Ocean Surface Skin Temperature Measurements using an Optimal Spectral Band

使用最佳光谱带测量海洋表面皮肤温度

• 批准号: 2241269
• 负责人: Andrew Jessup
• 金额: $ 29.94万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2241269&HistoricalAwards=false
• 关键词: Ocean; Surface; Skin; Temperature; Measurements

This project is to develop a novel technique for measuring the ocean skin temperature from a radiometer. Normally skin temperature measurements from radiometers have been made from ships and have required in situ two-point calibration, a separate sky measurement to account for downwelling radiance, and entail uncertainty in the emissivity. The PI is already developing a radiometer that utilizes a single point calibration scheme. This project will leverage the ongoing radiometer development to eliminate the need for a sky measurement and reduce the effect of emissivity uncertainty. The result will be that practical and accurate skin temperature measurements can be made from unmanned surface vehicles and buoys as well as oceanographic research vessels. The availability of accurate skin temperature observations could lead to improved models for near-surface stratification and validation of satellite measurements.This project leverages an ongoing NSF project by the PI to develop the InfraRed In situ Skin Sensing (IRISS) radiometer for the further development of a technique that eliminates the need for separate sky measurements in measuring ocean skin temperature and provides a significant reduction in the effect of emissivity. The technique uses an optimal spectral band in which the reflected sky radiance is from the atmosphere within a 1-2 km of the ship. The combined simplification of a single ambient temperature calibration and no sky measurement will significantly increase the practicality and accessibility of ocean surface skin temperature measurements. As a result it will be possible to make practical and accurate skin temperature measurements from a variety of observation platforms, including USVs, buoys, and ships. The goal is to facilitate skin temperature measurements with accuracies comparable to those currently made from oceanographic research vessels.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目是开发一种新型技术，用于测量辐射计的海洋温度。通常，辐射仪的皮肤温度测量是由船只制成的，并且需要原位两点校准，这是一个单独的天空测量，以解释降低的辐射，并导致发射率的不确定性。 PI已经开发了使用单点校准方案的辐射计。该项目将利用正在进行的辐射计的开发来消除对天空测量的需求，并减少发射不确定性的效果。结果将是可实用，准确的皮肤温度测量值可以由无人的地表车辆和浮标以及海洋学研究容器进行。准确的皮肤温度观察的可用性可能会导致改进的模型，以进行近乎表面的分层和验证卫星测量结果。该项目利用PI的NSF项目正在进行的NSF项目，以开发红外的原位感测（IRISS）辐射计（Iriss）辐射计，以进一步开发一项技术，从而消除了在测量海洋中进行分离的测量，并提供了大量的生产，并可以重新构建生产，从而实现了重大的生产，并且可以实现生产的重新定位。该技术使用了最佳光谱带，其中反射的天空辐射来自船只1-2公里的大气。单个环境温度校准和无天空测量的合并简化将显着提高海面皮肤温度测量的实用性和可及性。结果，可以通过各种观察平台（包括USV，浮标和船只）进行实用，准确的皮肤温度测量。目的是促进皮肤温度测量，准确度与当前由海洋学研究船相媲美的精确度。该奖项反映了NSF的法定任务，并使用基金会的智力优点和更广泛的影响评估标准，认为值得通过评估来获得支持。