Chapter 154 Although it hurts Tianhe, it doesn't hurt...
Lu An only answered one word, but this word made Li Fengting very excited on the spot, "Is this serious? Is it really technically possible?""
Hearing this, Lu An An once again answered affirmatively: "Yes."
In the previous life, Lu An had already lived in a world with a first-level planetary civilization. At that time, human technological power was so powerful that even the earth's angular momentum could be precisely controlled.
Climate control?
This is not a big deal at all.
The human civilization in the previous life, before it became a first-level civilization, already had the ability to actively manage the depth of the earth's climate.
To put it more down to earth, humans have the ability to control the climate through artificial intervention.
Lu An looked at Li Fengting and said: "The atmosphere is a typical chaotic system with unpredictability. Even with the analytical solution of Navier-Stokes, it is an ultra-highly accurate prediction that approaches the extreme value infinitely but cannot cover the whole situation. Just like the speed of light, it can be infinitely close but cannot exceed the speed of light, even if it is equal to the speed of light."
"The reason why it cannot cover the whole situation is that the uncertainty principle of quantum mechanics cannot be circumvented at the micro level. This is a physical phenomenon that must be faced."
"But—." Lu An suddenly changed the subject: "This does not mean that intervention is not possible. Atmospheric intervention control at the macro level can be achieved with relatively high precision."
At this moment, Li Fengting didn’t listen to any of Lu An’s physical concepts such as quantum mechanics, light speed, and chaotic systems.
He only listened to one thing, that is, Lu An made it clear that he could control the weather.
"Okay, great, I knew you wouldn't disappoint!" Li Fengting was so excited that he couldn't help but cheer.
· Weather control is generally considered impossible at this stage. Other experts say that the current level of human science and technology is far from enough to have such a strong ability to actively manage nature.
But since Lu An repeatedly said that he could do it, Li Fengting no longer doubted it.
As for how to do it, he didn't care. This was something Lu An should think about.
At this time, Lu An said unhurriedly: "Although it can be done, it is still very difficult at this stage."
Li Fengting also quickly calmed down from the excitement: "Oh? How difficult is it?"
"It is not a technical problem."
After a pause, Lu An replied: "The difficulty is mainly reflected in three aspects. The first is that the investment is quite huge, requiring a budget of tens of billions, especially the consumption of computing resources; the second is that the scale of the project is large and complex, requiring coordination among multiple departments; and the third is that due to the first two problems, the time cycle is long and cannot be achieved in a short time. "
"For example, in terms of data collection, global meteorological satellites, visible light, infrared, microwave, etc. need to be integrated."
“There are also real-time massive data from ground and ocean buoys, sounding balloons, drones, ionospheric detectors, temperature, pressure, humidity, wind speed, turbulence intensity, aerosol concentration, etc.”
"The more data, the higher the accuracy. With the support of these data, I can build global and regional nested ultra-high-precision atmospheric dynamics models on star streams and supercomputers."
Lu An drank a glass of water to moisten his throat. Then he continued:
"This model can accurately describe all physical processes from global circulation to local micro-scale discontinuities, and perform molecular-level precision simulations of water vapor transport, condensation nuclei, ice crystal formation, collision growth, and energy exchange of cloud physical processes."
“Precisely locating those critical nodes in the atmospheric system that are sensitive and can trigger huge chain reactions with small perturbations, I call them “strange attractors” or “leverage points”, which is the identification and intervention of “butterfly effect” nodes. ”
“For example, the weak fluctuation points of the high-altitude jet stream in a specific area; the key convergence and divergence areas on the water vapor transport channel; the core convection triggering area in the embryonic stage of a potential storm system; the vulnerability of the stable layer structure that inhibits the formation of precipitation over arid areas, etc.”
Because such operations of climate intervention were so common in his previous life, even the amount of solar radiation energy received by the earth,
Humans at that time could actively manage it.
Li Fengting didn't understand these specific technical issues at all. He waved his hand and said, "I want to know now, if possible, how to intervene and control it?"
Hearing this, Lu An thought about it without saying a word, and Li Fengting was also very patient not to disturb his thinking.
After a while, Lu An replied: "Identify the key nodes and deploy a movable energy platform to carry out intervention with extremely small volume and high precision."
Li Fengting quickly asked: "For example?"
Lu An replied: "For example, deploying high-altitude drones or airship platforms in the stratosphere and troposphere. By focusing the laser MW radio frequency capabilities carried by the platform, a very small volume of air can be precisely heated at identified key points, artificially creating tiny temperature and pressure disturbances, guiding the direction of airflow or triggering and suppressing convection."
“The release of catalytic substances and precise spraying of cloud condensation nuclei, such as silver iodide, new hydrophilic nanomaterials or ice nuclei, etc., at the most suitable time, place, and height, greatly improve the efficiency of cloud droplets into raindrops or ice crystals, and achieve on-demand precipitation or cloud elimination and rain reduction.” In the fog area, highly efficient hygroscopic particles are released to promote the rapid increase and settlement of fog droplets to achieve fog elimination. "
"Then fixed or mobile platforms are deployed on the ground or sea surface, and large phased array microwave or laser transmitters can be deployed to accurately output energy to specific atmospheric layers, such as the inversion layer, to heat local air, destroy stable structures, promote the development of convection or dissipate the inversion layer."
"There are also heat and cold sources on the water surface. Floating platforms can be deployed in specific sea areas to change the local sea surface temperature, affect water vapor evaporation and sea vapor capacity exchange, and indirectly control the weather in nearby areas."
After Lu An finished speaking, Li Fengting generally awarded the general, and couldn't help but say to himself: "Just listening to what you said, I can feel that this does require a huge investment of resources. No wonder you said this is a huge project with a budget of 100 million yuan."
At this time, Lu An looked at Li Fengting: "Active climate management is an extremely large and complex system project that requires a global-scale, ultra-high-precision real-time monitoring network and computing power, as well as a highly reliable global deployment intervention platform."
“This will inevitably lead to geopolitical conflicts. Climate intervention will definitely trigger a “weather war” and global panic. Interfering with the weather of one country or one place will inevitably affect neighboring countries and even the global climate.
Li Fengting couldn’t help but nodded. Geographical issues are indeed more difficult.
After a while, Li Fengting looked at Lu An and asked: "Does it have to be carried out on a global scale? Can't it be done in a local area? For example, it is limited to the country, only to a local area, so there are no geographical problems."
Lu An immediately replied: "Of course this is possible, and it is relatively easier, because the data complexity is greatly reduced."
As soon as these words came out, Li Fengting's eyes lit up.
But Lu An immediately changed the topic: "But this will become more troublesome, and there are many potential dangers."
Li Fengting asked curiously: "Oh? How do you say this?"
Lu An replied: "Because the second law of thermodynamics is the law of entropy increase."
Entropy is a physical quantity that measures the degree of chaos or disorder of a system. An ordered state corresponds to low entropy, and a disordered state corresponds to high entropy.
In a closed isolated system, the entropy of the system always tends to increase, that is, evolution from order to disorder, and this process is irreversible unless energy is input from the outside.
For example, if a cup is broken and cannot be restored, the room will become more and more chaotic if it is not tidied for a long time.
When people tidy up a room, the outside world inputs energy into the room, thereby reducing the degree of disorder. The same principle applies to remaking a broken cup, but the entropy does not really disappear or reduce, but is transferred out.
Including humans themselves, living things maintain local low entropy by exchanging material energy with the environment, but still follow the law of entropy increase as a whole. Schrödinger's "life relies on negative entropy for survival" refers to the mechanism to resist entropy increase.
Lu An said methodically: "If the entire earth is regarded as a closed and isolated system, our country, as a local area of this system, can maintain a low entropy state in the local area through the exchange of matter and energy, but the entropy of the earth as a whole will increase."
So, if we actively manage the atmosphere domestically, make the domestic weather environment orderly, and achieve local entropy reduction,
However, the overall disorder of the global atmospheric environment is still increasing and is irreversible. "
Li Fengting heard this and immediately asked: "Is there a better solution?"
Lu An replied: "Of course there is, that is to actively manage the global climate and treat the solar system as a larger closed system,
Then the earth can be regarded as a local area within the solar system, and the entire earth is maintained in a low-entropy state through the exchange of matter and energy. In the same way, the solar system is included in the Milky Way as a subset, and the total entropy of the Milky Way increases irreversibly.
But the solar system, as a local region, can also maintain an orderly low-entropy state.
Li Fengting thought for a while and looked at Lu An and asked: "If the earth is regarded as a set, and our country is regarded as a subset to achieve entropy reduction in local areas, what impact will it have?"
Lu An thought for a moment and answered: "Simply put, the weather can be smooth and pleasant at home, but the global climate will become more chaotic and disorderly, and various climate abnormalities and extreme weather will occur abroad."
Hearing this, Li Fengting nodded involuntarily and said: "~, I understand, it hurts the harmony of heaven but not the republic, right?"
Lu An was stunned for a moment, then smiled and said: "You can also say that."
You release all the entropy increased by the domestic climate into the global climate. The domestic climate is indeed smooth and the environment is pleasant.
But the increase in entropy is irreversible. Although the entropy of the local area decreases, the global entropy increases, so the disorder of the global climate will increase significantly.