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China, in Search of Water, is Building a Rain-Making Network Three Times the Size of Spain (scmp.com)

China is testing cutting-edge defence technology to develop a powerful yet relatively low-cost weather modification system to bring substantially more rain to the Tibetan plateau, Asia's biggest freshwater reserve. From a report: The system, which involves an enormous network of fuel-burning chambers installed high up on the Tibetan mountains, could increase rainfall in the region by up to 10 billion cubic metres a year -- about 7 per cent of China's total water consumption -- according to researchers involved in the project. Tens of thousands of chambers will be built at selected locations across the Tibetan plateau to produce rainfall over a total area of about 1.6 million square kilometres (620,000 square miles), or three times the size of Spain. It will be the world's biggest such project.

The chambers burn solid fuel to produce silver iodide, a cloud-seeding agent with a crystalline structure much like ice. The chambers stand on steep mountain ridges facing the moist monsoon from south Asia. As wind hits the mountain, it produces an upward draft and sweeps the particles into the clouds to induce rain and snow.

28 of 111 comments (clear)

  1. You need moisture first by bluefoxlucid · · Score: 4, Insightful

    This won't increase total precipitation. Either the moisture is moving and raining somewhere which doesn't run to the water table attached to the reservoir, or all of this water is already coming down as rain. Are they stealing rain from another province over?

    1. Re:You need moisture first by gerald.edward.butler · · Score: 3, Funny

      Yeah, they'll use up all the water before it rains over the pacific ocean. Oh, noes, the Pacific Ocean will dry up! AAaaaaaaa!

    2. Re:You need moisture first by bluefoxlucid · · Score: 4, Informative

      This seems to be in the center of a continent, and affecting water-laden air moving northward. It looks like there's 850-1,850 miles of land before this air would reach Taiwan and the East Chinese Sea. The US is 3,000 miles across.

      It looks like they could impact Gansu or Mongolia.

    3. Re:You need moisture first by RandomFactor · · Score: 5, Informative

      This particular question is addressed at the very end of TFA. Sounds like there is a real concern with reducing the rainfall of other regions of China.

      Reducing the rainfall in regions other than China is not mentioned as a consideration.

      Beijing might not give the green light for the project either, he added, as intercepting the moisture in the skies over Tibet could have a knock-on effect and reduce rainfall in other Chinese regions.

      --
      --- Mercutio was right.
    4. Re:You need moisture first by zieroh · · Score: 2

      If this isn't man-made climate change, I don't know what is.

      --
      People who say "sheeple" have about as much sophistication as an AOL user, and in fact are probably actually AOL users.
    5. Re:You need moisture first by CrimsonAvenger · · Score: 2

      This seems to be in the center of a continent, and affecting water-laden air moving northward.

      Hmm, center of Asia, water-laden air moving northwards...

      Who could possibly be effected by this sort of thing? After all, there's noone north of China, after all.

      What's that you say? Russia? Nah, couldn't be!

      --

      "I do not agree with what you say, but I will defend to the death your right to say it"
    6. Re:You need moisture first by vtcodger · · Score: 4, Informative

      It's entirely possible that these airmasses aren't going to rain or snow anywhere after passing over the Tibetan Plateau. Getting up to the level of the plateau -- 14000 feet and up -- involves a lot of orographic uplift and squeezing out of moisture. Once they move on to lower elevation areas, they will drop and warm. The resulting humidity may well be too low to support precipitation.

      The article, if you actually read the whole thing, acknowledges that there may not be a lot of moisture there to extract even in Tibet. It also makes it clear that this is only a proposal and has not been approved by Beijing.

      --
      You can't see ANYTHING from a car, You've got to get out of the goddamned contraption and walk...Edward Abbey
  2. A Zero-Sum Game? by VirginMary · · Score: 4, Insightful

    I wonder who may loose out on the rain then? Also, I bet, China won't give a rat's ass as long as they have the stronger military and with annual growth of military spending in the double digits the rest of the world should better look out.

    --
    When 1person suffers from a delusion,it is called insanity.When many people suffer from a delusion,it is called religion
    1. Re:A Zero-Sum Game? by hey! · · Score: 2

      The trade winds bend fairly north in Asia, so that the prevailing winds in Tibet run from northeast to southwest, unlike most of the continental US at that latitude where westerlies prevail.

      So if moisture is falling on the Tibetan plateau, it's not falling in the northern parts of South Asia. If China succeeds, I believe the losers will be Nepal, the Punjab, and possibly eastern Pakistan -- places that receive a mild fall northeast monsoon coming down from the Himalayas but not the more potent and well-known southeasterly summer monsoon. South Asian slashdotters, feel free to correct me.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    2. Re:A Zero-Sum Game? by SlaveToTheGrind · · Score: 2

      If it works perfectly

      Was it really necessary to make me spray coffee all over my screen this early in the morning?

    3. Re:A Zero-Sum Game? by Adolf+Hitler,+Jr. · · Score: 3, Funny

      Was it really necessary to make me spray coffee all over my screen this early in the morning?

      Ewwww, who keeps coffee in a spray bottle?

    4. Re:A Zero-Sum Game? by tanveer1979 · · Score: 2

      This is incorrect. The Himalayas act as a barrier and nothing comes "from tibet".
      The Monsoon is SW and SE (From Arabian Sea and Bay of Bengal)

      --
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  3. how this research breakthrough came to be by nimbius · · Score: 5, Funny

    professor higgins: "the rain in spain stays mainly in the plain"
    chinese scientists: ...hold my oolong...

    --
    Good people go to bed earlier.
    1. Re:how this research breakthrough came to be by K.+S.+Kyosuke · · Score: 4, Funny

      The rain in China goes mostly on my...oh my.

      --
      Ezekiel 23:20
  4. Re:Soil bacteria by K.+S.+Kyosuke · · Score: 5, Insightful

    This is China you're talking about. You shoot first, ask environmental questions later.

    --
    Ezekiel 23:20
  5. So they are stealing rain... by Anonymous Coward · · Score: 2, Interesting

    By forcing rain to fall on Chinese soil... they are effectively inducing a drought elsewhere. Say now, the south of Russia becomes incredibly dry because there is no rain. China has no regard for absolutely anything. They take a technology and simply use it, asking no questions.

    What are the dry-to-be countries in the area do, then?

  6. What could possibly go wrong? by argStyopa · · Score: 4, Insightful

    I'm no climatologist, but China mass-draining the monsoons of suspended water can't have anything but nearly catastrophic effects on down-wind ecosystems that have evolved over hundreds of millions of years to exist compatibly with current moisture patterns.

    If they pull the moisture out of the air to get it to fall in Tibet, then it won't be there to fall wherever those air currents normally dump it - Eastern Russia, Northern China, or maybe even Japan. It would seem that relatively-dessicated air masses may behave unpredictably as well.

    --
    -Styopa
  7. Desalinization plant by pablo_max · · Score: 4, Interesting

    Seems a bit more practical to build some desalinization plants. From what I have understood, recent advancements in membrane tech would make it far cheaper than in the past. Plus, there is the added benefit of lithium production.

    https://www.ft.com/content/107...

  8. Re:Soil bacteria by AmiMoJo · · Score: 2

    It's possible they are learning. TFA does mention that the government might not green light it because they are worried about the down-stream effects (no pun intended).

    China has been pushing really hard, maybe harder than anyone to clean up its environment and deal with climate change. They started in a very bad place, hit peak coal a few years ago, installed more wind than the rest of the world combined... It's not perfect by any means but they seem to be serious about it.

    --
    const int one = 65536; (Silvermoon, Texture.cs)
    SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  9. Re:bad for other countries by CodeHog · · Score: 2

    You're assuming that potential army has enough incentive to fight. See the Vietnam military action for an example. Water is a good reason to fight but will it incite the common person enough? Assuming the potential army would be made up of primarily common people. Also, training. I wonder how the water situation in South Africa is impacting the society there.

    --
    Fat, drunk, and stupid is no way to go through life, son.
  10. Health effects via food production? by DrTJ · · Score: 2

    The collected rain will probably be used for food production and drinking water. If the crops accumulate this silver iodide and then ingested, then what happens?

    It is not entirely safe. From toxnet (https://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+2930):

    (It does not mention increased cancer risk, however, and no concentrations are mentioned, and hopefully the concentrations will be small)

    1) MILD TO MODERATE ORAL TOXICITY: Patients with mild
    ingestions may only develop irritation or grade I
    (superficial hyperemia and edema) burns of the
    oropharynx, esophagus or stomach; acute or chronic
    complications are unlikely. Patients with moderate
    toxicity may develop grade II burns (superficial
    blisters, erosions and ulcerations) are at risk for
    subsequent stricture formation, particularly
    esophageal. Some patients (particularly young
    children) may develop upper airway edema.
    a) Alkaline corrosive ingestion may produce burns to the
    oropharynx, upper airway, esophagus and occasionally
    stomach. Spontaneous vomiting may occur. The absence
    of visible oral burns does NOT reliably exclude the
    presence of esophageal burns. The presence of
    stridor, vomiting, drooling, and abdominal pain are
    associated with serious esophageal injury in most
    cases.
    b) PREDICTIVE: The grade of mucosal injury at endoscopy
    is the strongest predictive factor for the occurrence
    of systemic and GI complications and mortality.
    2) SEVERE ORAL TOXICITY: May develop deep burns and
    necrosis of the gastrointestinal mucosa. Complications
    often include perforation (esophageal, gastric, rarely
    duodenal), fistula formation (tracheoesophageal,
    aortoesophageal), and gastrointestinal bleeding.
    Hypotension, tachycardia, tachypnea and, rarely, fever
    may develop. Stricture formation (esophageal, less
    often oral or gastric) is likely to develop long term.
    Esophageal carcinoma is another long term

  11. Re:Soil bacteria by K.+S.+Kyosuke · · Score: 3, Interesting

    They're definitely learning. The question is how quickly and how evenly is the experience applied. E.g., coal is probably not popular right now, but I guess the main reason is the air in large cities. How the "less visible" environmental issues are perceived right now in China, I have no idea.

    --
    Ezekiel 23:20
  12. The question you should always ask, by rickb928 · · Score: 3, Interesting

    about China's intentions when they 'develop' anything in the hinterlands, is how this will assist them in destroying or diminishing the indigenous, non-Chinese, population.

    Especially in Tibet.

    --
    deleting the extra space after periods so i can stay relevant, yeah.
  13. Re:Nice try, Quang! by jdschulteis · · Score: 2
    I guess rain water is no longer viable for replenishment of our precious bodily fluids.

    We're down to just distilled water, and pure grain alcohol.

  14. How much silver is that? by hydrodog · · Score: 2

    Aside from the climate effects, what is the effect of putting a lot of siilver in the environment? Is everyone in China going to come down with Argyria? https://en.wikipedia.org/wiki/...

  15. Re: bad for other countries by Camarillo+Brillo · · Score: 2

    Yea, like Tibet. Its sad that the Chineese government had to murder so many peaceful Bhuddists to feed their insatiable growth and egos.

  16. The last time I seeded a cloud by jaymemaurice · · Score: 2

    The last time I seeded a cloud, I just had to install OpenStack

    --
    120 characters ought to be enough for anyone
  17. Comment removed by account_deleted · · Score: 2

    Comment removed based on user account deletion