Sentences with phrase «background trend»

Even with a long - term background trend of rising temperatures, other climate factors contribute to yearly ups and downs.

To me, the more subtle background trend is the significant one to watch because it's like the long - term warming of the climate itself.

On the basis of the above two charts it seems that the global background trend in stratosphere and troposphere is not significantly affected by volcanic events or individual El Nino events.

This single massive event reversed a 40 - year background trend toward decreased plant diversity in undisturbed woodlands.

Interestingly one can see subdued versions of the 1993 volcanic spike and the El Nino spikes of 1998 and 2010 but again they are short term effects only and do not alter the flat background trend.

My opinion expressed elsewhere is that almost all the temperature changes we observe over periods of less than a century are caused by cyclical changes in the rate of energy emission from the oceans with the solar effect only providing a slow background trend of warming or cooling for several centuries at a time.

The irregularity of the temperature changes within those main background trends can not have been anything to do with humanity and can adequately be catered for by varying oceanic effects on multidecadal time scales.

Continuous screening is a growing background trend.

Throughout the altimeter era, it has been recognized that sea level rise is not constant but varies considerably about the background trend, with the largest of these departures coinciding with the warm and cold phases of the El Niño Southern Oscillation (ENSO) such as in 1997 — 1998 (Fig. 2).

Sparkling silver sequin tops today at the peak of fashion popularity, due to the background trends for retro fashion and the new cosmic futurism with its desire to clothe in metallic all the stuff around.

The fact that the change in background trend to flat occurred in the stratosphere a few years before the change in background trend to flat in the troposphere is probably due to the thermal inertia of the oceans.

They do not appear to affect the background trend.

It's a natural process, but beginning a trend calculation with such an event obliterates the background trend in subsequent years.

Or does the background trend in Figure 3 represent the global warming «forced» signal of an ever - increasing sea ice loss, plus natural variability (Bitz)?

Watts contends that if the global data were properly adjusted for urbanization and station siting, and land use change issues were addressed, what would emerge is a cyclical pattern of rises and falls with much less of any background trend.

The most economic way to parse that data is to assume a persistent background trend over the first three quarters of the twentieth century interupted by a sharp upward trend from the mid 30s to mid 4s, after which temperatures relaxed back to the background trend value.

Take that as your «background trend».