>If good/cheap/big/fast carbon sinks are up for discussion i would recommend >phytoplankton... Salmon are tasty too, but that is a side dish.
https://www.vox.com/the-highlight/2019/5/24/18273198/climate-change-russ-george-unilateral-geoengineering ~greg http://krsnadas.org -- from: Ian Clark <[email protected]> reply-to: [email protected] to: [email protected] date: Jun 7, 2019, 11:15 AM subject: Re: [Jchat] TABULA announcement and request >> I'm going to put myself in the "not enough interest to try to figure this >> out" category, for now. >Whoa, folks. It's only an example! Let's not carried away by the magnitude of >the problem domain to refuse to focus on the two limited questions I've asked. >Let me repeat them, hopefully clarifying them… >++ are the input figures reliable, i.e. has the data been corrupted when >moving it from web to SAMPLE9? ++ is TABULA calculating it right? >These are purely questions of data integrity and code reliability. I thought >everyone on this list was keenly interested in such issues. >The first question arises from the deceptively simple task of looking up a >quantity on the web and transferring it into a calculating engine. Simple, but >errors can arise. Issues arise about where such-and-such a physical constant >or observation comes from. How the end-user can verify its source. Would it >have helped if I'd phrased it in terms of looking up the current $/£ exchange >rate? >TABULA is distributed with tables of physical and chemical constants. Are they >up-to-date? Have they been copied across correctly? Built-in tables are an >inherently unsatisfactory solution. I'm now considering an interactive >specialised browser, with which the user can locate any of these quantities on >a given webpage, draw a box round them, and leave TABULA to fetch the numbers >and units at the point of use. Hey presto: keying errors eliminated, >up-to-date figures, near-perfect assurance of the integrity of the data being >fetched. Warning if the webpage has been corrupted or pulled. >These, and only these, are the questions I'm interested in here. I just fail >to see how I could possibly have made it clearer. -- from: Raul Miller <[email protected]> to: Chat forum <[email protected]> date: Jun 7, 2019, 10:43 AM subject: Re: [Jchat] TABULA announcement and request On Fri, Jun 7, 2019 at 12:18 PM Ian Clark <[email protected]> wrote: >> Would anyone fancy checking my calculations? >I don't, but if I did, I'd try to find an alternate way of getting the same >information and see if the numbers land in the same order of magnitude. >(For example, when talking about global temperature change over the last >century, I like double checking those kinds of numbers with rise in sea level. >Weather stations tend to be near airports, which tend to have lots of asphalt, >but sea level doesn't have that issue and the thermal expansion coefficient of >water is something I can easily find, as are NOAA numbers on sea level...) >So, if I were be double checking numbers related to CO2, I'd try to find some >similar thing. For actual levels, I don't have any good ideas - maybe >something optical? >For cost of pulling it back out? The big mechanism there has always been trees >and similar vegetation. So maybe I'd check forestry service records, or lumber >statistics. I'd probably have to put some thought into it though - maybe a few >weeks before I had any really good ideas on what to look for. Hopefully >someone else has been doing this thinking, but most people aren't really >interested in doing that kind of thinking. >(Related: It takes about 60 years to grow a typical crop of trees for lumber >-- maybe 10 times that for something like Sitka Spruce -- and during that time >they relatively large amount of CO2 out of the atmosphere. So if enough land >is earmarked for vegetation, we should be seeing a lot of CO2 being pulled out >of the atmosphere. Well, that and don't let them burn up in forest fires, for >example.) >Anyways, good luck, but I'm going to put myself in the "not enough interest to >try to figure this out" category, for now. Maybe if I think up a good approach >I'll change my mind. Thanks, Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
