The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Scienc...The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Sciences(IAMAS).The role of the IRC is to promote fundamental research in atmospheric radiation and its applications to practical problems.展开更多
The Black Array of Broadband Absolute Radiometers Earth Radiation Imager(BABAR-ERI) is a small, adaptable nadir-pointed pushbroom imager to measure Earth-leaving broadband radiance from 0.3 ??m to 100 ??m with higher ...The Black Array of Broadband Absolute Radiometers Earth Radiation Imager(BABAR-ERI) is a small, adaptable nadir-pointed pushbroom imager to measure Earth-leaving broadband radiance from 0.3 ??m to 100 ??m with higher information content than is currently measured by reducing radiometric uncertainty and enabling cloud-resolving spatial resolution. The three-instrument BABAR-ERI suite fits a 12U CubeSat form factor and contains co-registered science telescope channels for measuring shortwave(0.3 ??m to 4.5 ??m band) and total radiance(0.3 ??m to 100 ??m band), dualchannel on-board radiance stability monitors, and a visible-wavelength camera. Novel, 1 × 32 element, electricalsubstitution radiometer pixels image the shortwave and total radiance in 1 km × 1 km co-registered ground footprints;longwave radiance(4.5 ??m to 100 ??m band) is derived from subtraction of the shortwave and total radiance. The dualchannel onboard stability monitors are radiance standard detectors, and their measurements, acquired concurrently with the science telescopes and at much different duty cycles for the dual channels, will be used to track and correct the degradation of the science channels. The single-channel, mid-visible camera facilitates geolocation pointing knowledge and provides scene context information and sub-pixel variability to facilitate measurement stability studies and enable process-level science studies at high spatial resolution. The detectors for the science channels and stability monitors are absolute, ambienttemperature, micro-fabricated, electrical-substitution radiometers with near-perfect optical absorptance across the measurement range from vertically aligned carbon nanotubes. The BABAR-ERI science channels will be characterized over the full measurement range and for variable Earth scenes and deep space temperatures during extensive ground calibrations.展开更多
The International Radiation Commission held its quadrennial International Radiation Symposium(IRS) in Hangzhou,China, from 17-21 June 2024. A lively meeting of 276 scientists from 18 countries occurred at the Zhejiang...The International Radiation Commission held its quadrennial International Radiation Symposium(IRS) in Hangzhou,China, from 17-21 June 2024. A lively meeting of 276 scientists from 18 countries occurred at the Zhejiang Sanli New Century Grand Hotel. There were ten oral and two poster sessions covering a wide range of topics, from radiative transfer theory and modeling to particle radiative properties, solar UV radiation, and ground-based measurements. This summary is not an exhaustive overview but rather a broad sample of the many talks delivered at IRS.展开更多
文摘The International Radiation Symposium(IRS) is a quadrennial symposium of the International Radiation Commission(IRC), one of the 11 commissions under the International Association of Meteorology and Atmospheric Sciences(IAMAS).The role of the IRC is to promote fundamental research in atmospheric radiation and its applications to practical problems.
基金supporting the BABAR array development and the BABAR-ERI instrument development (80NSSC20K0320)。
文摘The Black Array of Broadband Absolute Radiometers Earth Radiation Imager(BABAR-ERI) is a small, adaptable nadir-pointed pushbroom imager to measure Earth-leaving broadband radiance from 0.3 ??m to 100 ??m with higher information content than is currently measured by reducing radiometric uncertainty and enabling cloud-resolving spatial resolution. The three-instrument BABAR-ERI suite fits a 12U CubeSat form factor and contains co-registered science telescope channels for measuring shortwave(0.3 ??m to 4.5 ??m band) and total radiance(0.3 ??m to 100 ??m band), dualchannel on-board radiance stability monitors, and a visible-wavelength camera. Novel, 1 × 32 element, electricalsubstitution radiometer pixels image the shortwave and total radiance in 1 km × 1 km co-registered ground footprints;longwave radiance(4.5 ??m to 100 ??m band) is derived from subtraction of the shortwave and total radiance. The dualchannel onboard stability monitors are radiance standard detectors, and their measurements, acquired concurrently with the science telescopes and at much different duty cycles for the dual channels, will be used to track and correct the degradation of the science channels. The single-channel, mid-visible camera facilitates geolocation pointing knowledge and provides scene context information and sub-pixel variability to facilitate measurement stability studies and enable process-level science studies at high spatial resolution. The detectors for the science channels and stability monitors are absolute, ambienttemperature, micro-fabricated, electrical-substitution radiometers with near-perfect optical absorptance across the measurement range from vertically aligned carbon nanotubes. The BABAR-ERI science channels will be characterized over the full measurement range and for variable Earth scenes and deep space temperatures during extensive ground calibrations.
文摘The International Radiation Commission held its quadrennial International Radiation Symposium(IRS) in Hangzhou,China, from 17-21 June 2024. A lively meeting of 276 scientists from 18 countries occurred at the Zhejiang Sanli New Century Grand Hotel. There were ten oral and two poster sessions covering a wide range of topics, from radiative transfer theory and modeling to particle radiative properties, solar UV radiation, and ground-based measurements. This summary is not an exhaustive overview but rather a broad sample of the many talks delivered at IRS.
