Related by context. Frequent words. (Click for all words.) 68 equator 62 tropics 57 mid latitudes 56 tropical 56 latitudes 55 subtropical 54 equatorial Pacific 53 convective 52 volcanic islands 52 polar 52 Antarctica 51 subtropics 51 temperate regions 51 troposphere 51 tropic 50 volcanism 49 savannah 49 Amazon basin 49 atmospheric circulation 49 Equator 49 volcanic 49 volcanic activity 48 geologically active 48 arid 48 Atlantic Ocean 48 Pacific Ocean 48 convection 48 Iapetus 48 water vapor 48 savanna 48 oceanic 47 Sahara Desert 47 crustal 47 galaxy cluster 47 Indian Ocean 46 sunspot 46 Great Rift Valley 46 ionosphere 46 polar caps 46 magmatic 46 nebula 46 Equatorial 46 Milky Way galaxy 46 arid desert 46 Saharan 46 heliosphere 46 highlands 46 geomagnetic 46 cometary 46 monsoonal 46 Milky Way Galaxy 46 landforms 46 polar regions 46 tropical cyclones 45 easterly 45 tropical climates 45 volcanic eruptions 45 volcanoes 45 orbital 45 Enceladus 45 NASA Cassini spacecraft 45 HD #b [002] 45 glaciation 45 semi arid 45 supernova explosion 45 Antarctic Peninsula 45 aridity 45 Sedna 45 outermost 45 Sahara desert 45 jet stream 45 Cape Verde islands 45 starlight 45 oscillation 45 martian 45 ringed planet 45 quasar 44 Kalahari Desert 44 synoptic 44 ENSO 44 northern latitudes 44 Kuiper Belt 44 upwelling 44 umbra 44 active volcanoes 44 tectonic 44 ejecta 44 tropical forest 44 circular orbit 44 crater rim 44 climatic conditions 44 savannahs 44 sunspot activity 44 sunspots 44 temperate 44 MODIS 43 orbits 43 corona 43 southerly 43 oscillations 43 Qinghai Tibet Plateau