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Climate Science Measurements Portal

Earth’s climate is changing. But to get a clear assessment of these changes, scientists need to be sure that the vast amounts of climate data they collect are accurate. Accuracy is critical to the comparison of measurement results obtained in widely separated locations and at different times. Such results are often the basis for developing greater insights into the chemical and physical phenomena that cause our climate to change. Accurate measurements enable scientists to draw reliable conclusions. A stable, internationally-recognized frame of reference, such as the International System of Units (SI), provides the basis both for data comparability and for international acceptance of measurement results and insights concerning climatic behaviors. The work begun by Charles D. Keeling of Scripps Institution of Oceanography is an exceptional example of the value to the climate science community of a data record founded on close attention to methodologies that ensure accurate measurement results over long periods. More…

Programs and Projects
Fiber Sources and Applications

Optical frequency combs convert a laser source containing a single frequency of light into pulses that include thousands of frequencies. This … more

The NIST Standard Reference Photometer for Ozone Measurement Traceability

The NIST Standard Reference Photometer (SRP), developed jointly with the U.S. Environmental Protection Agency (USEPA), has provided an … more

Global Warming and Greenhouse Gases

The Gas Metrology Group has undertaken a major climate change program that involves collaborations with key stakeholders in the United States and … more

Measurements and Standards to Support Global Climate Change Studies

Much of the world's assessment and critical evaluation of currently available data on contributions to climate change comes from the … more

Applied spectroradiometry and imaging metrology

Spectroradiometers are widely used for acquiring colorimetric, photometric, and radiometric quantities with a single measurement for a variety of … more

Building the next generation reference reflectometer

ROSI (Robotic Optical Scatter Instrument) is a new facility for measuring reflectance and scattering of materials in the ultraviolet to short-wave … more

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