A COUPLED RETRIEVAL OF COLUMNAR WATER VAPOR AND CANOPY WATER CONTENT FROM SPACEBORNE HYPERSPECTRAL MEASUREMENTS

被引：1

作者：

Bohn, Niklas ^{[1
]}

Kuester, Theres ^{[1
]}

Segl, Karl ^{[1
]}

Guanter, Luis ^{[1
]}

机构：

[1] GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany

来源：

2019 10TH WORKSHOP ON HYPERSPECTRAL IMAGING AND SIGNAL PROCESSING - EVOLUTION IN REMOTE SENSING (WHISPERS) | 2019年

关键词：

canopy water content; water vapor; imaging spectroscopy; hyperspectral; EnMAP; IMAGING SPECTROSCOPY; LEAF; REFLECTANCE;

D O I：

10.1109/whispers.2019.8920860

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Imaging spectroscopy allows to identify and quantify water in different states based upon their discriminative absorption lines in the solar spectrum. We developed a coupled columnar water vapor (CWV) and canopy water content (CWC) retrieval method for spaceborne hyperspectral measurements like DESIS, PRISMA or the upcoming EnMAP mission. We linked the MODTRAN radiative transfer code to a surface reflectance model based on the Beer-Lambert law and quantified uncertainties using the maximum likelihood estimation. We simulated EnMAP TOA radiances using a coupling of PROSPECT, HySimCaR and EeteS. CWV and CWC were retrieved showing an R-2 of 0.991 and 0.965, respectively. We observed a systematic overestimation of CWC by a factor of 3.374 since our model does not take into account volume scattering and different penetration depths within the canopy.

引用

页数：5

共 50 条

[31] A method for retrieving water vapor columnar content and aerosol optical thickness
Bassani, C.
Cavalli, R. M.
Estelles, V.
Gomez-Amo, J. L.
Martinez-Lozano, J. A.
Pignatti, S.
Utrillas, M. P.
EARTH OBSERVATION FOR VEGETATION MONITORING AND WATER MANAGEMENT, 2006, 852 : 266 - +
[32] Effect of Broken Clouds on Satellite-Based Columnar Water Vapor Retrieval
Chylek, Petr
Borel, Christoph
Davis, Anthony B.
Bender, Steven
Augustine, John
Hodges, Gary
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2004, 1 (03) : 175 - 178
[33] Estimating the atmospheric water vapor content from sun photometer measurements
Plana-Fattori, A
Legrand, M
Tanre, D
Devaux, C
Vermeulen, A
JOURNAL OF APPLIED METEOROLOGY, 1998, 37 (08): : 790 - 804
[34] Retrieval of daytime total columnar water vapour from MODIS measurements over land surfaces
Diedrich, H.
Preusker, R.
Lindstrot, R.
Fischer, J.
ATMOSPHERIC MEASUREMENT TECHNIQUES, 2015, 8 (02) : 823 - 836
[35] Retrieval of Vegetation Canopy Water Content Based on Spectral Index Method
Zhang, Linjing
Ma, Hongzhang
Zhu, Xiaobo
Sun, Lin
PROGRESS IN ENVIRONMENTAL PROTECTION AND PROCESSING OF RESOURCE, PTS 1-4, 2013, 295-298 : 2446 - +
[36] Retrieval of water constituents from spaceborne imaging spectrometer data
Neumann, A
Krawczyk, H
Hetscher, M
Walzel, T
Zimmermann, G
PHYSICAL MEASUREMENTS AND SIGNATURES IN REMOTE SENSING, VOLS 1 AND 2, 1997, : 567 - 573
[37] Estimating canopy water content from spectroscopy
Ustin, Susan L.
Riano, David
Hunt, E. Raymond, Jr.
ISRAEL JOURNAL OF PLANT SCIENCES, 2012, 60 (1-2) : 9 - 23
[38] AIRBORNE AND SPACEBORNE LIDAR MEASUREMENTS OF WATER-VAPOR PROFILES - A SENSITIVITY ANALYSIS
ISMAIL, S
BROWELL, EV
APPLIED OPTICS, 1989, 28 (17): : 3603 - 3615
[39] Retrieval of precipitation and water vapor content on the basis of satellite observations
Kondrat'ev, K.Ya.
Issledovanie Zemli iz Kosmosa, 1993, (05): : 105 - 110
[40] Physically-Based Retrieval of Canopy Equivalent Water Thickness Using Hyperspectral Data
Wocher, Matthias
Berger, Katja
Danner, Martin
Mauser, Wolfram
Hank, Tobias
REMOTE SENSING, 2018, 10 (12)

← 1 2 3 4 5 →