{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T13:22:09Z","timestamp":1762867329658,"version":"build-2065373602"},"reference-count":46,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2018,1,12]],"date-time":"2018-01-12T00:00:00Z","timestamp":1515715200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Land surface shortwave broadband albedo is a key parameter in general circulation models and surface energy budget models. Multispectral satellite data are typically used to generate broadband albedo products in a three-step process: atmospheric correction, for converting the top-of-atmosphere observations to surface directional reflectance; angular modeling, for converting the surface directional reflectance to spectral albedo of each individual band; and finally, narrowband-to-broadband conversion, for transforming the spectral albedos to broadband albedos. Spectroradiometers can be used for validating surface directional reflectance products and pyranometers or broadband albedometers, for validating broadband albedo products, but spectral albedo products are rarely validated using ground measurements. In this study, we designed a new type of albedometer that can measure spectral albedos. It consists of multiple interference filters and a silicon detector, for measuring irradiance from 400\u20131100 nm. The linearity of the sensors is 99%, and the designed albedometer exhibits consistency up to 0.993, with a widely-used commercial instrument. A field experiment for measuring spectral albedo of grassland using this new albedometer was conducted in Yudaokou, China and the measurements are used for validating the MODerate Resolution Imaging Spectroradiometer (MODIS) spectral albedos. The results show that the biases of the MODIS spectral albedos of the first four bands are \u22120.0094, 0.0065, 0.0159, and \u22120.0001, respectively. This new instrument provides an effective technique for validating spectral albedos of any satellite sensor in this spectral range, which is critical for improving satellite broadband albedo products.<\/jats:p>","DOI":"10.3390\/rs10010101","type":"journal-article","created":{"date-parts":[[2018,1,15]],"date-time":"2018-01-15T04:01:55Z","timestamp":1515988915000},"page":"101","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Design of a Novel Spectral Albedometer for Validating the MODerate Resolution Imaging Spectroradiometer Spectral Albedo Product"],"prefix":"10.3390","volume":"10","author":[{"given":"Hongmin","family":"Zhou","sequence":"first","affiliation":[{"name":"The State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, China"},{"name":"Beijing Engineering Research Center for Global Land Remote Sensing Products, Institute of Remote Sensing Science and Engineering, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4962-4888","authenticated-orcid":false,"given":"Jindi","family":"Wang","sequence":"additional","affiliation":[{"name":"The State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences, Beijing 100875, China"},{"name":"Beijing Engineering Research Center for Global Land Remote Sensing Products, Institute of Remote Sensing Science and Engineering, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2708-9183","authenticated-orcid":false,"given":"Shunlin","family":"Liang","sequence":"additional","affiliation":[{"name":"Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,1,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1016\/S0065-2687(08)60176-4","article-title":"Land surface processes and climate surface albedos and energy-balance","volume":"25","author":"Dickinson","year":"1983","journal-title":"Adv. Geophys."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Wang, K., Liang, S., Schaaf, C.L., and Strahler, A.H. (2010). Evaluation of Moderate Resolution Imaging Spectroradiometer land surface visible and shortwave albedo products at FLUXNET sites. J. Geophys. Res. Atmos., 115.","DOI":"10.1029\/2009JD013101"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1016\/j.rse.2013.08.025","article-title":"Evaluation of MODIS albedo product (MCD43A) over grassland, agriculture and forest surface types during dormant and snow-covered periods","volume":"140","author":"Wang","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1175\/2009JAMC2134.1","article-title":"Evaluation of snow albedo in land models for weather and climate studies","volume":"49","author":"Wang","year":"2010","journal-title":"J. Appl. Meteorol. Climatol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1","DOI":"10.5194\/hess-3-1-1999","article-title":"Deriving albedo maps for HAPEX-Sahel from ASAS data using kernel-driven BRDF models","volume":"3","author":"Lewis","year":"1999","journal-title":"Hydrol. Earth Syst. Sci. Discuss."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/S0034-4257(00)00205-4","article-title":"Narrowband to broadband conversions of land surface albedo I: Algorithms","volume":"76","author":"Liang","year":"2000","journal-title":"Remote Sens. Environ."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1016\/S0034-4257(02)00091-3","article-title":"First operational BRDF, albedo nadir reflectance products from MODIS","volume":"83","author":"Schaaf","year":"2002","journal-title":"Remote Sens. Environ."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"18099","DOI":"10.1029\/2000JD900113","article-title":"Surface albedo retrieval from Meteosat: 1. Theory","volume":"105","author":"Pinty","year":"2000","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"577","DOI":"10.1002\/2013JD020417","article-title":"Direct estimation of land surface albedo from VIIRS data: Algorithm improvement and preliminary validation","volume":"118","author":"Wang","year":"2013","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4825","DOI":"10.1002\/2015JD023178","article-title":"Estimating daily mean land surface albedo from MODIS data","volume":"120","author":"Wang","year":"2015","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2605","DOI":"10.1109\/TGRS.2017.2648847","article-title":"Direct Estimation of Land Surface Albedo From Simultaneous MISR Data","volume":"55","author":"He","year":"2017","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1016\/S0034-4257(02)00092-5","article-title":"Validating MODIS land surface reflectance and albedo products: Methods and preliminary results","volume":"83","author":"Liang","year":"2002","journal-title":"Remote Sens. Environ."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Wang, K., Liu, J., Zhou, X., Sparrow, M., Ma, M., Sun, Z., and Jiang, W. (2004). Validation of the MODIS global land surface albedo product using ground measurements in a semidesert region on the Tibetan Plateau. J. Geophys. Res. Atmos., 109.","DOI":"10.1029\/2003JD004229"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1016\/j.rse.2012.02.019","article-title":"Intercomparison of MODIS albedo retrievals and in situ measurements across the global FLUXNET network","volume":"121","author":"Cescatti","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1175\/1520-0450(1999)038<0239:AIMTDS>2.0.CO;2","article-title":"An improved method to derive surface albedo from narrowband AVHRR satellite data: Narrowband to broadband conversion","volume":"38","author":"Song","year":"1999","journal-title":"J. Appl. Meteorol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1147","DOI":"10.1080\/01431169508954468","article-title":"Narrow-band to broad-band conversion for meteosat-visiible channel and broad-band albedo using both AVHRR-1 and-2 channels","volume":"16","author":"Valiente","year":"1995","journal-title":"Remote Sens."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/S0034-4257(00)00125-5","article-title":"A comparison of satellite-derived spectral albedos to ground-based broadband albedo measurements modeled to satellite spatial scale for a semidesert landscape","volume":"74","author":"Lucht","year":"2000","journal-title":"Remote Sens. Environ."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1297","DOI":"10.5194\/tc-10-1297-2016","article-title":"Development and calibration of an automatic spectral albedometer to estimate near-surface snow SSA time series","volume":"10","author":"Picard","year":"2016","journal-title":"Cryosphere"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1002\/2013JD020689","article-title":"Estimating the broadband longwave emissivity of global bare soil from the MODIS shortwave albedo product","volume":"119","author":"Cheng","year":"2014","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"7","DOI":"10.5194\/angeo-24-7-2006","article-title":"Measurements of spectral snow albedo at Neumayer, Antarctica","volume":"24","author":"Wuttke","year":"2006","journal-title":"Ann. Geophys."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.rse.2013.08.044","article-title":"Comparing MODIS daily snow albedo to spectral albedo field measurements in Central Greenland","volume":"140","author":"Wright","year":"2014","journal-title":"Remote Sens. Environ."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"18669","DOI":"10.1029\/94JD01484","article-title":"Reflection of solar radiation by the Antarctic snow surface at ultraviolet, visible, and near-infrared wavelengths","volume":"99","author":"Grenfell","year":"1994","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Hudson, S.R., Warren, S.G., Brandt, R.E., Grenfell, T.C., and Six, D. (2006). Spectral bidirectional reflectance of Antarctic snow: Measurements and parameterization. J. Geophys. Res. Atmos., 111.","DOI":"10.1029\/2006JD007290"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"407","DOI":"10.1016\/j.rse.2014.11.013","article-title":"Characterisation of the HDRF (as a proxy for BRDF) of snow surfaces at Dome C, Antarctica, for the inter-calibration and inter-comparison of satellite optical data","volume":"158","author":"Marks","year":"2015","journal-title":"Remote Sens. Environ."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"736","DOI":"10.1111\/j.1751-1097.1995.tb08723.x","article-title":"Spectral albedo measurements in the UV and visible region over different types of surfaces","volume":"62","author":"Feister","year":"1995","journal-title":"Photochem. Photobiol."},{"key":"ref_26","first-page":"323","article-title":"The albedo of various surfaces of ground","volume":"7","year":"1925","journal-title":"Geogr. Ann."},{"key":"ref_27","unstructured":"King, D.L., and Myers, D.R. (October, January 29). Silicon-photodiode pyranometers: Operational characteristics, historical experiences, and new calibration procedures. Proceedings of the Conference Record of the Twenty Sixth IEEE Photovoltaic Specialists Conference\u20141997, Anaheim, CA, USA."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1016\/0038-092X(95)00017-L","article-title":"Cosine response characteristics of some radiometric and photometric sensors","volume":"54","author":"Michalsky","year":"1995","journal-title":"Sol. Energy"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1982","DOI":"10.1117\/12.59910","article-title":"Optical characteristics of Teflon AF fluoroplastic materials","volume":"31","author":"Lowry","year":"1992","journal-title":"Opt. Eng."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"4615","DOI":"10.3390\/s90604615","article-title":"A new and inexpensive pyranometer for the visible spectral range","volume":"9","author":"Enrique","year":"2009","journal-title":"Sensors"},{"key":"ref_31","unstructured":"Apfel, J.H. (1972). Infra-Red Interference Filter. (3,682,528 A), U.S. Patent."},{"key":"ref_32","unstructured":"Yokota, S., Sugiyama, M., Kawagoe, N., and Miyaura, T. (1989). Spectral Sensor with Interference Filter. (4,822,998A), U.S. Patent."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/S0196-8904(99)00088-6","article-title":"Measurement of solar energy radiation at Okigwe using silicon solar cell","volume":"41","author":"Ndukwe","year":"2000","journal-title":"Energy Convers. Manag."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Xu, Z., Liu, S., Li, X., Shi, S., Wang, J., Zhu, Z., Xu, T., Wang, W., and Ma, M. (2013). Intercomparison of surface energy flux measurement systems used during the HiWATER-MUSOEXE. J. Geophys. Res. Atmos., 118.","DOI":"10.1002\/2013JD020260"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"977","DOI":"10.1109\/36.841980","article-title":"An algorithm for the retrieval of albedo from space using semiempirical BRDF models","volume":"38","author":"Lucht","year":"2000","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_36","unstructured":"Shuai, Y. (2010). Tracking Daily Land Surface Albedo and Reflectance Anisotropy with MODerate-Resolution Imaging Spectroradiometer (MODIS), Boston University."},{"key":"ref_37","unstructured":"Lewis, P., and Barnsley, M.J. (1994, January 17\u201324). Influence of the sky radiance distribution on various formulations of the Earth surface albedo. Proceedings of the International Symposium on Physical Measurements & Signatures in Remote Sensing Isprs, Val d\u2019Isere, France."},{"key":"ref_38","unstructured":"Hubaks, P., Platnik, S., King, M., and Ridgway, B. (2018, January 09). MODIS Atmosphere L3 Gridded Product Algorithm Theoretical Basis Document (ATBD) & Users Guide, Available online: https:\/\/modis-atmos.gsfc.nasa.gov\/_docs\/L3_ATBD_C6_2015_05_06.pdf."},{"key":"ref_39","unstructured":"Remer, L.A., Tanre, D., Kaufman, Y.J., Levy, R., and Mattoo, S. (2018, January 09). Algorithm for Remote Sensing of Tropospheric Aerosol from MODIS: Collection 005. Natl. Aeronaut. Space Admin.. Available online: https:\/\/pdfs.semanticscholar.org\/566d\/19c074f199963abba848ad53b77062d1333d.pdf."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Calleja, J.F., Recondo, C., Pe\u00f3n, J., Fern\u00e1ndez, S., De La Cruz, F., and Gonz\u00e1lez-Piqueras, J. (2016). A New Method for the Estimation of Broadband Apparent Albedo Using Hyperspectral Airborne Hemispherical Directional Reflectance Factor Values. Remote Sens., 8.","DOI":"10.3390\/rs8030183"},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Degenhardt, C., Prescher, G., Frach, T., Thon, A., De Gruyter, R., Schmitz, A., and Ballizany, R. (November, January 24). The digital silicon photomultiplier\u2014A novel sensor for the detection of scintillation light. Proceedings of the 2009 IEEE Nuclear Science Symposium Conference Record (NSS\/MIC), Orlando, FL, USA.","DOI":"10.1109\/NSSMIC.2009.5402190"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/j.rse.2017.10.031","article-title":"Evaluating land surface albedo estimation from Landsat MSS, TM, ETM+, and OLI data based on the unified direct estimation approach","volume":"204","author":"He","year":"2018","journal-title":"Remote Sens. Environ."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1016\/j.rse.2011.10.002","article-title":"Evaluation of Moderate-resolution Imaging Spectroradiometer (MODIS) snow albedo product (MCD43A) over tundra","volume":"117","author":"Wang","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1016\/j.rse.2014.11.023","article-title":"Spatial scaling of reflectance and surface albedo over a mixed-use, temperate forest landscape during snow-covered periods","volume":"158","author":"Burakowski","year":"2015","journal-title":"Remote Sens. Environ."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/0038-092X(82)90204-3","article-title":"An improved pyranometer","volume":"29","author":"Proctor","year":"1982","journal-title":"Sol. Energy"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"677","DOI":"10.1175\/1520-0426(1998)015<0677:IIPD>2.0.CO;2","article-title":"Investigations in pyranometer design","volume":"15","author":"Beaubien","year":"1998","journal-title":"J. Atmos. Ocean. Technol."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/1\/101\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T14:51:05Z","timestamp":1760194265000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/1\/101"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,1,12]]},"references-count":46,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2018,1]]}},"alternative-id":["rs10010101"],"URL":"https:\/\/doi.org\/10.3390\/rs10010101","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2018,1,12]]}}}