Fragilecologies Archives
5 December 2002
A search on the Internet using the keyword “hotspots” turns up two categories of sites. One category focuses on positive things (interesting, fun, recreational): for example, skiing, scuba diving, resorts, dancing, singles hotspots, and so on. The other category of hotspots highlights negative things: coral bleaching, toxic pollution, disease, biodiversity loss, conflict hotspots, and so forth. “Hotspots” identification seems to have gained popularity, especially with respect to environmental change. Here, “hotspots” refers to locations and situations where the results of air-sea interactions in the tropical Pacific Ocean affect human activities and the environment in harmful ways. Some of those effects are only short-term, while others may have long-lasting implications.
Despite the fact that there are hotspots for just about every environmental problem one can name, there are few, if any, focused on interactive hotspots – for example, the interface between agriculture and forests, or the interface between cultivation and grazing. Interestingly, there is no explicit mention of El Niño hotspots. I would define these as regions that are likely to be affected by an El Niño event. In the mid-1980s, a couple of researchers compiled maps of El Niño’s likely impacts on temperature and rainfall (see maps below). They have been reproduced in hundreds of publications, both scientific and popular. The media like to use these maps in their popular science articles to explain what an El Niño event is and what it can, or might, do.


These maps are now almost twenty years old, and there have been some changes in where El Niño’s worldwide impacts might show up. For example, it seems that the relationship that may have existed before 1980 between an El Niño in the tropical Pacific Ocean and drought throughout India may not be reliable today. Other relationships (called “teleconnections” by scientists), however, do seem to have enough reliability for use by decision makers. While one should not expect for example a drought in the US Pacific Northwest every time there is an El Niño, the probability of a drought in the region does increase. Drought may be expected to occur, say, 80 percent of the time southern Africa when there is an El Niño of a certain intensity.
The intensity of an El Niño event can vary from weak to moderate to strong to extraordinary. A strong event is more likely to influence the climate conditions far from the Pacific Basin, whereas weak events are likely to have their strongest impacts in Pacific Rim countries. A list of likely El Niño hotspots might include, among others, the following:
- Drought in Zimbabwe
- Drought in Mozambique
- Drought in South Africa
- Drought-related food shortages in Ethiopia
- Warm winter in the northern half of the United States and southern Canada
- Heavy rains in southern Ecuador and northern Peru
- Drought in northeast Brazil (a region known as the Nordeste)
- Flooding in southern Brazil
- Drought and fires in Indonesia
- Drought in the Philippines
- Droughts in various South Pacific island nations
- Drought in eastern Australia
- Heavy rains in southern California
- Fewer-than-average hurricanes in the tropical Atlantic
- Coral bleaching worldwide
El Niño is a spawner of climate anomalies and climate-related hazards around the globe. Many groups focus on the forecast of its beginning and on tracking its development for 12 to 18 months. It pays to listen to their forecasts, even though they are not always correct. Often the actions that a society needs to take to mitigate or avoid the worst impacts of an El Niño-related societal or environmental impact are those from which society would benefit anyway: cleaning up our dry river channels so torrential rainwater can pass to the sea; repairing leaky roofs; shoring up bridges, rail lines, and roads that are in poor condition. El Niño forecasts, in fact, provide decision makers with the earliest possible warning of climate-related problems they might have to face.
Clearly, the science and art of forecasting El Niño are in their early stages. The maps above were composed almost two decades ago and are in need of updating. Nevertheless, for some locations around the globe, and for some socioeconomic activities worldwide, such information can provide a “heads up” to decision makers in climate- and weather-sensitive regions and sectors. Forewarned is forearmed, because such information provides power to those who choose to use it.
Emails are impersonal. No matter how hard one tries, transmitting warm and emotional thoughts by way of email is a difficult task. The pressure of time, the need to spell check, the pressure to type in a correct representation of one’s thoughts, the pressure to answer other emails, typing with two or three fingers in front of a 15- or 17-inch monitor – all these factors lead to an impersonal communication. An email also lacks a personal signature.
Letters, on the other hand, convey a much higher level of sincerity. There is little room for correction, unless a draft is first written and then a clean copy is made. People writing letters on paper must think through what they want to say, thought by thought, sentence by sentence, before it is written down. The letter-writer must go to the trouble of putting the letter in the mail. For centuries, writing on papyrus, animal skins, or parchment has been the preferred way to communicate. By analogy, writing on stone or clay tablets is, to me, more like writing down one’s thoughts in email.
Running his finger down the hand-written lists, he came across an item marked “book.” He asked, “you have a book listed here on March 3 (three years earlier), what was the name of the book and its author?” I said that if it was on my itemized list it was work-related, probably an environment or climate book. He continued down the column and said “Here is a book for $22.43. What was the book, and who was its author?” I gave the same answer as before.
There is hope and solution in the offing, however. The new young auditors, like the one that scrutinized every meager amount on my list of deductions a decade ago, should be given the task of reviewing these multi-billion dollar corporations, and the IRS accountants in charge of monitoring and scrutinizing the WorldComs and Tycos and Xeroxes of today should be sent to the minor league to audit the hand-written lists of deductions of everyday, hard-working Americans. Maybe, this way, those hard-working laborers would finally get a break on their taxes.
The
The IPCC assessment reports have been published five years apart, based on the research and review efforts of the scientists, beginning in 1990. To date there have been three major assessments. Lots of new information was included in the 2001 report, when compared to the first. There has been progress on most fronts, and the number of scientists who support the IPCC findings appears to have grown sharply, while those who oppose the idea that the climate is changing as a result of human activities has stayed about the same, with a few vocal spokespersons.
My primary concern centers on the frequency at which IPCC assessments have been undertaken. Several of my colleagues who have participated in the preparation of IPCC reports have voiced their reluctance to participate in yet another assessment so soon after the issuance of a report. Are scientists being burned out by the numerous meetings and writing assignments? The question people seem to be reluctant to ask is this: is it time to rethink the frequency of the IPCC reports?
After ten years of focused international research on global warming (most often referred to as climate change), I have come to believe that, aside from those groups dealing specifically with these scientific issues on a more or less daily basis, most people do not know what is meant by climate change. I say this because scientists frequently remind us that climate is constantly changing on all time scales – yearly, on decade and century time scales, and beyond.
abeling of the most dire changes in the global climate regime. They should be referred to as “deep changes.” The notion of
The pennies enter a simple equation. If you turn out your lights, you save money. If you walk a kilometer to buy milk rather than driving, you save fuel. These economics would be even truer if all energy sources were competing on the same basis by using the true costs to determine the market price of energy sources.
So, yes, climate change may be happening and we may be contributing to it. If so, we know what to do: use less energy, reduce greenhouse gas emissions, and tackle pollution. On the other hand, climate change may not be happening or we may not be contributing to it. If not, we still know what to do: use less energy, reduce greenhouse gas emissions, and tackle pollution.
Today the collection of such indicators and the computer model runs of more than a dozen research groups seeking to forecast the behavior of the ENSO cycle months in advance suggest that La Niña is on its way out. If it is, can an El Niño be far behind?
Downtown Crawford
A Crawford ranch
When I was a kid, decades ago, I used to travel the world over. But I had to do it vicariously, by reading the travel sections of the local Sunday newspaper and by collecting stamps.
