Validation of the Aura Microwave Limb Sounder middle atmosphere water vapor and nitrous oxide measurements
Artikel i vetenskaplig tidskrift, 2007

The quality of the version 2.2 (v2.2) middle atmosphere water vapor and nitrous oxide measurements from the Microwave Limb Sounder (MLS) on the Earth Observing System (EOS) Aura satellite is assessed. The impacts of the various sources of systematic error are estimated by a comprehensive set of retrieval simulations. Comparisons with correlative data sets from ground-based, balloon and satellite platforms operating in the UV/ visible, infrared and microwave regions of the spectrum are performed. Precision estimates are also validated, and recommendations are given on the data usage. The v2.2 H < inf > 2 < /inf > O data have been improved over v1.5 by providing higher vertical resolution in the lower stratosphere and better precision above the stratopause. The single-profile precision is ∼0.2-0.3 ppmv (4-9%), and the vertical resolution is ∼3-4 km in the stratosphere. The precision and vertical resolution become worse with increasing height above the stratopause. Over the pressure range 0.1-0.01 hPa the precision degrades from 0.4 to 1.1 ppmv (6-34%), and the vertical resolution degrades to ∼12-16 km. The accuracy is estimated to be 0.2-0.5 ppmv (4-11%) for the pressure range 68-0.01 hPa. The scientifically useful range of the H < inf > 2 < /inf > O data is from 316 to 0.002 hPa, although only the 82-0.002 hPa pressure range is validated here. Substantial improvement has been achieved in the v2.2 N < inf > 2 < /inf > O data over v1.5 by reducing a significant low bias in the stratosphere and eliminating unrealistically high biased mixing ratios in the polar regions. The single-profile precision is ∼13-25 ppbv (7-38%), the vertical resolution is ∼4-6 km and the accuracy is estimated to be 3-70 ppbv (9-25%) for the pressure range 100-4.6 hPa. The scientifically useful range of the N < inf > 2 < /inf > O data is from 100 to 1 hPa. Copyright 2007 by the American Geophysical Union.

Författare

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

M.L. Santee

Jet Propulsion Laboratory, California Institute of Technology

G.L. Manney

Jet Propulsion Laboratory, California Institute of Technology

New Mexico Institute of Mining and Technology

L. Froidevaux

Jet Propulsion Laboratory, California Institute of Technology

D.L. Wu

Jet Propulsion Laboratory, California Institute of Technology

M.J. Schwartz

Jet Propulsion Laboratory, California Institute of Technology

H.C. Pumphrey

University of Edinburgh

C. Jimenez

University of Edinburgh

G.E. Nedoluha

Naval Research Laboratory

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

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

H.M. Pickett

Jet Propulsion Laboratory, California Institute of 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

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 Waterloo

University of York

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

J.W. Elkins

National Oceanic and Atmospheric Administration

E. Atlas

University of Miami

Journal of Geophysical Research

0148-0227 (ISSN)

Vol. 112 D24

Ämneskategorier

Meteorologi och atmosfärforskning

Geovetenskap och miljövetenskap

DOI

10.1029/2007JD008724