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High Resolution Dynamics Limb Sounder

HIRDLS Data Products

The current HIRDLS data products (version 006) are described in the HIRDLS V6 Data Description and Quality Document (pdf) and summarized in the tables below:

Level 2 Products

Product Field Name Useful Range Estimated Accuracy Contact Name Contact Email
Temperature Temperature 1000 - 0.01 hPa* ± 2 K John Gille gille@ucar.edu
O3 O3 422 - 0.1 hPa † 1-10% <100ppbv UTLS Bruno Nardi nardi@ucar.edu
HNO3 HNO3 215 - 7.5 hPa † 5% to >25% Bruno Nardi nardi@ucar.edu
Cloud top pressure CloudTopPressure 422 - 10 hPa ± 20% Steven Massie massie@ucar.edu
12.1 Micron Extinction 12.1MicronExtinction 215 - 20 hPa
Steven Massie massie@ucar.edu
CFC 11 CFC11 316 - 26.1 hPa † 10% to >15% Bruno Nardi nardi@ucar.edu
CFC 12 CFC12 316 - 10.0 hPa † 10% to >25% Bruno Nardi nardi@ucar.edu
GPH GPH 1000 - 0.01 hPa* 2% Lesley Smith lsmith@ucar.edu

Level 3 Products

Product Field Name Useful Range Estimated Accuracy Contact Name Contact Email
Zonal Mean NO2 (day) NO2Day 56.2 - 1.0 hPa † ~10-30% Maria Rivas rivasm@ucar.edu
Zonal Mean NO2 (night) NO2Night 56.2 - 0.75 hPa † ~10-30% Maria Rivas rivasm@ucar.edu
Zonal Mean N2O5 (night) N2O5Night 56.2 - 5.1 hPa † ~10-30% Maria Rivas rivasm@ucar.edu
Stratospheric Column Daytime NO2 NO2DayColumn N/A † ~10-30% Maria Rivas rivasm@ucar.edu

Software

Product Field Name Useful Range Estimated Accuracy Contact Name Contact Email
HDF5, HDF-EOS5 Library Installation

GSFC DAAC Help-disc@listserv.gsfc.nasa.gov
HDF-EOS5 Reading HIRDLS Data

Vince Dean vdean@ucar.edu

* A priori >383 hPa
† Varies with latitude and altitude.


Reading HIRDLS Data

The HIRDLS data products are written in HDF-EOS5 format. For assistance installing the libraries, contact the Goddard Earth Sciences Data and Information Center or the HDF-EOS Tools and Information Center .

For assistance reading the HIRDLS file format, contact Vince Dean.

HIRDLS Data Versions

Data Version V006

Documentation
  • Data Description Version 006 pdf
  • Description of HIRDLS Predicted Precision Data
Data Processing
  • HIRDLS IDs 6.00.00 and 6.00.10
  • New level 3 products:
    • daily zonal means of daytime and nighttime NO2
    • daily zonal means of nighttime N2O5
    • daily grids of daytime stratospheric columns of NO2
    • monthly mean cirrus Ice Water Content (a joint HIRDLS/MLS product)

Data Version V005

Documentation
  • Data Description and Quality, Version 005 pdf
  • Description of HIRDLS Predicted Precision Data pdf
Data Processing
  • HIRDLS ID 5.00.00
  • Major change is addition of Geopotential Height (GPH) as new product.

Data Version V004

Documentation
  • Data Description and Quality, Version 004 pdf
Data Processing
  • HIRDLS ID 2.04.19
  • Major changes are addition of new products CFC11, CFC12, and 12.1 Micron Aerosol Extinction.

Data Version V003

Documentation
  • Data Description and Quality, Version 003 pdf
  • A Short Guide to the use and interpretation of V003 pdf
Data Processing
  • HIRDLS ID 2.04.09
  • Major changes are modifications to include more precise geolocation, updated cloud detection, updated calibration constants, and bug fixes.

Data Version V002

Data Processing
  • HIRDLS ID 2.02.07
  • Major changes are modifications to process Scan Tables 30, 13, 22 and 23.

Data Version V001

Data Processing
  • HIRDLS ID 2.01
  • Initial data release.