[Location: Location_Category='VERTICAL LOCATION', Location_Type='MESOSPHERE']
MLS/Aura L2 Hydrogen Chloride (HCl) Mixing Ratio V003 ML2HCL at GES DISCEntry ID: GES_DISC_ML2HCL_V003
Abstract: ML2HCL is the EOS Aura Microwave Limb Sounder (MLS) standard product for hydrogen chloride derived from radiances measured primarily by the 640 GHz radiometer. The current version is 3.3. Spatial coverage is near-global (-82 ¬∞ to +82 ¬∞ latitude), with each profile spaced 1.5 ¬∞ or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is from 100 to ... 0.316 hPa, and the vertical resolution is between 3 and 6 km. Users of the ML2HCL data product should read section 3.9 of the EOS MLS Level 2 Version 3.3 Quality Document for more information (http://mls.jpl.nasa.gov/data/v3-3_data_quality_document.pdf).
Users are encouraged to register with the MLS science team at https://mls.jpl.nasa.gov/forms/reguser.php to obtain updates and information about this data product.
The data are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5), which is based on the version 5 Hierarchical Data Format, or HDF5. Each file contains two swath objects (one with profile data, the other with column data), each with a set of data and geolocation fields, swath attributes, and metadata. The data fields include the geophysical parameter values and precision (standard deviation), convergence values, data quality, and a status flag. The geolocation fields include a time stamp in TAI-93 format (seconds since January 1, 1993), geodetic latitude and longitude, and pressure level values, as well as local solar time, solar zenith angle, line of sight angle, and orbit geodetic angle. There is one file per day.
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey (National Water Quality Assessment Program)
Dataset Title: Surface-water Quality Assessment of the Yakima River Basin in Washington:Chemical Analyses of Major, Minor and Trace Elements in Fine-Grained Sediment.
Dataset Release Date: unknown
Dataset Release Place: Seattle, Washington
Dataset Publisher: U.S. Environmental Protection Agency, Region 10
Data Presentation Form: databaseOnline Resource: http://www.epa.gov/r10earth/data/crbdata.html?dioxin+#first_hit
Start Date: 1987-08-01Stop Date: 1987-09-30
Quality Quality assurance was evaluated by including standard reference
materials, random split samples, and laboratory duplicates. Quality
assessment procedures and results for analytical precision and
accuracy for the four NAWQA pilot studies are presented by Sanzolone
and Ryder (1989). The laboratory data were reviewed and data
... qualifiers were added as appropriate. The data qualifiers used were
defined as follows: Insufficient sample for analysis; H -
Interference; U - Concentration is less than value shown. Users of
these data should be reminded that the results are for specific grain
size fractions which can not be compared directly to results from bulk
sediment analyses. All data entered in the database were reviewed for
data entry errors. All detected errors were corrected.
All samples were collected within the Yakima River Basin. Samples were
collected randomly from 269 lower-order streambed sites, 75 samples
were collected from higher-order streambed sites, and the remaining
samples represent storm water urban drains, soils, and analysis of
Access Constraints None
Use Constraints None
Data Set Progress
Role: TECHNICAL CONTACT
Phone: (970) 226-9488
Fax: (970) 226-9230
Email: patrick_anderson at usgs.gov
U.S. Geological Survey Biological Resources Division, Midcontinent Ecological Science Center
City: Fort Collins
Province or State: Colorado
Postal Code: 80525
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Arbogast, B.F. 1990. Quality assurance manual for the Branch of
Geochemistry. U.S. Geological Survey. U.S. Geological Survey
Open-File Report 90-668.
Ryder, J.L., R.F. Sanzolone, G.J. Fuhrer, and E.L. Mosier. 1992.
Surface-water-quality assessment of the Yakima River basin in
Washington: Chemical analyses of major, minor, and trace elements in
fine-grained sediment. U.S. Department of the Interior,
U.S. Geological Survey. Open-File Report 92-520.
Sanzolone, R.F., and J.L. Ryder. 1989. Quality assessment program
and results for the NAWQA surface water pilot studies.
U.S. Geological Survey Open-File Report 89-658.
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date: 2001-05-27
Last DIF Revision Date: 2012-12-12
Future DIF Review Date: 2002-05-27