WebA firn air model is used to reconstruct southern-hemisphere atmospheric H 2 levels since the 1850s. The reconstruction is compared to the existing South Pole firn air … WebHowever, our estimation of the annual mean of air temperature at the ground based on the boundary layer theory is close to the mean 10 m firn temperature. The lowest air temperature (82.7°C) currently measured at the Dome A is not the lowest one ever recorded in Antarctica, but the extremely low mean 10 m firn temperature (58.2°C) indicates ...
Pure rotational Raman spectroscopy applied to N2/O2 analysis of air ...
WebDec 19, 2024 · Glacier surface albedo strongly affects glacier mass balance by controlling the glacier surface energy budget. As an indicator of the equilibrium line altitude (ELA), the glacier snowline altitude (SLA) at the end of the melt season can reflect variations in the glacier mass balance. Therefore, it is extremely crucial to investigate the changes of … WebJan 30, 2024 · Most air plants can be successfully watered using a soaking method, where the plant is left to soak in a bowl of distilled water for 20 to 40 minutes every 1 to 2 … thai spice savage
Anthropogenic Impacts on Atmospheric Carbonyl Sulfide …
WebAug 4, 2024 · The firn air samples were analyzed for H 2 at NOAA/GML using gas chromatography with a mercuric oxide reduction gas analyzer (HgO-RGA). Relative measurement uncertainty is estimated at ±2%. The H 2 measurements are reported as dry air mole fraction (ppb=nmol H 2 mol-1 air). The measurements were corrected for … Web1. Introduction. When polar firn transforms into ice, i.e. loss of permeability, the surrounding atmospheric gases are trapped in the ice matrix as air bubbles (e.g. Cuffey and Paterson, Reference Cuffey and Paterson 2010).In the depths of inland ice sheets, air bubbles crystallize into air clathrate hydrates (Shoji and Langway, Reference Shoji and Langway … WebJul 15, 2024 · Present and future variations in Antarctic firn air content. Abstract. A firn densification model (FDM) is used to assess spatial and temporal (1979–2200) variations in the depth, density and temperature of the firn layer covering the Antarctic ice sheet (AIS). A time-dependent version of the FDM is compared to more commonly used steady-state ... synonym for to ignore