Gary D. Spiers

TL;DR: The Laser Ranging Interferometer (LRI) instrument on the GRACE Follow-On mission has provided the first laser interferometric range measurements between remote spacecraft, separated by approximately 220 km.

TL;DR: Airborne measurements of CO(2) column abundance conducted during two 2009 campaigns using a 2.05 μm laser absorption spectrometer provide insight into the capabilities of the IPDA method for both airborne measurements and future global-scale CO( 2) measurements from low Earth orbit pertinent to the NASA Active Sensing of CO (2) Emissions over Nights, Days, and Seasons mission.

TL;DR: The first public release of the OCO-3 Level 2 (L2) data products, called vEarly, is being distributed by NASA's Goddard Earth Sciences Data and Information Services Center (GES DISC).

TL;DR: In this paper, the integrated path differential absorption (IPDA) method is used for the CO2 column mole fraction retrievals over complex terrain and variable atmospheric conditions for both airborne measurements and future global-scale CO2 measurements from low-Earth orbit pertinent to the proposed NASA Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) mission.

TL;DR: In this paper, first-order line-mixing parameters of 13 CO 2 and 18 OCO transitions near 2.05μm were measured using tunable laser spectroscopy.