Sentences with phrase «international earth rotation»

It is intended to relate to the rotation of the earth.The IERS noted above is, in fact, the International Earth Rotation and Reference Systems Service established by the International Astronomical Union (IAU).

Bouin, Z. Altamimi Geocentric sea - level trend estimates from GPS analyses at relevant tide gauges world - wide Global and Planetary Change 57 (2007) 396 — 406 made a correct recalibration with the ITRF (International Terrestrial Reference Frame) defined by the International Earth Rotation Service

This network grew to a multi-station, multi-nation system with the Paris observatory eventually becoming the headquarters of the International Earth Rotation Service — IERS.

If clock time gets more than about 0.4 seconds out of step with astronomical time then the Earth Orientation Center of the International Earth Rotation and Reference Systems Service (IERS) based in the Paris Observatory announce a leap second needs to be inserted so that the two time scales always agree to better than one second.

When the International Earth Rotation Service calls for it, timing labs in all time zones add a leap second just before midnight in Greenwich, England.

«In 1972 the leap second was considered a step forward,» says astronomer Dennis McCarthy, who runs the Washington - based time directorate for the International Earth Rotation Service.

The new realization of the International Terrestrial Reference System DTRF2014, created by the geodesists at the TUM on behalf of the International Earth Rotation and Reference Systems Service, is already eagerly awaited in the expert community.

Najarian pointed out some of the technical headaches that leap seconds cause: they can not be preprogrammed into software, for example, because they are typically announced only six months in advance by the International Earth Rotation and Reference Systems Service in Frankfurt, Germany.

Not exact matches

NASA and international university researchers claim that humans have thrown off the balance between the Earth's rotation, surface air temperatures and movements in its molten core through our contribution of greenhouse gases.