Scientific Commons: J. J. Margitan

Observed and modeled HOCl profiles in the midlatitude stratosphere : implication for ozone loss (2008)

Kovalenko, L. J., Jucks, K. W., Salawitch, R. J., Toon, G. C., Blavier, J. F., Johnson, D. G., ...

Vertical profiles of stratospheric HOCl calculated with a diurnal steady-state photochemical model that uses currently recommended reaction rates and photolysis cross sections underestimate observed...

Measured and modeled HOCl profiles in the mid-latitude stratosphere : implication for ozone loss. (2006)

Kovalenko, L. J., Salawitch, R. J., Sen, B., Toon, G. C., Jucks, K. W., ...

The HOCl catalytic cycle is an efficient ozone loss mechanism in the lower mid-latitude stratosphere. We use a diurnal steady-state photochemical model to calculate profiles of HOCl for conditions...

Ozone Loss Inside the Northern Polar Vortex During the 1991-1992 Winter (2004)

Proffitt, M. H., Aikin, K., Margitan, J. J., Loewenstein, M., Podolske, J. R., Weaver, A., ...

Measurement made in the outer ring of the northern polar vortex from October 1991 through March 1992 reveal an altitude dependent change in ozone, with decrease at the bottom of the vortex and...

Stratospheric Ozone Intercomparison Campaign (STOIC) 1989: Overview (2004)

Margitan, J. J., Barnes, R. A., Brothers, G. B., Butler, J., Burris, J., Connor, B. J., ...

The NASA Upper Atmosphere Research Program organized a Stratospheric Ozone Intercomparison Campaign (STOIC) held in July-August 1989 at the Table Mountain Facility (TMF) of the Jet Propulsion...

Validation of UARS MLS Ozone Measurements (2004)

Froidevaux, L., Read, W. G., Lungu, T. A, Cofield, R. E., Fishbein, E. F., Flower, D. A., ...

This paper describes the validation of ozone data from the Upper Atmosphere Research Satellite (UARS) Microwave Limb Sounder (MLS). The MLS ozone retrievals are obtained from the calibrated microwave...

Measurement of Reactive Nitrogen in the Troposphere (2004)

Sen, B., Osterman, G. B., Toon, G. C., Salawitch, R. J., Margitan, J. J., ...

Measurements of Reactive Nitrogen in the Stratosphere (2004)

Toon, G. C., Sen, B., Osterman, G. B., Salawitch, R. J., Margitan, J. J., ...

Balloon-Borne Measurements of Stratospheric Radicals and their Precursors: Implications for the Production and Loss of Ozone (2004)

Osterman, G. B., Salawitch, R. J., Sen, B., Toon, G. C., Stachnik, R. A., Pickett, H. M., ...

An Examination of Inorganic Chlorine Partitioning using Balloon-Borne Measurements of Stratospheric Gases (2004)

Salawitch, R. J., Osterman, G. B., Sen, B., Toon, G. C., Margitan, J. J., Stachnik, R. A., ...

Balloon-Borne Measurements of Stratospheric Radicals and their Precursors: Implications for the Production and Loss of Ozone (2004)

Osterman, G. B., Salawitch, R. J., Sen, B., Stachnik, R. A., Pickett, H. M., Toon, G. C., ...

Measurements of hydrogen, nitrogen and chlorine radicals from a balloon flight on 25 September 1993 from Ft. Sumner, NM provide an opportunity to quantify photochemical production and loss of ozone....

A Comparison of Measurements from ATMOS and Instruments Aboard the ER-2 Aircraft: Halogenated Gases (2004)

Chang, A. Y., Salawitch, R. J., Michelsen, H. A., Gunson, M. R., Abrams, M. C., Zander, R., ...

We compare the mixing rations of N2O, CFC-11, CFC-12, CCI4, SF6, and HCI in the mid-latitude stratosphere measured by the ATMOS Fourier transform spectrometer with in situ measurements acquired...

Evolution of HCI Concentrations in the Lower Stratosphere from 1991 to 1996 Following the Eruption of Mt. Pinatubo (2004)

Webster, C. R., May, R. D., Michelsen, H. A., Scott, D. C., Wilson, J. C., Jonsson, H. H., ...

In situ measurements of hydrochloric acid (HCI) concentrations in the lower stratosphere from 1991 to 1996 reveal that its abundance relative to that of total inorganic chlorine (CIy) has evolved...

Measurement of Reactive Nitrogen in the Stratosphere (2004)

Sen, B., Toon, G. C., Osterman, G. B., Blavier, J. F., Margitan, J. J., Salawitch, R. J., ...

We present volume mixing ratio profiles of NO, NO2, HNO3, HNO4, N2O5, and CINO3 and their composite budget (NOy), from 20 to 39 km, meassured remotely in solar occultation by the JPL MkIV...

Growth of Lower Stratospheric HCl/Cly Since 1993: Observations from Aircraft (ALIAS), Balloon (MarkIV, FIRS-2), Space Shuttle (ATMOS), and Satellite (HALOE) Measurements (2004)

Webster, C. R., Michelsen, H. A., May, R. D., Scott, D. C., Herman, R. L., Margitan, J. J., ...

Measurements of HCl in the lower stratosphere (15-21 km) from aircraft, balloon, Space Shuttle, and satellite reveal a growth in its mean abundance relative to that of total inorganic chlorine (Cly)...

The Partitioning of NO***suby*** Species in the Summer Arctic Stratosphere (2004)

Osterman, G. B., Sen, B., Toon, G. C., Salawitch, R. J., Margitan, J. J., Blavier, J. F., ...

Volume mixing ratio profiles of the quantitatively significant NOy species NO, NO2, HNO3, HNO4, CINO3 and N2O5 were measured remotely form 8 to 38 km by the JPL MkIV FTIR solar absorption...

Tropical Entrainment Time Sclaes Inferred from Stratospheric N***sub2***0 and CH***sub4*** Observations (2004)

Herman, R. L., Scott, D. C., Webster, C. R., May, R. D., Moyer, E. J., Salawitch, R. J., ...

Simultaneous in situ measurements of the long-lived trace gases N***sub2***O and CH***sub4*** were made with a tunable diode laser spectrometer (ALIAS II) aboard the Observations from the Middle...

Measurements of CO in the Upper Troposphere and Lower Stratosphere (2004)

Herman, R. L., Webster, C. R., May, R. D., Scott, D. C., Hu, H., Moyer, E. J., ...

In situ measurements of CO were made in the upper troposphere and lower stratosphere (7 to 22 km altitude) with the JPL Aircraft Laser Infrared Absorption Spectrometer (ALIAS) on 58 flights of the...

Measurements of HNO***sub4***: implications for HO***subX*** (2004)

Salawitch, R. J., Sen, B., Toon, G. C., Wennberg, P. O., Osterman, G. B., Margitan, J. J.

Chemical depletion of Arctic ozone in winter 1999/2000 (2002)

Rex, M., Salawitch, R.J., Harris, N.R.P., Braathen, G.O., Schulz, A., Deckelmann, H., ...

Chemical loss of ozone during the Arctic winter of 1999/2000: An analysis based on balloon-borne observations (2002)

Salawitch, R. J., Margitan, J. J., Sen, B., Toon, G. C., Osterman, G. B., Rex, M., ...

Valdiation of ozone measurements from the Improved Limb Atmospheric Spectrometer (ILAS) (2002)

Sugita, T., Yokota, T., Nakajima, H., Kanzawa, H., Nakane, H., Gernandt, H., ...

Validation of Ozone Measurements from the Improved Limb Atmospheric Spectrometer (2002)

Sugita, T., Yokota, T., Nakajima, H., Kanzawa, H., Nakane, H., Gernandt, H., ...

Subsidence, mixing and denitrification of Arctic polar vortex air measured during POLARIS (1999)

Rex, M., Salawitch, R. J., Toon, G. C., Sen, B., Margitan, J. J., Osterman, G. B., ...