Mapping spatial-temporal sediment dynamics of river-floodplains in the Amazon

This directory contains the following maps in GeoTIFF format: open-water frequency, time-series of reflectance for each band (Red and NIR), and frequency of SSSC classes. Fassoni-Andrade, A. C., & Paiva, R. C. D. (2019). Mapping spatial-temporal sediment dynamics of river-floodplains in the Amazon. Remote Sensing of Environment, 221, 94-107. https://www.sciencedirect.com/science/article/abs/pii/S0034425718305005 Corresponding autor: [e-mail] 1) Data Description: 1.1) Spatial Representation Type: Raster Format: TIFF Columns and rows: 7661, 2405 Cell Size (X,Y): 0.002245, 0.002245 (~250m) 1.2) Extent (coordinate system): Top: -0.025 Left: -67.28 Right: -50.081055 Botton: -5.424225 1.3) Spatial Reference Properties (GCS_WGS_1984.prj file): Type: Geographic Geographic Coordinate Reference: WGS 1984 Open Geospatial Consortium (OGC) Well Known Text (WKT): GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433], AUTHORITY["EPSG",4326]] 2) Data description for individual files: 2.1) File: open_water_frequency.tif This map indicates for how long, during 15 years (2003-2017), each pixel in rivers and lakes of central Amazon basin remained as open-water at every four days. Number of Bands: 1 Values between 0 and 100. Pixel Type: floating point Pixel Depth: 32 bit No Data Value: 0 2.2) File: class_SSC_frequency.tif This map represents a 15-year frequency (2003-2017) at which each pixel in rivers and lakes of central Amazon basin remains in one of the surface suspended sediments concentration classes (SSSC): high, moderate, and low. The open-water frequency map must be considered to interpret the sediments temporal dynamics in the class frequency map. For example, a pixel in the floodplain lake with frequency of 10, 30, and 20% in SSSC classes low, medium and high respectively, remains 40% of the time as no open-water. Number of Bands: 3 band 1: low SSSC class; band 2: Moderate SSSC class; band 3: High SSSC class Composition of bands for best visualization: R(3)G(2)B(1) without contrast Values between 0 and 100. Pixel Type: double precision Pixel Depth: 64 bit No Data Value: 0 2.3) File: time_series_nir.tif This map represents the climatology time series of infrared (nir) reflectance in period of four-days in rivers and lakes of central Amazon basin between 2003 and 2017 (15 years). Number of Bands: 92 (each band represent a date that is identified in dates.txt file) Values between 0 and 10000. Pixel Type: floating point Pixel Depth: 32 bit No Data Value: 0 2.4) File: time_series_red.tif This map represents the climatology time series of red reflectance in period of four-days in rivers and lakes of central Amazon basin between 2003 and 2017 (15 years). Number of Bands: 92 (each band represent a date that is identified in dates.txt file) Values between 0 and 10000. Pixel Type: floating point Pixel Depth: 32 bit No Data Value: 0本数据集目录包含以下GeoTIFF格式的地图数据：开阔水域频率图、各波段（红光与近红外）反射率时间序列数据，以及悬浮泥沙浓度（SSSC，Surface Suspended Sediment Concentration）类别频率图。 Fassoni-Andrade, A. C. 与 Paiva, R. C. D.（2019）。《亚马逊河漫滩时空泥沙动态制图》，《环境遥感》，221卷，第94-107页。 https://www.sciencedirect.com/science/article/abs/pii/S0034425718305005 通讯作者：[e-mail] 1) 数据说明： 1.1) 空间表现类型：栅格（Raster） 格式：TIFF 行列数：7661、2405 像元尺寸（X,Y）：0.002245、0.002245（约250米） 1.2) 空间范围（坐标系）： 北：-0.025 西：-67.28 东：-50.081055 南：-5.424225 1.3) 空间参考属性（GCS_WGS_1984.prj文件）： 类型：地理坐标系 地理坐标参考：WGS 1984 开放地理空间联盟（OGC）熟知文本（WKT）格式如下： GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433], AUTHORITY["EPSG",4326]] 2) 各文件数据说明： 2.1) 文件：open_water_frequency.tif 该图展示了2003-2017年共15年间，亚马逊盆地中部河湖区域内每个像元处于开阔水域状态的频率（每4天统计一次）。 波段数：1 取值范围：0~100 像元类型：浮点型 像元深度：32位 无数据值：0 2.2) 文件：class_SSC_frequency.tif 该图展示了2003-2017年共15年间，亚马逊盆地中部河湖区域内每个像元属于地表悬浮泥沙浓度（SSSC）类别（高、中、低三类）的频率。 解读该类别频率图时需结合开阔水域频率图，以准确分析泥沙的时间动态特征。例如，某漫滩湖泊像元的低、中、高SSSC类别频率分别为10%、30%、20%，则该像元有40%的时间不处于开阔水域状态。 波段数：3 波段1：低SSSC类别；波段2：中SSSC类别；波段3：高SSSC类别 最优可视化波段组合：无对比度调整下的R(3)G(2)B(1)（即波段3映射至红通道、波段2映射至绿通道、波段1映射至蓝通道） 取值范围：0~100 像元类型：双精度型 像元深度：64位 无数据值：0 2.3) 文件：time_series_nir.tif 该图展示了2003-2017年共15年间，亚马逊盆地中部河湖区域内每4天一期的近红外（NIR，Near Infrared）反射率气候学时间序列。 波段数：92（每个波段对应一个日期，日期信息详见dates.txt文件） 取值范围：0~10000 像元类型：浮点型 像元深度：32位 无数据值：0 2.4) 文件：time_series_red.tif 该图展示了2003-2017年共15年间，亚马逊盆地中部河湖区域内每4天一期的红光反射率气候学时间序列。 波段数：92（每个波段对应一个日期，日期信息详见dates.txt文件） 取值范围：0~10000 像元类型：浮点型 像元深度：32位 无数据值：0