| Subject | English | Spanish |
| life.sc. | arctic air | aire ártico |
| life.sc. | arctic air mass | aire ártico |
| gen. | Arctic area | zona ártica |
| UN, geol. | Arctic basin | cuenca del Ártico |
| nat.res. | Arctic bramble | mora ártica (Rubus arcticus) |
| nat.sc., agric. | arctic bramble | rubus arcticus (Rubus arcticus) |
| ichtyol. | Arctic char | Trucha alpina Salvelinus alpinus |
| fish.farm. | arctic char | salvelino (Salvelinus alpinus) |
| fish.farm. | Arctic char | trucha alpina (Salmo salvelinus, Salvelinus alpinus) |
| fish.farm. | Arctic charr | salvelino (Salmo salvelinus, Salvelinus alpinus, Salvelinus alpinus alpinus) |
| fish.farm. | Arctic charr | trucha alpina (Salmo salvelinus, Salvelinus alpinus, Salvelinus alpinus alpinus) |
| earth.sc. | Arctic Circle | círculo polar ártico |
| life.sc. | arctic climate | clima polar |
| UN, clim. | Arctic Climate Impact Assessment | Evaluación de los efectos del cambio climático en el Ártico |
| fish.farm. | Arctic cod | bacalao polar (Boreogadus saida) |
| fish.farm. | Arctic cod | bacalao del Ártico (Eleginus navaga (Pallas), Gadus navaga) |
| environ. | Arctic Council | Consejo Ártico |
| environ., min.prod. | Arctic Development | Desarrollo Ártico |
| environ. | Arctic ecosystem | ecosistema ártico |
| UN | Arctic Environmental Protection Strategy | Estrategia de Protección del Medio Ambiente Ártico |
| environ. | Arctic Environmental Protection Strategy | Estrategia de Protección del Medio Ambiente en el Ártico |
| fish.farm. | Arctic flounder | solla ártica (Liopsetta glacialis) |
| mamm. | arctic fox | zorro |
| mamm. | arctic fox | ártico |
| gen. | arctic fox | zorro ártico |
| earth.sc. | arctic front | frente ártico |
| ichtyol. | Arctic grayling | Tímalo ártico Thymallus arcticus |
| UN | Arctic haze | calina ártica |
| life.sc. | arctic haze | calima ártica |
| meteorol. | arctic high | anticiclón polar |
| meteorol. | arctic high | alta polar |
| environ. | Arctic hole | agujero boreal |
| life.sc. | Arctic meteorologist | meteorólogo especializado en las regiones árticas |
| life.sc. | Arctic meteorology | meteorología ártica |
| environ. | Arctic Monitoring and Assessment Programme | Programa de vigilancia y evaluación del Ártico |
| geogr. | Arctic Ocean | Océano Glacial Ártico |
| environ. | Arctic Ocean The smallest and most poorly studied of the oceans on earth. It covers an area of 14 million square km that is divided by three submarine ridges, i.e. the Alpha Ridge, the Lomonosov Ridge, and an extension of the mid-Atlantic ridge. It is also nearly landlocked, covered year-round by pack ice, and the third of its area is continental shelf | Océano Ártico |
| econ. | Arctic Ocean | Océano Ártico |
| meteorol. | Arctic Oscillation | oscilación Ártica |
| meteorol. | arctic outbreak | invasión de aire ártico |
| environ. | Arctic ozone hole | agujero boreal |
| meteorol. | arctic plunge | invasión de masa de aire ártico |
| meteorol. | arctic plunge | invasión de aire ártico |
| nat.res. | arctic redpoll | pardillo de Hornemann (Acanthis hornemanni, Carduelis hornemanni) |
| environ. | Arctic region | región Ártica |
| environ. | Arctic region The northernmost area of the earth, centered on the North Pole, that includes the Arctic Ocean, the northern reaches of Canada, Alaska, Russia, Norway and most of Greenland, Iceland and Svalbard | región Ártica |
| nat.res. | Arctic right whale | ballena franca (Balaena mysticetus, Eubalaena mysticetus) |
| nat.res. | Arctic right whale | ballena de Groenlandia (Balaena mysticetus, Eubalaena mysticetus) |
| industr., construct., chem. | arctic rubber | goma anticristalizante |
| geogr. | Arctic Sea | Mar Ártico |
| meteorol. | arctic sea smoke | mar humeante del ártico |
| life.sc. | arctic sea smoke | mar humeante del Ártico o del Antártico |
| life.sc. | arctic sea smoke | niebla humeante |
| ichtyol. | Arctic skate | Raya ártica Raja hyperborea |
| nat.res. | Arctic skua | págalo parásito (Stercorarius parasiticus) |
| nat.res. | arctic skua | págalo parásito (Stercorarius parasiticus) |
| fish.farm. | Arctic smelt | eperlano ártico (Osmerus dentex, Osmerus mordax dentex) |
| earth.sc., environ. | Arctic stratosphere | estratosfera ártica |
| environ., nat.res. | Arctic tern | charrán ártico (Sterna paradisaea) |
| nat.res. | arctic tern | charrán ártico (Sterna macrura, Sterna paradisaea) |
| life.sc. | Arctic vortex | torbellino ártico |
| nat.sc. | arctic warbler | mosquitero boreal (Phylloscopus borealis) |
| life.sc. | Arctic winter | invierno ártico |
| fin., polit. | Barents Euro-Arctic Council | Consejo Euroártico de Barents |
| transp. | Barents Euro-Arctic Pan-European Transport Area | Espacio paneuropeo de transporte de la Región euroártica de Barents |
| transp. | Barents Euro-Arctic Transport Area | Espacio paneuropeo de transporte de la Región euroártica de Barents |
| meteorol. | barrier flows of arctic air to the lee of the Rockies | flujos de aire polar a sotavento de barreras montañosas |
| meteorol. | continental Arctic air | aire ártico continental |
| fin. | cooperation in the Euro-Arctic region | cooperación euroártica |
| nat.sc., environ., polit. | European Arctic stratospheric ozone experiment | experimento europeo sobre el ozono estratosférico en la región Ártica |
| gen. | International Arctic Science Committee | Comité Científico Internacional del Ártico |
| meteorol. | maritime Arctic air | aire ártico marítimo |
| UN | Preparing for Johannesburg 2000 - An Initial Arctic Message: 10 Years of Arctic Environmental Cooperation | Primer mensaje ártico para la Cumbre de Johannesburgo 2002: 10 años de cooperación ambiental en el Ártico |
| UN | Regional Programme of Action for the Protection of the Arctic Marine Environment from Land-based Activities | Programa de Acción Regional para la protección del medio marino del Ártico frente a las actividades realizadas en tierra |
| pack. | tropical and arctic package | embalaje isotermo |