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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
Field Parameter Metrology

Consider the consequences if nearby electronics could interfere with a jet's instruments or cause an automobile to stall. The Field Parameter … more

Fundamental Guided Wave Metrology

Radio-frequency (RF) waves and microwaves are involved with almost every facet of everyday life. Radio stations, television, wireless devices, … more

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

Aperture area measurements

Radiometric and photometric measurements require defining apertures. The accuracy to which these measurements can be accomplished requires … more

Hyperspectral Image Projector (HIP)

Detecting climate change with remote sensing instruments, providing state-of-the-art surveillance imagery for security and defense, or getting the … 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

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