We present the global research landscape which aims to deliver a measurement
infrastructure to underpin atmospheric observations of key greenhouse gases governing …

Direct tunable diode laser absorption spectroscopy (TDLAS) was combined in this study with
metrological principles on the determination of uncertainties to measure the line strengths of …

Between June 2010 and June 2011, the National Institute of Standards and Technology
(NIST) gravimetrically prepared a suite of 20 carbon dioxide (CO2) in air primary standard …

The National Institute of Standards and Technology (NIST) recently began to develop
standard mixtures of greenhouse gases as part of a broad program mandated by the 2009 …

Metrological traceability is the property of a measurement result whereby it can be related to
a stated reference through a documented unbroken chain of calibrations, each contributing …

Abstract The use of Certified Reference Materials (CRMs) is of utmost importance to achieve
the comparability and traceability of data, which are essential features of measurement …

The rising levels of carbon dioxide in the atmosphere are responsible for fundamental
changes occurring in seawater carbonate chemistry. The partial pressure of oceanic CO 2 …

The precision of optically based techniques for long term CO 2 monitoring in the atmosphere
is approaching the±0.02 µmol mol− 1 level, however biases of potentially up to fifteen times …

This work reports on the development of a technique for the precise analysis of ambient SF
6. This technique, which involves a gas chromatograph/electron capture detector (GC-ECD) …

We have shown that an exchange dilution preparation method reduces the impact of surface
adsorption of the target component in high-pressure gas mixtures used for underpinning …