SIFTER sun-induced vegetation fluorescence data from GOME-2A (Version 2.0)

The SIFTER Sun-Induced Fluorescence (SIF) version 2 database is available. We developed an improved retrieval algorithm to retrieve mid-morning (09:30 hrs local time) SIF estimates on the global scale from GOME-2 sensor on the Metop-A satellite (GOME-2A) for the period 2007-2019. SIFTER v2 data compares well with the independent NASA v2.8 data product. Especially in the evergreen tropics, SIFTER v2 no longer shows the underestimates against other satellite products that were seen in SIFTER v1. The new data product includes uncertainty estimates for individual observations, and is best used for qa_values above 0.6. The data are accompanied by images that show daily SIF estimates and are described in the following paper: <br> van Schaik, E., Kooreman, M. L., Stammes, P., Tilstra, L. G., Tuinder, O. N. E., Sanders, A. F. J., Verstraeten, W. W., Lang, R., Cacciari, A., Joiner, J., Peters, W., and Boersma, K. F.: Improved SIFTER v2 algorithm for long-term GOME-2A satellite retrievals of fluorescence with a correction for instrument degradation, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2019-384, in review, 2020. <br> For more information, see: http://www.temis.nl/surface/sif.html