DOI: 10.5281/zenodo.5575332
title: mDRONES4RIVERS mobile field spectroscopy

description: Zip - Folders containing processed mobile field spectroscopy measurementes, collected each during the campaigns within the frame of the mDRONES4RIVERS project in the years 2019, 2020 and 2021 respectively. Measurement were conducted in river-shore areas along the Rhine in Emmericher Ward, Nonnenwerth, Niederwerth, Kuehkopf and Laubenheim in Germany, to accompany airborne, multispectral mapping and to collect representative hyperspectral signatures of vegetation and sediments. The incoming radiance is measured with optics of hemispherical (~180°) field of view and the reflected radiance with conical (~25°) field of view, optics were stabilized with and active gimbal. The data is present as human-readable .csv files and structured for each year in folders named with date and place of recording. Raw data, calibrated reflectance, reflected radiance, incoming radiance from measurements with the RoX field-spectrometer and derived vegetation indices (VI) are in subfolder /JB-112-GX/. Associated photos for each recorded footprint are collected in the /fotos/ folder. The derived level-2 data products are placed in /mD4R_L3-products/ and contains an overview table with unique ID, summarized meta-data including notes from the field protocol, associted photo-ID, GPS coordinates in WGS-84 and in ETRS 89 - 32N, classification information in 4 levels of differentiation and VI for each recorded footprint. In addition is the deconvolved multispectral reflectance response for the MicaSense Red Edge and Red Edge Blue, as well as the Gyrocopter costum sensor PanX 3.0 with all available filters reported with mean and standard deviation for each footprint in an individual file per sensor. Furthermore, this folder contains the mean and standard deviation of the hyperspectral reflectance as recorded by the RoX for each footprint. Primary key for all tables is the collumn IDMD4R, which contains a unique identifier for each footprint, composed out of the short for place of recording, year of recording, season (1 - winter, 2 - spring, 3- summer, 4 - fall), date, work group and running index. In addition, the protocol.txt file contains the raw notes taken during the field measurements. The same information is also present in the notes column of the overview table in the products folder. Folder structure: Year of acquisition date and place of recording /JB-112-GX/ - raw RoX data, calibrated radiance and reflectance and ALL_INDEX file. The first collumn contains the associated central wavelengths, the first row the time of recording, each subsequent field of the table contains the calibrated radiance (in W m<sup>-2</sup> sr<sup>-1</sup> nm<sup>-1</sup>) or reflectance (unitless) values. /fotos/ - associated photograf of each recorded foodprint /mD4R_L3-products/ - mDRONES4RIVERS-specific, higher data products including an overview table with summarized meta-data information, multispectral and hyperspectral reflectance summarized for each recoreded foodprint. Example overview table header, containing meta-data: IDMD4R Num Place Year Season Theme lvl1 lvl2 lvl3 lvl4 lvl5 lvlx BfG_Notes Notes Foto_ID start_time end_time Footprint_m2 GPS_lat_WGS84 GPS_lon_WGS84 GPS_lat_ETRS89 GPS_lon_ETRS89 mean_E_stability.full.... mean_PAR.inc..W.m.2. mean_PAR.ref..W.m.2. mean_APAR..umol.m.2.s.1. mean_NDVI mean_PRI mean_MTCI mean_SR mean_EVI mean_REP mean_TCARI mean_REDCl mean_mCRI mean_RDVI mean_OSAVI mean_MSAVI mean_TVI mean_CCI EW_2021_3_210908_JB_001 1 EW 2021 3 HM Boden unverbaut mineralisch Kies Grobkies_Steine_Muscheln nass 1 Sediment - nass 9 IMG_1665.JPG ########## ########## 0.1 51.8348 6.19 5746398 306400 0.3664672 264.5846 25.20264 106.4731 0.02714115 -0.0875076 -0.00392978 1.001599 0.01267476 29397.69 0.01333844 -0.01631207 -3.420476 0.01293765 0.01847472 0.01008311 0.1409599 -0.1199355
description: This work was supported through the joint research project "mDRONES4rivers" by the Federal Ministry of Transport and Digital Infrastructure – BMVI (19F2054A-D).