This paper describes the contents of the 2016 edition of the HITRAN molecular spectroscopic compilation. The new edition replaces the previous HITRAN edition of 2012 and its updates during the intervening years. The HITRAN molecular absorption compilation is composed of five major components: the traditional line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, infrared absorption cross-sections for molecules not yet amenable to representation in a line-by-line form, collision-induced absorption data, aerosol indices of refraction, and general tables such as partition sums that apply globally to the data. The new HITRAN is greatly extended in terms of accuracy, spectral coverage, additional absorption phenomena, added line-shape formalisms, and validity. Moreover, molecules, isotopologues, and perturbing gases have been added that address the issues of atmospheres beyond the Earth. Of considerable note, experimental IR cross-sections for almost 300 additional molecules important in different areas of atmospheric science have been added to the database. The compilation can be accessed through www.hitran.org. Most of the HITRAN data have now been cast into an underlying relational database structure that offers many advantages over the long-standing sequential text-based structure. The new structure empowers the user in many ways. It enables the incorporation of an extended set of fundamental parameters per transition, sophisticated line-shape formalisms, easy user-defined output formats, and very convenient searching, filtering, and plotting of data. A powerful application programming interface making use of structured query language (SQL) features for higher-level applications of HITRAN is also provided.

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The HITRAN 2008 molecular spectroscopic database

Cause, conseguenze e strategie di mitigazione Proponiamo il primo di una serie di articoli in cui affronteremo l’attuale problema dei mutamenti climatici. Presentiamo il documento redatto, votato e pubblicato dall’Ipcc - Comitato intergovernativo sui cambiamenti climatici - che illustra la sintesi delle ricerche svolte su questo tema rilevante.

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Climate Change 2007: The Physical Science Basis.

This chapter should be cited as: Myhre, G., D. Shindell, F.-M. Bréon, W. Collins, J. Fuglestvedt, J. Huang, D. Koch, J.-F. Lamarque, D. Lee, B. Mendoza, T. Nakajima, A. Robock, G. Stephens, T. Takemura and H. Zhang, 2013: Anthropogenic and Natural Radiative Forcing. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA. Coordinating Lead Authors: Gunnar Myhre (Norway), Drew Shindell (USA)

Anthropogenic and Natural Radiative Forcing

http://joenschem.com/yahoo_site_admin/assets/docs/atkinson2000r.93190106.pdf

Atmospheric chemistry of VOCs and NOx

Atmospheric degradation of volatile organic compounds

Kinetics of the reaction oh + so2 + m → hoso2 + m. temperature and pressure dependence in the fall-off region

The rate coefficient for the reaction OH + CF3CH2CF3 (1,1,1,3,3,3-hexafluoropropane, HFC236fa) was measured between 269 and 413 K using the pulsed photolysis-laser induced fluorescence technique to be k1 = (1.60 ± 0.40) × 10−12 exp (−(2450 ± 150)/T) cm3 molecule−1 s−1. The rate coefficient, k2b, for the destruction of CF3CH2CF3 via reaction with O(1D) was measured to be (4.5 ± 1.9) × 10−12 cm3 molecule−1 s−1 using the laser photolysis-resonance fluorescence technique. From these data, along with previously published rate coefficients for OH reaction with HFC236ea, the atmospheric lifetimes of HFC236fa and HFC236ea were calculated to be 210 and 8.1 years, respectively. The room temperature infrared absorption cross sections for these two compounds were measured over the range 650 to 1350 cm−1. The global warming potentials (GWPs) of HFC236fa and HFC236ea, respectively, were calculated to be 5610 and 2200 for a 20-year horizon and 5160 and 220 for a 500-year horizon.

A. R. Ravishankara

Papers

Kinetics of the reaction oh + so2 + m → hoso2 + m. temperature and pressure dependence in the fall-off region

Atmospheric fate and greenhouse warming potentials of HFC 236fa and HFC 236ea

Rate Coefficients for Reactions of Several Hydrofluorocarbons with OH and O(1D) and Their Atmospheric Lifetimes

Temperature Dependent Rate Coefficient of the Cl+ClNO2 Reaction,

Oxidation of CS2 by Reaction with OH. Part 2. Yields of HO2 and SO2 in Oxygen.