This dataset provides Rapid Science Orbits (RSO) from the Low Earth Orbiter (LEO) satellite SAC-C. It is part of the compilation of GFZ RSO products for various LEO missions and the appropriate GNSS constellation in sp3 format. The individual solutions for each satellite mission are published with individual DOI as part of the compilation (Schreiner et al., 2022).
• The SAC-C RSO cover the period from 2000 202 to 2010 247
The LEO RSOs in version 1 are generated based on the 24-hour GPS RSOs in two pieces for the actual day with arc lengths of 14 hours and overlaps of 2 hours. One starting at 22:00 and ending at 12:00, one starting at 10:00 and ending at 24:00. For day overlapping arcs two 24h GNSS constellations are concatenated. The accuracy of the LEO RSOs is at the level of 1-2 cm in terms of SLR validation.
Each solution in version 1 is given in the Conventional Terrestrial Reference System (CTS) based on the IERS 2003 conventions and related to the ITRF-2008 reference frame. The exact time covered by an arc is defined in the header of the files and indicated as well as in the filename.
This is a multidisciplinary long term project which aims at an understanding of plant and ecosystem processes under natural conditions when key environmental drivers are altered. Here we investigate the influence of elevated CO2 on species diversity and primary productivity of a highly diverse calcareous grassland. Biodiversity effects are explained by plant growth responses, water relations, soil processes and genotypic varience. We use a new CO2-enrichment technology-screen aided CO2-control (SACC) and also manipulated diversities. Leading Questions: Does biodiversity affect ecosystem functioning? Is biodiversity affected by elevated CO2 and how? What are the causes for species specific responses to elevated CO2? What are the longterm consequences of such changes for ecosystem functioning and species persistance (conservation)?