How Scientist Learns About Past Global Temperature and Climate - Essay Sample

Introduction

In the past, various ways were being used to study the global temperature and the climate. The surrogate measure is one of the ways that was dominated most. To predict the cold, dry spell, it usually was being anticipated by the increase in the existence of pollen being passed by a particular kind of flower. Therefore, these flowers were very accurate in climate predictability. Secondly, the retreat by mountain glaciers was a good indicator as well. Notably, its growth usually is being affected by precipitation, temperatures and too much sun as well. Other than that, looking at the ice core, they have some layers that do allow accumulation of dust, especially during summer. Evidently, the thickness of ice cores is definitely a sign of precipitation. Similarly, the determination of the dryness of land was being predicted by the amount of dust within the proxy. The ice had got a trend of trapping air bubbles at the same time there is compression by the snow all these were clear indications of global temperature and climate.

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In a broader perspective, the scientist went ahead to look at the two isotopes of oxygen. Having discovered that one is more cumbersome with two more extra neutrons. Therefore, it would mean that water with 018 has got a low evaporation rate. Significantly, this would mean that, during hot weather, the surface water of an ocean loses more 018 than the surface water in cold weather. In return, it usually affects the diatoms that use oxygen from the pool in the formation of calcium carbonate.

Additionally, the analysis done on historical records has sounded very vital in the study of temperature and climate. Oats and Rye have been studied in the past, and the result is that, their growth and harvest can quickly be done under cold temperatures. Other than that, satellites that are temperature based have been in existence for the last 20 years, and their work was to predict climate on a yearly basis. An along similar lines, instrumental global temperature records as well have been available since 1850. Education wise, paleoclimatology as the study is where temperature and climate data are studied, it also gives some good knowledge of understanding on how the tradition temperature and climate used to behave.

The use of ocean sediments is another way used by scientist to study temperature and climate. It has proved that those sediments from the very bottom of the ocean are of organic or oceanic origin. Usually, they give comprehensive information about the wind speed, temperature, and direction in case of terrestrial. Similarly, under the study of terrestrial sediments. Typically, three rings always give enough information regarding the past temperature and climate whereby, the thickness and color of the ring.

Similarly, many years back temperature records have been drilled from polar ice caps, glaciers, and mountaintops by ice cores,

The research was done under pollen analysis, one gentleman, is spending a lot of time investigating the tectonic movement by the continents for a period of not less than 2 billion years down the line. However, the result of the investigation later became a representation of the climate for the same two billion years.

Conclusion

In the study of climate, the study of fossils by paleontologist have given weight the power of using preserved fossils in the rock records. To understand the past environment and climate. For instance, the reason why cactus grows in the desert and at the same time why the polar bear is associated with cold northern latitudes. Keen enough, these associations give a clear picture of how the world has changed for the past 542 million years.

References

Michael Jorgensen, 22 Jun 2004, post at www.freenewmexican.com/news/981.html

Leviticus, S et al. (2000)"warming of the world ocean "Science, 287:2225.