https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/Head https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://www.nanopub.org/nschema#hasAssertion https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/assertion https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://www.nanopub.org/nschema#hasProvenance https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/provenance https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/pubinfo https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/assertion https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://purl.org/dc/terms/creator https://orcid.org/0000-0002-5036-2152 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://purl.org/dc/terms/creator https://orcid.org/0000-0003-1056-1269 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://purl.org/dc/terms/creator https://orcid.org/0000-0003-1245-1653 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://purl.org/dc/terms/publisher https://ror.org/00bjwbm70 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://purl.org/dc/terms/subject http://aims.fao.org/aos/agrovoc/c_6498 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/fair/ff/terms/article https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/fdof/ontology#FAIRDigitalObject https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://www.w3.org/2000/01/rdf-schema#comment This paper summarizes the design and calibration of a radiometer system designed for validating Landsat Band 7 and Sentinel-2 Band 12 (2110 to 2290nm) measurements from an unoccupied aerial vehicle (UAV). This system and these satellite bands are often used to measure snow reflectance, which is critical to the Earth’s energy and water balance. The system uses two radiometers, one for measuring upwelling radiance [W/(m2 sr)] and one for measuring downwelling irradiance [W/m2]. The upwelling radiometer was constructed with a single-pixel photodiode and a lens assembly to maximize the field of view for measuring snow-reflected radiance. The downwelling radiometer uses the same detector with a ground-glass diffuser to measure all-sky downwelling irradiance. The upwelling and downwelling radiometers use custom interference filters to achieve the closest match to the satellite spectral bands. The upwelling system has a half-angle field of view of 3.43 degrees. When flown at an above grove level of 120m, this corresponds to a ground swath of diameter 14.39m, a spatial resolution over twice the 30m spatial resolution of a Landsat Band 7 pixel. The instrument is intended to be deployed in colder climates; therefore, a temperature calibration was conducted to reduce uncertainties in the radiometric calibration due to large deviations in the operating temperature. https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products http://www.w3.org/2000/01/rdf-schema#label Development of a SWIR UAV-based radiometer for validating Landsat 8/9 snow products https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://schema.org/funder https://ror.org/021nxhr62 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://w3id.org/fdof/ontology#hasMetadata https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://www.w3.org/ns/dcat#contactPoint joseph.shaw@montana.edu https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://www.w3.org/ns/dcat#endDate March 19 2025 https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://www.w3.org/ns/dcat#startDate 2024 https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/provenance https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/assertion http://www.w3.org/ns/prov#wasAttributedTo https://orcid.org/0009-0008-8411-2742 https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/pubinfo https://orcid.org/0009-0008-8411-2742 http://xmlns.com/foaf/0.1/name Emily Regalado https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://purl.org/dc/terms/created 2026-05-01T18:13:07.536Z https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://purl.org/dc/terms/creator https://orcid.org/0009-0008-8411-2742 https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://purl.org/dc/terms/license https://creativecommons.org/licenses/by/4.0/ https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://purl.org/nanopub/x/introduces https://www.researchgate.net/publication/389999982_Development_of_a_SWIR_UAV-based_radiometer_for_validating_Landsat_89_snow_products https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 http://purl.org/nanopub/x/wasCreatedAt https://nanodash.knowledgepixels.com/ https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://w3id.org/np/o/ntemplate/wasCreatedFromProvenanceTemplate https://w3id.org/np/RA7lSq6MuK_TIC6JMSHvLtee3lpLoZDOqLJCLXevnrPoU https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RACJ58Gvyn91LqCKIO9zu1eijDQIeEff28iyDrJgjSJF8 https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RAukAcWHRDlkqxk7H2XNSegc1WnHI569INvNr-xdptDGI https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate https://w3id.org/np/RArM5GTwgxg9qslGX-XiQ-KTTUwdoM0KB1YqmT4GqTizA https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/sig http://purl.org/nanopub/x/hasAlgorithm RSA https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/sig http://purl.org/nanopub/x/hasPublicKey MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxzr6UBGMW6c8tegz0babaledWUEQ0PLDE4tp7Iinbe2DZtAtY5JUptKYuStWDZx+QER4808P8dejNWRnBDzgthYJm/AyNSXflHSJhz2+NC+h7RylOLxbwLEQocmyKKiYxa2gT85m6ajVL2M6TnfG67nnK+K2f7iCGL6wYXRITD1q+7+5SWqBdDXIV921W4IKWaD2GJk+NRBoOqQhbsrk8Tn5XsNd7DMYVHk47oMDGbeBnrOIoRPsbBgAcoCsxxhiB9yN6Lf8EUbnlXVEDzJuZk048L1BDZL+6nkA8btTQGP2ijUFWA7rTrod3LjUDQWLZS95njjl867dtmv/znYkzwIDAQAB https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/sig http://purl.org/nanopub/x/hasSignature q4Uf8uOVRSkCnEUMwilVjKtMQCplz1C1SYOgRwjANIXV5ZlKOQLFS2NeVOLIJMKHAgDKIT0VXrliaa4fMgcbLBBgj9fxFiF92sK7bUSz3N8SCl0NqDhUTaGn90Jb5dOEipBjiJh8BY+NUb+Le8NsRw9g/V4tIMwI2PT+b5W3KhJYfunPwjjF0TGT70vTLXY5sHSxArZSUo2+vqWymMdsh5kl9Jk+irVYodCNxLHkrkCmfmRCijUp2/JavvIjqfkUyeQdOA9kbTeJi6SY8UliUMFxjwaYog2Y8ltFJULc6yYW0f4+wWePch5A/0ROk5HPGasAjGWoNm9udd21Kfozvw== https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/sig http://purl.org/nanopub/x/hasSignatureTarget https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94 https://w3id.org/np/RANwI2E8BjvURttUnhbewyV-f4MOC0F2cFaexBfEiDK94/sig http://purl.org/nanopub/x/signedBy https://orcid.org/0009-0008-8411-2742