Identification

Title

Global observations of HNO₃ from the High Resolution Dynamics Limb Sounder (HIRDLS): First results

Abstract

We present the first evaluation of the HNO₃ data product (version 2.04.09) from the High Resolution Dynamics Limb Sounder (HIRDLS) on the Earth Observing System (EOS) Aura satellite. The HIRDLS instrument obtains between 5000 and 7000 HNO₃ profiles per day. HIRDLS HNO₃ data are generally good over the latitude range of 64°S to 80°N and pressure range 100 to 10 hPa, with some profiles, depending on latitude, having useful information between 100 to 161 hPa. The individual profile "measured" precision is between 10 and 15%, but can be much larger if the HNO₃ abundance is low or outside the 100 hPa to 10 hPa range. Global results are compared with the HNO₃ observations from version 2.2 of the EOS Aura Microwave Limb Sounder (MLS), and it is found that large-scale features are consistent between the two instruments. HIRDLS HNO₃ is biased 0-20% low relative to Aura MLS in the mid-to-high latitudes and biased high in the tropical stratosphere. HIRDLS HNO₃ is also compared with Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS). In these mostly high-latitude comparisons the HIRDLS HNO₃ data are biased 10-30% low, depending on altitude. Finally, the HIRDLS HNO₃ is compared to in situ data taken by the NOAA Chemical Ionization Mass Spectrometer (CIMS) instrument flown during the 2005 NASA Houston Aura Validation Experiment (AVE) and the ability of HIRDLS to measure HNO₃ in the UTLS region is examined.

Resource type

document

Resource locator

Unique resource identifier

code

https://n2t.org/ark:/85065/d7qv3mpt

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2008-07-03T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact