Environmentalists threaten us that because people produce carbon dioxide, average temperature on Earth increases and with the rise of temperature on Earth, the level of the oceans will rise and the water will cover huge expanses of land. The website express.co.uk:
"Study author Dr Svetlana Jevrejeva, NOC, said: “More than 600 million people live in low-elevation coastal areas, less than 10 metres above sea level.“In a warming climate, global sea levels will rise due to melting of land-based glaciers and ice sheets, and from the thermal expansion of ocean water.
“So sea level rise is one of the most damaging aspects of our warming climate.”
The study found a temperature rise trajectory of just 1.5C by 2100 will see average sea levels rise by up 1.7ft (0.52m).
But exceeding the UN 2C target by 2100 could see waters rise by 2.8ft (0.86m) or 5.9ft (1.8m) in a worst-case scenario."
As the website ipcc.ch informs us, in the worst scenario on the end of 21 century the average world temperature will increase about 6.4 degree of Celsius.
But what would be happened if the average world temperature would increase not 6.4 but 15 degree of Celsius?
We know that with global warming only ice on lands influences on sea level. The biggest lands covered by ice are: Antarctica and Greenland. Let's look at Greenland. The website tradingeconomics.com shows averate temperatures for Greenland which is shown below.
"Study author Dr Svetlana Jevrejeva, NOC, said: “More than 600 million people live in low-elevation coastal areas, less than 10 metres above sea level.“In a warming climate, global sea levels will rise due to melting of land-based glaciers and ice sheets, and from the thermal expansion of ocean water.
“So sea level rise is one of the most damaging aspects of our warming climate.”
The study found a temperature rise trajectory of just 1.5C by 2100 will see average sea levels rise by up 1.7ft (0.52m).
But exceeding the UN 2C target by 2100 could see waters rise by 2.8ft (0.86m) or 5.9ft (1.8m) in a worst-case scenario."
As the website ipcc.ch informs us, in the worst scenario on the end of 21 century the average world temperature will increase about 6.4 degree of Celsius.
But what would be happened if the average world temperature would increase not 6.4 but 15 degree of Celsius?
We know that with global warming only ice on lands influences on sea level. The biggest lands covered by ice are: Antarctica and Greenland. Let's look at Greenland. The website tradingeconomics.com shows averate temperatures for Greenland which is shown below.
If we take average temperature for the year is -18.047 degree of Celsius. It means even temperature increases of 15 degree still average yearly temperature will be below zero degree. We know that ice has big heat capacity and melts at 0 degree of Celsius. It means even in this case the Greenland's glacier should survive.
What about Antarctica?
Wikipedia informs us:
"The mean annual temperature of the interior is −57 °C (−70.6 °F). The coast is warmer; on the coast Antarctic average temperatures are around -10°C (in the warmest parts of Antarctica) and in the elevated inland they average about -55°C in Vostok."
It means, it is also below zero and Antarctic glacier should survives.
But, of course, Indonesians would have problem in this case. Their average temperature could increase until 40 °C. Average temperature in Indonesia, as the tradingeconomics.com informs is around 26 °C what is shown below in a picture taken from the mentioned website.
What about Antarctica?
Wikipedia informs us:
"The mean annual temperature of the interior is −57 °C (−70.6 °F). The coast is warmer; on the coast Antarctic average temperatures are around -10°C (in the warmest parts of Antarctica) and in the elevated inland they average about -55°C in Vostok."
It means, it is also below zero and Antarctic glacier should survives.
But, of course, Indonesians would have problem in this case. Their average temperature could increase until 40 °C. Average temperature in Indonesia, as the tradingeconomics.com informs is around 26 °C what is shown below in a picture taken from the mentioned website.
But probably it would never happened bacause in Indonesia and other zones around equator water would evaporate faster creating big clouds. Currently water in atmosphere in the zone around equator circulates like it is shown below in a picture taken from Wikipedia.
Humid air from equator comes to around 30° latitude, where loses water and becomes dry. This phenomenon is explained by the Hadley cell model. But with increasing temperature the amount of water in air (grams per cubic meter) increases also, what is shown in the picture below.
The growth of water amount in air is not proportional. It accelerates with temperature. It means when in Indonesia will be temperature around 40 degree amout of water will be more than twice bigger than at temperature 26 degree. Of course, live in temperature 40 °C with high humidity would be very hard but I do not think so that it could happen. With temperature increasing the equatorial Hadley cell will expand beyond 30° latitude. Moisture taken from equatorial area will be not lost so quickly and clouds from equator will reach higher latitudes. Deserts like the Sahara, the Gobi or the Atacama will be covered by forests. More water in atmosphere will eliminate dry, desert zones which occur around 30° latitude today. The dry zones will not move to North due to high humidity. Probably similar situation was several thousands years ago. Europe was not dry, desert place but as we read at the website qz.com:
"5,000 years ago the Sahara deset was home to people, animals, and lush vegetation.
As recently as 5,000 years ago, one of the world’s driest and most uninhabitable places, the Western Sahara desert, was home to a vast river system that would rank as the world’s 12th largest drainage basin if it existed today.
Theories that the Sahara was once home to waterways that sustained life from rhinos to humans and various species of fish have gained traction in the last few years. In 2013, researchers argued that, based on computer modeling of the Sahara as it existed 100,000 years ago, monsoon rains would have been heavy enough to feed three main rivers. Some paleohydrologists believe these waterways are the key to the answer of how humans migrated out of central Africa."
And the Gobi desert was also full of life thousands years ago about which we are informed by scienceinpoland.pap.pl website:
"Many thousands of years ago life flourished in the Mongolian Gobi desert. Archaeologists from Wrocław discovered traces of a rich settlement from the period of the Stone Age."
Steam is excellent greenhouse gas, so the more clouds, the average temperature of the Earth will be higher. Ok, let average temperature to rise of 15 °C. It does not mean that average temperature in Indonesia will be 40 degree. Steaming water absorbs heat from the environment. In Indonesian area ocean water will evaporate cooling surroundings, and next, clouds will transport heat far away to Siberia or New Zealand and their condensing and rain will warm atmosphere and grounds there. It means, temperature in Indonesia could not change or increase a little but temperature in Antarctica could increase about dozens degree due to green house effect. Because of big amount of clouds in atmosphere causing greenhouse effect the temperature of the whole world could be evened out. The picture below taken from the website quora.com explains how green house effect works. Heat at infrared radiation trying to escape to cosmic space is reflected back by clouds. The more clouds the reflection stronger and temperature of surface higher. Probably there is optimal amount of clouds over Earth's surface for the most effective green house effect. Too many clouds reflect solar radiation back to cosmic space. Of course temperature of surface of the Earth will be not warming up without end. Because of the Stefan - Boltzmann law temperature will stabilize quite quickly.
"5,000 years ago the Sahara deset was home to people, animals, and lush vegetation.
As recently as 5,000 years ago, one of the world’s driest and most uninhabitable places, the Western Sahara desert, was home to a vast river system that would rank as the world’s 12th largest drainage basin if it existed today.
Theories that the Sahara was once home to waterways that sustained life from rhinos to humans and various species of fish have gained traction in the last few years. In 2013, researchers argued that, based on computer modeling of the Sahara as it existed 100,000 years ago, monsoon rains would have been heavy enough to feed three main rivers. Some paleohydrologists believe these waterways are the key to the answer of how humans migrated out of central Africa."
And the Gobi desert was also full of life thousands years ago about which we are informed by scienceinpoland.pap.pl website:
"Many thousands of years ago life flourished in the Mongolian Gobi desert. Archaeologists from Wrocław discovered traces of a rich settlement from the period of the Stone Age."
Steam is excellent greenhouse gas, so the more clouds, the average temperature of the Earth will be higher. Ok, let average temperature to rise of 15 °C. It does not mean that average temperature in Indonesia will be 40 degree. Steaming water absorbs heat from the environment. In Indonesian area ocean water will evaporate cooling surroundings, and next, clouds will transport heat far away to Siberia or New Zealand and their condensing and rain will warm atmosphere and grounds there. It means, temperature in Indonesia could not change or increase a little but temperature in Antarctica could increase about dozens degree due to green house effect. Because of big amount of clouds in atmosphere causing greenhouse effect the temperature of the whole world could be evened out. The picture below taken from the website quora.com explains how green house effect works. Heat at infrared radiation trying to escape to cosmic space is reflected back by clouds. The more clouds the reflection stronger and temperature of surface higher. Probably there is optimal amount of clouds over Earth's surface for the most effective green house effect. Too many clouds reflect solar radiation back to cosmic space. Of course temperature of surface of the Earth will be not warming up without end. Because of the Stefan - Boltzmann law temperature will stabilize quite quickly.
With rising temperature glaciers of Greenland, Antarctica and mountain glaciers will melt. Siberian permafrost also. Everybody could suppose that if the great mass of ice will melt, the water from glaciers will come to oceans, and their level will increase. It may be or may be not also. Volume of water is 1/6 smaller than volume of ice with this same mass. So after melting water will be 5/6 of this volume of ice what we see today in Antarctica or Greenland. Water will penetrate all the rifts. In literature there are described underground water until depth of 4 km. It will surround all particles, creating bound water which density is 2 g/cm3. Areas of Canada, Siberia, Greenland, Antarctica will be covered by marshland. A lot of water will fall on the Sahara, the Gobi and other deserts creating rivers and lakes. Because of high temperature, higher humidity, lots of water and higher concentration of carbon dioxide from factories, vegetation will flourish on all the world. Plants will be taller because they will be able to draw water directly from the air. Of course other animals, funguses, bacteria will have a lot of food so the will develop also. Even bigger concentration of carbon dioxide is good for humans' health what we can read at the website nirvana.fitness. It suggests that in the past concentration of carbon dioxide was higher than today and people have adapted to it. So a lot of water will be stored not only in air, rifts, wetlands, bounded water but, also in living organisms. Paradoxically it could be happened that with temperature growth sea level will be lower than today. Certain reasons to think like that already exist. We can look in a picture shows growth of sea level from 1993 January 1st presented on the website climate.nasa.gov and placed below.
We can see that accuracy of the measurement is 4 mm. It means that maximum error between two measurements is 8 mm. It means that result 72 mm and 80 mm could be this same result 76 mm. We can notice on the graph that from the June 29th 2015 until April 25th 2018 practically nothing changed. It suggests that the sea level growth is saturated. Of course there were periods when sea level even decreased. Maybe today we have already reached the critical point when sea level stopped to rise and started to go down.
Let's summarize what will happen when the greenhouse effect will be increasing.
1. Because of human production of carbon dioxide temperature of atmosphere increases.
2. Water from oceans steams more intensively. More water is collected in atmosphere.
3. Great clouds are created, Hadley cells become bigger and rains fall on deserts creating lakes and rivers there. Water enters into sand and soil to big depths. Desert sand grains are surrounded by bound water.
4. Ice of Antarctica, Greenland, Siberia melt creating wetlands and swamps there.
5. Temperature on the all of the world becomes almost equal.
6. Life flourishes and organisms collect water in their bodies. Because of abundance of water and carbon dioxide plants become larger and higher.
These six points could lead to lowering the sea level. New lands will be habitable. Thanks to the more fertile plant growth and animals, humanity will be able to eliminate the problem of hunger without using to chemistry and gmo.
Probably situation described above took place in history. This is commemorated in the South American myths described by Cornellia Petratu and Bernard Roidinger in the book "Die Steine von Ica: Protokoll einer anderen Menschheit", as well as in African myths popularized by Credo Mutwa and to David Icke. People survived it. It means that the temperatures were then bearable. Some inconvenience would be a permanent lack of the Sun in the daytime and stars and the Moon at night. The sky would be overcast all the time. But higher volcanic activity could be a threat to this state of affairs. Volcanoes introducing dust into the atmosphere would create condensation centers of water vapor, which would disturb the balance of water contented in the air and intensify rainfall. Rains would remove partially cloud cover, cloudless sky would be revealed, heat would be radiated into cosmic space and Earth would be cooled. And because of it rains would be more intense what could lead to great flood. Such a situation would last until the next level of equilibrium would be reached at much lower average temperature.
Let's summarize what will happen when the greenhouse effect will be increasing.
1. Because of human production of carbon dioxide temperature of atmosphere increases.
2. Water from oceans steams more intensively. More water is collected in atmosphere.
3. Great clouds are created, Hadley cells become bigger and rains fall on deserts creating lakes and rivers there. Water enters into sand and soil to big depths. Desert sand grains are surrounded by bound water.
4. Ice of Antarctica, Greenland, Siberia melt creating wetlands and swamps there.
5. Temperature on the all of the world becomes almost equal.
6. Life flourishes and organisms collect water in their bodies. Because of abundance of water and carbon dioxide plants become larger and higher.
These six points could lead to lowering the sea level. New lands will be habitable. Thanks to the more fertile plant growth and animals, humanity will be able to eliminate the problem of hunger without using to chemistry and gmo.
Probably situation described above took place in history. This is commemorated in the South American myths described by Cornellia Petratu and Bernard Roidinger in the book "Die Steine von Ica: Protokoll einer anderen Menschheit", as well as in African myths popularized by Credo Mutwa and to David Icke. People survived it. It means that the temperatures were then bearable. Some inconvenience would be a permanent lack of the Sun in the daytime and stars and the Moon at night. The sky would be overcast all the time. But higher volcanic activity could be a threat to this state of affairs. Volcanoes introducing dust into the atmosphere would create condensation centers of water vapor, which would disturb the balance of water contented in the air and intensify rainfall. Rains would remove partially cloud cover, cloudless sky would be revealed, heat would be radiated into cosmic space and Earth would be cooled. And because of it rains would be more intense what could lead to great flood. Such a situation would last until the next level of equilibrium would be reached at much lower average temperature.