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An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue

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Light absorption measurements: new techniques.

G Hänel, R Busen, C Hillenbrand

|April 8, 2010

Summary

A new radiometer simplifies solar wavelength radiation measurements. Aerosol particle absorption significantly increases atmospheric temperature, particularly in industrial areas.

Area of Science:

Atmospheric Science
Radiometry
Aerosol Physics

Background:

Accurate measurement of solar radiation is crucial for understanding atmospheric processes.
Aerosol particles play a significant role in Earth's energy budget by absorbing solar radiation.
Existing methods for measuring aerosol light absorption can be complex and time-consuming.

Purpose of the Study:

To describe a new radiometer designed for simplified measurement of solar wavelength radiation.
To present two methods for quantifying radiant energy absorbed by aerosol particles: photometric and calorimetric.
To determine the atmospheric heating rate caused by aerosol light absorption.

Main Methods:

Development and description of a novel radiometer for solar radiation measurement.

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Application of a photometric technique for analyzing aerosol particles collected on filters.

Utilization of a calorimetric technique for in situ measurement of radiant energy absorption by aerosols.

Main Results:

The new radiometer simplifies the measurement of solar radiation supply.
Both photometric and calorimetric methods effectively quantify aerosol light absorption.
Data indicate substantial atmospheric temperature increases attributable to aerosol absorption, especially in industrial regions.

Conclusions:

The developed radiometer and absorption measurement techniques provide valuable data for atmospheric heating rate calculations.
Aerosol light absorption is a significant factor contributing to atmospheric warming.
Findings highlight the impact of industrial emissions on atmospheric temperature through aerosol absorption.