Chapter 1152: Repay the enemy in the same way
Chang Haonan's thinking is basically the same as in the past -
It is good to get support from superior leaders.
But if you can support your superiors in turn and push the other party to move in the direction you want, that would be obviously better.
A lot of people actually understand this truth.
But understanding is one thing, implementing it is another.
If you really want to do this, on the one hand it is very difficult.
Not only must you have strong skills, but you must also have enough insight. Otherwise, if you spend a lot of effort and finally find that your efforts are in the wrong direction, all your efforts will be in vain.
On the other hand, the risks are also great.
If something goes wrong, it may be self-defeating and lead to loss of trust from superiors.
Therefore, after hearing Chang Haonan's idea, Ding Zhongli frowned slightly:
"Although it is true to think this way, in operation... I'm afraid it will be difficult to implement."
Then he He further explained:
“At present, the most accurate and common method for detecting greenhouse gas content in the atmosphere is definitely on-site or aerial measurement. However, due to various non-technical factors, it is difficult to measure in many locations. Therefore, the spatial coverage is limited and can only be used for local observations.”
“If you really want to conduct sustained and stable high-precision observations over a large area, or even on a global scale, you can only consider it. Satellite remote sensing... For example, during the third IPCC assessment three years ago, the United States and Japan jointly released data on carbon dioxide emissions from a coal mine in Shanxi Province, my country, and accused this coal mine of exceeding the world average in emissions per unit of output. Level 7 times.”
Speaking of this, Ding Zhongli also put on a somewhat indignant expression:
“Because the other party is doing space remote sensing measurements, we can’t deal with it with sovereignty issues, although an international joint inspection was urgently organized later. It was used to clarify, but I was still very passive for a time..."
This completely involves Chang Haonan's knowledge blind spot:
"Is there anything else?"
< br>"Too many..."
Ding Zhongli shook his head helplessly
"It is a pity that our country does not have enough technology accumulation in this area, and space launch resources are very tight. It is impossible to launch a satellite specifically to detect carbon dioxide concentration..."
As a researcher majoring in geology and geophysics, he is used to living a hard life.
Although this industry is said to be a science, the demand for resource investment is actually no lower than that of large-scale projects.
If you really want to conduct high-level research, you will have to equip yourself with supercomputers, remote sensing satellite clusters, ground observation networks, and even strategic reconnaissance aircraft.
Given China's conditions at the beginning of the 21st century, it is indeed impossible to be so extravagant in a field that neither produces direct benefits nor involves national defense and security.
In fact, considering that it is already August 2004, and the IPCC fourth assessment plan is due to end in 2006, even if the money is in place, China will most likely not have time to launch a satellite.
So, Chang Haonan initially considered another path.
Use foreign data to slap themselves in the face.
“We definitely can’t launch satellites ourselves.”
After thinking for a moment, he waved his hand and replied:
“Let’s not talk about the issues of time and money... Even if it is really registered, others can turn around and say that our data is fake... …Although we will not be passive by then, it will just return to the state where everyone talks about his own things, which does not make much sense..."
"But logically speaking, greenhouse gas research should be shared by the whole world. Should the remote sensing results of foreign atmospheric carbon dioxide satellites be made public to the outside world?" Faced with this seemingly incompetent question, Ding Zhongli was confused for a moment and couldn't figure out why Chang Haonan, who was very sharp just now, suddenly made a mistake now. Got mixed up.
But he still replied:
"It's open to the public... but foreigners are not stupid. If they really want to falsify some key positions, they will definitely adjust the infrared spectrum released in advance to make the measurement data and calculation results match."
< br>"As for the first-hand raw data of the satellite...then we are even less likely to have access to it."
After hearing this, Chang Haonan immediately asked:
"What if...not only carbon dioxide is considered "
Ding Zhongli has been engaged in climate research for more than ten years, and he immediately realized what he meant:
"You mean methane...or nitrogen oxides?"
The so-called greenhouse gases are actually a large category, the most typical and famous of which is carbon dioxide.
But it actually includes many other categories of gases.
If you look at the intensity of the greenhouse effect alone, carbon dioxide is not even very strong in it.
It’s just that it has the highest absolute concentration and is a component that must be contained in normal atmosphere, so it is often taken out and beaten.
"It's methane."
Chang Haonan nodded:
"Although the methane content in the air is much less than that of carbon dioxide, we must also consider that the former's ability to cause the greenhouse effect is greater than the latter's. More than 30 times, especially for the lay media and busy people, they cannot be expected to understand the difference between global warming potential and global warming impact value. It is a good gimmick.”
Although he does not understand meteorology and geophysics, he happened to have studied several typical greenhouse gases from a chemical level for the AE1500 that is under development.
The main source of methane is actually the ruminant action of mammals, artiodactyls, oil extraction and crop cultivation.
Except for the third item, none of these are China's strengths.
Ding Zhongli thought for a while:
“But currently there is no particularly mature technical means to determine methane content through space remote sensing...”
“I What this means is that although infrared hyperspectral satellites will detect carbon dioxide content and also provide data including methane, water vapor, and VOCs, in general, short-wave infrared is still needed to accurately obtain the concentration of CH4. , thermal infrared and active laser radar... It may be difficult to obtain accurate data only by relying on a single spectral data, especially second-hand data provided by others.”
However, Chang Haonan was at this time. Showing a strange expression:
"Why do we need to obtain accurate data?"
"???"
Ding Zhongli's face was filled with "Are you kidding me?"
"Carbon dioxide and methane There is a common absorption feature at 1.6 microns in the infrared spectrum."
Chang Haonan's next sentence is a bit nonsensical.
But he quickly continued:
“In other words, you can choose the carbon dioxide concentration at the measurement point as a reference, and use the iterative update algorithm of the forward radiation transfer model and the inversion process to calculate It performs concentration inversion in the common absorption band with methane. "
"Technically speaking, if they deliberately lowered the concentration of carbon dioxide in the data, they did not correct it accordingly because they were unprepared. Other parameters, then the derived methane concentration will be abnormally high...and considering that the actual concentration of carbon dioxide in the air is generally tens or hundreds of times that of methane, the abnormally high degree will be very, very exaggerated."
"In other words, they either admitted that they had falsified the public data, or they admitted that they secretly emitted a quantity of methane gas that could destroy the earth..."
(End of Chapter)