Author/Authors :
Roy، نويسنده , , D.P. and Wulder، نويسنده , , M.A. and Loveland، نويسنده , , T.R. and C.E.، نويسنده , , Woodcock and Allen، نويسنده , , R.G. and Anderson، نويسنده , , M.C. and Helder، نويسنده , , D. and Irons، نويسنده , , Nicola J.R. and Johnson، نويسنده , , D.M. and Kennedy، نويسنده , , R. and Scambos، نويسنده , , T.A. and Schaaf، نويسنده , , C.B. and Schott، نويسنده , , J.R. and Sheng، نويسنده , , Y. and Vermote، نويسنده , , E.F. and Belward، نويسنده , , A.S. and Bindschadler، نويسنده , , R. and Cohen، نويسنده , , W.B. and Gao، نويسنده , , F. and Hipple، نويسنده , , J.D. and Hostert، نويسنده , , P. and Huntington، نويسنده , , John J. and Justice، نويسنده , , C.O. and Kilic، نويسنده , , A. and Kovalskyy، نويسنده , , V. and Lee، نويسنده , , Z.P. and Lymburner، نويسنده , , L. and Masek، نويسنده , , J.G. and McCorkel، نويسنده , , J. W. Shuai، نويسنده , , Y. and Trezza، نويسنده , , R. and Vogelmann، نويسنده , , J. and Wynne، نويسنده , , R.H. and Zhu، نويسنده , , Z.، نويسنده ,
Abstract :
Landsat 8, a NASA and USGS collaboration, acquires global moderate-resolution measurements of the Earthʹs terrestrial and polar regions in the visible, near-infrared, short wave, and thermal infrared. Landsat 8 extends the remarkable 40 year Landsat record and has enhanced capabilities including new spectral bands in the blue and cirrus cloud-detection portion of the spectrum, two thermal bands, improved sensor signal-to-noise performance and associated improvements in radiometric resolution, and an improved duty cycle that allows collection of a significantly greater number of images per day. This paper introduces the current (2012–2017) Landsat Science Teamʹs efforts to establish an initial understanding of Landsat 8 capabilities and the steps ahead in support of priorities identified by the team. Preliminary evaluation of Landsat 8 capabilities and identification of new science and applications opportunities are described with respect to calibration and radiometric characterization; surface reflectance; surface albedo; surface temperature, evapotranspiration and drought; agriculture; land cover, condition, disturbance and change; fresh and coastal water; and snow and ice. Insights into the development of derived ‘higher-level’ Landsat products are provided in recognition of the growing need for consistently processed, moderate spatial resolution, large area, long-term terrestrial data records for resource management and for climate and global change studies. The paper concludes with future prospects, emphasizing the opportunities for land imaging constellations by combining Landsat data with data collected from other international sensing systems, and consideration of successor Landsat mission requirements.
