Validation of the Aura Microwave Limb Sounder HNO3 Measurements
Artikel i vetenskaplig tidskrift, 2007

[1] We assess the quality of the version 2.2 (v2.2) HNO(3) measurements from the Microwave Limb Sounder (MLS) on the Earth Observing System Aura satellite. The MLS HNO(3) product has been greatly improved over that in the previous version (v1.5), with smoother profiles, much more realistic behavior at the lowest retrieval levels, and correction of a high bias caused by an error in one of the spectroscopy files used in v1.5 processing. The v2.2 HNO(3) data are scientifically useful over the range 215 to 3.2 hPa, with single-profile precision of similar to 0.7 ppbv throughout. Vertical resolution is 3-4 km in the upper troposphere and lower stratosphere, degrading to similar to 5 km in the middle and upper stratosphere. The impact of various sources of systematic uncertainty has been quantified through a comprehensive set of retrieval simulations. In aggregate, systematic uncertainties are estimated to induce in the v2.2 HNO(3) measurements biases that vary with altitude between +/- 0.5 and +/- 2 ppbv and multiplicative errors of +/- 5-15% throughout the stratosphere, rising to similar to +/- 30% at 215 hPa. Consistent with this uncertainty analysis, comparisons with correlative data sets show that relative to HNO(3) measurements from ground- based, balloon- borne, and satellite instruments operating in both the infrared and microwave regions of the spectrum, MLS v2.2 HNO(3) mixing ratios are uniformly low by 10-30% throughout most of the stratosphere. Comparisons with in situ measurements made from the DC-8 and WB-57 aircraft in the upper troposphere and lowermost stratosphere indicate that the MLS HNO(3) values are low in this region as well, but are useful for scientific studies (with appropriate averaging).

Författare

M.L. Santee

Jet Propulsion Laboratory, California Institute of Technology

A. Lambert

Jet Propulsion Laboratory, California Institute of Technology

W.G. Read

Jet Propulsion Laboratory, California Institute of Technology

N.J. Livesey

Jet Propulsion Laboratory, California Institute of Technology

R.E. Coeld

Jet Propulsion Laboratory, California Institute of Technology

D.T. Cuddy

Jet Propulsion Laboratory, California Institute of Technology

W.H. Daffer

Jet Propulsion Laboratory, California Institute of Technology

B.J. Drouin

Jet Propulsion Laboratory, California Institute of Technology

L. Froidevaux

Jet Propulsion Laboratory, California Institute of Technology

R.A. Fuller

Jet Propulsion Laboratory, California Institute of Technology

R.F. Jarnot

Jet Propulsion Laboratory, California Institute of Technology

B.W. Knosp

Jet Propulsion Laboratory, California Institute of Technology

G.L. Manney

Jet Propulsion Laboratory, California Institute of Technology

New Mexico Institute of Mining and Technology

V.S. Perun

Jet Propulsion Laboratory, California Institute of Technology

W.V. Snyder

Jet Propulsion Laboratory, California Institute of Technology

P.C. Stek

Jet Propulsion Laboratory, California Institute of Technology

R.P. Thurstans

Jet Propulsion Laboratory, California Institute of Technology

P.A. Wagner

Jet Propulsion Laboratory, California Institute of Technology

J.W. Waters

Jet Propulsion Laboratory, California Institute of Technology

G. Muscari

Istituto Nazionale di Geofisica e Vulcanologia

R.L. de Zafra

Stony Brook University

J.E. Dibb

University of New Hampshire

D.W. Fahey

National Oceanic and Atmospheric Administration

P.J. Popp

National Oceanic and Atmospheric Administration

University of Colorado at Boulder

T.P. Marcy

National Oceanic and Atmospheric Administration

University of Colorado at Boulder

K.W. Jucks

Harvard-Smithsonian Center for Astrophysics

G.C. Toon

Jet Propulsion Laboratory, California Institute of Technology

R.A. Stachnik

Jet Propulsion Laboratory, California Institute of Technology

P.F. Bernath

University of York

University of Waterloo

C.D. Boone

University of Waterloo

K.A. Walker

University of Toronto

University of Waterloo

Joachim Urban

Chalmers, Institutionen för radio- och rymdvetenskap, Global miljömätteknik

Donal Murtagh

Chalmers, Institutionen för radio- och rymdvetenskap, Global miljömätteknik

Journal of Geophysical Research

0148-0227 (ISSN)

Vol. 112 D24

Ämneskategorier

Meteorologi och atmosfärforskning

DOI

10.1029/2007JD008721

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Senast uppdaterat

2018-05-18