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（地理标记图像文件格式）格式的地图数据：开阔水域频率、各波段（红光波段与近红外波段）反射率时间序列，以及地表悬浮泥沙浓度（Surface Suspended Sediment Concentration, SSSC）类别频率。引用文献：Fassoni-Andrade, A. C., & Paiva, R. C. D. (2019). 亚马逊河漫滩的时空泥沙动态制图. 《环境遥感（Remote Sensing of Environment）》, 221, 94-107. https://www.sciencedirect.com/science/article/abs/pii/S0034425718305005 通讯作者：[e-mail] 1) 数据描述： 1.1) 空间表示类型：栅格 格式：TIFF 行列数：7661、2405 像元尺寸（X,Y）：0.002245、0.002245（约250米） 1.2) 范围（坐标系）：顶部：-0.025 左侧：-67.28 右侧：-50.081055 底部：-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（Open Geospatial Consortium, OGC）熟知文本（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) 单个文件的数据说明： 2.1) 文件：open_water_frequency.tif 该地图表征亚马逊盆地中部河湖区域内，每个像元在2003-2017年共15年间，每4天周期内处于开阔水域状态的时长占比。波段数：1 取值范围：0至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 该地图表征亚马逊盆地中部河湖区域内，每个像元在2003-2017年15年间属于高、中、低三类地表悬浮泥沙浓度（SSSC）类别的频率。需结合开阔水域频率图解读该类别频率图中的泥沙时空动态。例如：某漫滩湖泊像元在低、中、高SSSC类别中的频率分别为10%、30%、20%，则该像元有40%的时间未处于开阔水域状态。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：R(3)、G(2)、B(1)，无需对比度调整 取值范围：0至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 该地图表征2003-2017年共15年间，亚马逊盆地中部河湖区域每4天周期的近红外（Near Infrared, NIR）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至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 该地图表征2003-2017年共15年间，亚马逊盆地中部河湖区域每4天周期的红光（Red）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至10000 像元类型：浮点型 像元深度：32位 无数据值：0