@Article{SalazarPrad:2022:SuOrDu,
               author = "Salazar, Francisco Javier Tip{\'a}n and Prado, Antonio Fernando 
                         Bertachini de Almeida",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Sun-synchronous orbital dust ring to reduce climate change at the 
                         polar caps",
              journal = "European Physical Journal Plus",
                 year = "2022",
               volume = "137",
               number = "6",
                pages = "e710",
                month = "June",
             abstract = "As a geoengineering strategy to attenuate the solar insolation and 
                         offset the impacts of global warming at the polar regions, this 
                         study proposes a Sun-pointing vertical Earth ring comprised of 
                         dust grains to shade mainly the Earths poles and to reduce climate 
                         change at the polar regions. A dust ring from 1.1 to 1.17 Earth 
                         radii passing above both poles of the Earth is designed, taking 
                         into account the effects of solar radiation pressure and the 
                         Earths J2 oblateness perturbation. Perturbations including 
                         atmospheric drag, third-body gravitational forces and shaded 
                         regions are neglected. A family of circular polar orbits, with 
                         inclinations about 98 \∘, is considered for the passive 
                         cloud of particles with radii less than 50 \μm. We state 
                         that the coupled effect of solar radiation pressure and J2 
                         perturbation in the orbital dynamics of small particles is 
                         essential to ensure that the side of the dust ring will be 
                         pointing to the Sun. An analytical ring shadow model is used to 
                         evaluate its performance and to estimate the mass of the ring. The 
                         results of this study shows that the attenuation of solar 
                         isolation at the polar regions is about twice the attenuation 
                         computed in the rest of the regions of the Earth. Finally, an 
                         estimate of about 5.5 × 10 12 kg of material is computed as the 
                         total mass required to offset the impacts of climate change at the 
                         Earths poles.",
                  doi = "10.1140/epjp/s13360-022-02866-6",
                  url = "http://dx.doi.org/10.1140/epjp/s13360-022-02866-6",
                 issn = "2190-5444",
             language = "en",
           targetfile = "Salazar-Prado2022_Article_Sun-synchronousOrbitalDustRing.pdf",
        urlaccessdate = "25 jun. 2024"
}