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En '''regnskov''' er en [[skov]], der har sit tilnavn fra den daglige [[regn]]. Regnskove opstår overalt, hvor nedbørsmængden overstiger [[fordampning]]stabet måned for måned.
Regnskoven producerer [[bioaerosol]]er og påvirker [[Sky (meteorologi)|skydannelse]], [[tåge]]dannelse og [[nedbør]]en væsentligt – og dermed både [[vejr]]et og
<ref>[http://www.sciencedaily.com/releases/2004/05/040506073316.htm Max Planck Society. (2004, February 26). Astonishing Discovery Over The Amazonian Rain Forest. ScienceDaily] Citat: "...natural aerosols from the Amazonian rain forest...These aerosol particles give rise to the formation of [[tåge|haze]] and reduce the visibility in forested areas. They have an effect on [[sky (meteorologi)|cloud]] formation and influence [[nedbør|rainfall]] and [[klima|climate]]..."</ref><ref>[http://www.sciencedaily.com/releases/2004/02/040226071042.htm Penn State. (2004, May 6). Missing Chemical Important To Air Pollution Estimates. ScienceDaily] Citat: "..."We think we measured all major components of the hydroxyl radical reactants, but there is something still unaccounted for,” says Brune. "We know that something we cannot identify is reacting with the hydroxyl radicals and we know it is temperature dependent and not light dependent. We just do not know what it is."..."</ref><ref>[http://www.sciencedaily.com/releases/2009/08/090806141518.htm California Institute of Technology (2009, August 7). Organic Carbon Compounds Emitted By Trees Affect Air Quality. ScienceDaily] Citat: "..."The king emitters are [[egetræer|oaks]]," Wennberg says. "And the [[isopren]]e they emit is one of the reasons that the [[Smoky Mountains]] appear smoky."..."And isoprene only comes from plants. They make hundreds of millions of tons of this chemical...for reasons that we still do not fully understand."..."</ref><ref>[http://www.sciencedaily.com/releases/2014/05/140515154136.htm Carnegie Mellon University. (2014, May 15). Emissions from forests influence very first stage of cloud formation. ScienceDaily] Citat: "...This new study uncovers an indispensable ingredient to the long sought-after cloud formation recipe -- highly oxidized organic compounds..."It turns out that sulfuric acid and these oxidized organic compounds are unusually attracted to each other. This remarkably strong association may be a big part of why organics are really drawn to sulfuric acid under modern polluted conditions," Donahue said...The fine-tuned model not only predicted nucleation rates more accurately but also predicted the increases and decreases of nucleation observed in field experiments over the course of a year, especially for measurements near forests. This latter test is a strong confirmation of the fundamental role of emissions from forests in the very first stage of cloud formation, and that the new work may have succeeded in modeling that influence..."</ref>
Hele verdens regnskove består af et utrolig varieret planteliv. Bare i [[Amazonområdet|Amazonasområdet]] er der omkring 80.000 forskellige plantearter. I regnskovene i Afrika, Sydamerika og Sydasien er der omkring 180.000 forskellige plantearter. Det vil sige at næsten to tredjedele af verdens plantearter er på mindre end 7 % af jordens areal.{{kilde mangler|dato=september
== Tempereret regnskov ==
{{Hovedartikel3|Tempereret regnskov}}
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=== Eksempler på tempererede regnskove ===
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* Det sydvestlige [[Norge]] ud mod Atlanterhavskysten.
* De blandede skove langs kysten af det sydlige [[Chile]].
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== Regnskovene og klimaet ==
Regnskovene er af stor betydning for klimaet, specielt [[den globale opvarmning]], idet træerne har optaget store mængder [[Kuldioxid|CO<sub>2</sub>]]<ref>Ifølge et skøn fra den førende amerikanske forsker på området, Daniel Nepstad, vil et stop for fældningen af regnskov i Amazonas nedbringe udsplippet med 2% – 5%, [[jf. interview med Dorrit Saietz i Politiken, 17. december 2009]]</ref>. En gammel regnskov i balance udleder ligeså meget
== Kilder/referencer ==
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== Eksterne henvisninger ==
* [http://www.regnskove.dk/ regnskove.dk] Stor visuel database om regnskove på dansk, rettet mod grundskolernes 4.-6. klasse
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== Se også ==
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* [[Hoh-regnskoven]] i Washington
* [[Tågeskov]]
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