Physical evidence has been taken from reasonably complete global records of surface temperature which are available beginning from the mid-age 19th Century to date. Widespread instrumental measurements are available such as the radiosonde balloon which is a small instrument package suspended below a large balloon inflated by helium gas (also called a weather balloon). At a time when the balloon reaches 20-25 feet in diameter, it bursts, and a small orange colored parachute lets the instrument package land.
Proxy data is the study of past climates reconstructed from fire scars and tree rings. Proxy indicators typically must be calibrated against modern instrumental information to yield an overall view of measured reconstruction. This data can be found in the Earth itself in cores of ancient ice that tell us about past temperatures (see below). Climate destabilization is discussed in “The Larger Spiritual Order & Universal Scheme of Things” – Chapter 2
For earlier periods, most of the evidence is indirect… changes in climate are inferred from changes in proxies which are indicators that reflect climate; such as, vegetation, ice cores, sea level changes, glacial geology, and the study of changes in climate and past events by comparing the annual growth rings of trees or old timber, corals, lake and ocean sediments, or tree pollen. Wide and thick tree rings indicate a fertile and well-watered period, while thin and narrow rings indicate a time of lower rainfall and land that is a less-than-ideal growing conditions. Also, human archives reveal historical records or diaries. For more complete information and graphs, see the categories below and in the next post and also the link provided below:
Vegetation: A change in climate would cause a change in the type, distribution, and coverage of vegetation. A gradual increase in warmth in a region shall lead to earlier flowering and fruiting events which shall drive a change in the timing of life cycles of dependent organisms. Cold shall cause plant bio-cycles to become slower. Large, faster or more radical changes, however, may result in vegetation stress, rapid plant loss, and desert-like changes in certain circumstances. Three hundred million years ago, when rainforests covered the equatorial region of Europe and America, changes of climate devastated these tropical rainforests and abruptly fragmented the habitat into isolate islands causing the extinction of many plant and animal species.
Ice Cores: Cores of ancient ice can reveal information about past temperatures. The air trapped in bubbles from an ice sheet can be used to show a link between temperature and global sea level variations. It can also reveal the CO2 variations of the atmosphere from the distant past…well before modern environmental influences. The study of these ice cores has been a significant indicator of the changes in CO2 over many millennia and continues to provide valuable information about the difference between ancient and modern atmospheric conditions.
Artic Sea Ice Loss: The decline in Arctic sea ice, both in extent and thickness, over the last several decades is further evidence for rapid climate destabilization. Satellite observations show the Artic sea ice is now declining at a rate of 13.3 % per decade, relative to the 1981 to 2010 average.
Sea Level Changes: Sea levels are now rising causing storms of much magnitude. Seas are rising one foot per Century. To measure sea levels prior to instrumental measurements, scientists have dated coral reefs that grow near the surface of the ocean, coastal sediments, marine terraces, sedimentary grains usually composed of calcium carbinate, iron, or phostrate-based minerals in limestones, and nearshore archaeological remains. The most common methods used are uranium series and radiocarbon-dating. Cosmogenic radionuclides-dating (interaction of cosmic radiation with the atomic nuclei and within upper few meters of Earth’s surface) is sometimes used to date terraces that have experienced relative sea level fall.
Over a great length of time, climate destabilization could force Earth’s inhabitants to live near the two poles causing partial extinction of the human race, because it would create people not being able to live in the destroyed areas of the globe. In addition, eventually in the “Universal scheme of things” a new planet being born from the Sun would put Earth farther away from the Sun. This, however, would not upset the Spiritual aspects of the Universe as a race could be born on another planet.
Next month’s blog post on climate destabilizaton shall be Part IV and the last blog on this subject.