Method for controlling land surface temperature using stratospheric airships and reflector

A method of reflecting sunlight, comprising:

• connecting a plurality of reflectors to support lines so that each of the reflectors has four corners connected to lower ends of the support lines;
• coupling the support lines to a plurality of stratospheric airships;
• unfolding the reflectors in the air to have a trapezoidal shape and to be slanted with respect to the land surface, wherein the land surface has an area in a range of 1 Km2 to 1,000 Km2;
• reflecting sunlight with reflecting surfaces of the reflectors;
• and
• positioning the reflecting surfaces of the reflectors in the stratosphere with the airships so as to be inclined with respect to an incident angle of the sunlight so as to introduce reflected light of the sunlight into the land surface,
• wherein
• the reflectors each includes a long side and a short side opposite the long side,
• the positioning includes moving and positioning the airships, which support corners of the long sides and corners of the short sides through the support lines, so that the reflectors introduce the reflected light of the sunlight into the land surface by adjusting an angle of the reflecting surfaces with respect to the incident angle of the sunlight,
• wherein the positioning the reflecting surfaces comprises controlling an inclination angle of the reflectors with respect to the incident angle of the sunlight as a pair of the airships, which supports the corners of the short side of one of the reflectors, intersectionally moves between another pair of the airships supporting the corners of the long side of the one reflector.

A method of reflecting sunlight, comprising:

• connecting a plurality of reflectors to support lines so that each of the reflectors has four corners connected to lower ends of the support lines;
• coupling the support lines to a plurality of stratospheric airships;
• unfolding the reflectors in the air to have a trapezoidal shape and to be slanted with respect to the land surface, wherein the land surface has an area in a range of 1 Km2 to 1,000 Km2;
• reflecting sunlight with reflecting surfaces of the reflectors;
• and
• positioning the reflecting surfaces of the reflectors in the stratosphere with the airships so as to be inclined with respect to an incident angle of the sunlight so as to introduce reflected light of the sunlight into the land surface,
• wherein
• the reflectors each includes a long side and a short side opposite the long side,
• the positioning includes moving and positioning the airships, which support corners of the long sides and corners of the short sides through the support lines, so that the reflectors introduce the reflected light of the sunlight into the land surface by adjusting an angle of the reflecting surfaces with respect to the incident angle of the sunlight,
• wherein the positioning the reflecting surfaces comprises controlling an inclination angle of the reflectors with respect to the incident angle of the sunlight as a pair of the airships, which supports the corners of the long side of one of the reflectors, intersectionally moves from an outside of another pair of the airships supporting the corners of the short side of the one of the reflectors.

A method of reflecting sunlight, comprising:

• connecting a plurality of reflectors to support lines so that each of the reflectors has four corners connected to lower ends of the support lines;
• coupling the support lines to a plurality of stratospheric airships;
• unfolding the reflectors in the air to have a trapezoidal shape and to be slanted with respect to the land surface, wherein the land surface has an area in a range of 1 Km2 to 1,000 Km2;
• reflecting sunlight with reflecting surfaces of the reflectors;
• and
• positioning the reflecting surfaces of the reflectors in the stratosphere with the airships so as to be inclined with respect to an incident angle of the sunlight so as to introduce reflected light of the sunlight into the land surface,
• wherein the positioning includes positioning the plurality of reflectors at different angles with respect to an incident direction of the sunlight and along the incident direction of the sunlight, and a distance between front and back neighboring reflectors of the reflectors is set up so that reflected light of the back reflector cannot be blocked by the front reflector.

A method of reflecting sunlight, comprising:

• connecting a plurality of reflectors to support lines so that each of the reflectors has four corners connected to lower ends of the support lines;
• coupling the support lines to a plurality of stratospheric airships;
• unfolding the reflectors in the air to have a trapezoidal shape and to be slanted with respect to the land surface, wherein the land surface has an area in a range of 1 Km2 to 1,000 Km2;
• reflecting sunlight with reflecting surfaces of the reflectors;
• and
• positioning the reflecting surfaces of the reflectors in the stratosphere with the airships so as to be inclined with respect to an incident angle of the sunlight so as to introduce reflected light of the sunlight into the land surface,
• wherein the reflectors are grouped at different angles with respect to an incident direction of the sunlight and in a transverse direction with respect to the incident direction of the sunlight.