Nasa Grace Satellite Data

Geocenter degree 1 geoid estimates the spherical harmonic coefficients of degree 1 represent the distance between the center of mass of the earth and its center of figure which in practice.
Nasa grace satellite data. Twin satellites took detailed measurements of earth s gravity field anomalies from its launch in march 2002 to the end of its science mission in october 2017. Greenland and antarctica are melting but how quickly and which areas are most affected. Scientists at nasa s goddard space flight center generate groundwater and soil moisture drought indicators each week. The gravity recovery and climate experiment grace was a joint mission of nasa and the german aerospace center dlr.
Get the latest updates on nasa missions watch nasa tv live and learn about our quest to reveal the unknown and benefit all humankind. The image was taken during a nasa icebridge airborne survey of the region in 2016. A purely geodetic mdt estimate constructed in 2008 from the mean sea surface and mean geoid based on grace data other space and in situ gravity data. After more than 15 productive years in orbit the u s german grace gravity recovery and climate experiment satellite mission has ended science operations.
Grace in the news. They are based on terrestrial water storage observations derived from grace fo satellite data and integrated with other observations using a sophisticated numerical model of land surface water and energy processes. Prolific earth gravity satellites end science mission october 27 2017. The twin grace fo spacecraft are operated from the german space operations center in oberpfaffenhofen germany under a gfz contract with the german aerospace center dlr.
Nearly 20 years of satellite data provide key insights into these questions. All reported data are anomalies relative to the 2004 0 2009 999 time mean baseline. Please check the faqs regarding questions about the time mean field. Note that this baseline needs to be consistent when comparing grace data to other anomaly data e g groundwater or sea level.
Grace grace fo satellite data track ice loss at the poles greenland s steenstrup glacier with the midmorning sun glinting off the denmark strait in the background. Nearly 20 years of satellite data provide key insights into these questions. The gravity recovery and climate experiment follow on grace fo is a continuation of the mission on near identical.