africa, and also has been known to cause dryness and forest fires in the Amazon, destroying rain forest every couple of years, hardly something the planet needs at the present time. A constantly returning El Nino is also bad news for the forests in the North Western United States. already suffering from a drought that first began to develop in 1996 and has grown steadily worse ever since...