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ASOS Surface 5-Minute Data (DSI-6401, DSI-6401b)

Entry ID: gov.noaa.ncdc.C00418

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Summary

Abstract: ASOS Surface 5-Minute Data is digital data set DSI-6401 and DSI-6401b archived at the National Climatic Data Center (NCDC).The National Weather Service (NWS) describes ASOS this way: "The Automated Surface Observing Systems (ASOS) program is a joint effort of the National Weather Service (NWS), the Federal Aviation Administration (FAA), and the Department of Defense (DOD). The ASOS system serves ... as the nations primary surface weather observing network. ASOS is designed to support weather forecast activities and aviation operations and, at the same time, support the needs of the meteorological, hydrological, and climatological research communities. With the largest and most modern complement of weather sensors, ASOS has significantly expanded the information available to forecasters and the aviation community. The ASOS network has more than doubled the number of full-time surface weather observing locations. ASOS works non-stop, updating observations every minute, 24 hours a day, every day of the year. Getting more information on the atmosphere, more frequently and from more locations is the key to improving forecasts and warnings. Thus, ASOS information will help the NWS to increase the accuracy and timeliness of its forecasts and warnings--the overriding goal of the NWS modernization. The primary concern of the aviation community is safety, and weather conditions often threaten that safety. A basic strength of ASOS is that critical aviation weather parameters are measured where they are needed most: airport runway touchdown zone(s). ASOS detects significant changes, disseminating hourly and special observations via the networks. Additionally, ASOS routinely and automatically provides computer-generated voice observations directly to aircraft in the vicinity of airports, using FAA ground-to-air radio. These messages are also available via a telephone dial-in port. ASOS observes, formats, archives and transmits observations automatically. ASOS transmits a special report when conditions exceed preselected weather element thresholds, e.g., the visibility decreases to less than 3 miles. Reports basic weather elements: Sky condition: cloud height and amount (clear, scattered, broken, overcast) up to 12,000 feet; Visibility (to at least 10 statute miles); Basic present weather information: type and intensity for rain, snow, and freezing rain; Obstructions to vision: fog, haze; Pressure: sea-level pressure, altimeter setting; Ambient temperature, dew point temperature; Wind: direction, speed and character (gusts, squalls); Precipitation accumulation; Selected significant remarks including- variable cloud height, variable visibility, precipitation beginning/ending times, rapid pressure changes, pressure change tendency, wind shift, peak wind. DSI-6401 and DSI-6401b both contain data from stations in the United States of America including Alaska and Hawaii, and Puerto Rico. The earliest data available is July 1996. There are actually two archived data sets that differ somewhat in archival format: DSI-6401 and DSI-6401b. The former is data archived through July 1998; the latter is data after July 1998.

Purpose: To make a wide range of climatic data available to researchers and the public.

SUPPLEMENTAL INFORMATION: data set

CURRENTNESS REFERENCE: Ground Condition

Related URL

Link: VIEW EXTENDED METADATA

Description: View Source Metadata document from the Metadata Manager and Repository (NMMR).

Link: VIEW RELATED INFORMATION

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 72.0

S: 15.0

E: -60.0

W: 170.0

Data Set Citation

Dataset Originator/Creator: National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce

Dataset Title: ASOS Surface 5-Minute Data (DSI-6401, DSI-6401b)

Dataset Release Date: Unknown

Data Presentation Form: tabular digital data

Online Resource: http://205.156.54.206/asos/

Temporal Coverage

Start Date: 1996-07-01

Location Keywords

OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA

Data Resolution

Temporal Resolution: 5 Minute
Temporal Resolution Range: 1 minute - < 1 hour

Science Keywords

ATMOSPHERE > AIR QUALITY > TURBIDITY

ATMOSPHERE > AIR QUALITY > VISIBILITY

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

ASOS > Automated Surface Observing System

Instrument

AEROVANES

ANEMOMETERS

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

AQUA > Earth Observing System (EOS), AQUA

OPENDAP > Open-source Project for a Network Data Access Protocol

Quality /V5_CalVal_Status_Summary.pdf
http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Re...

Access Constraints Data are expected to be available from the GSFC Earth Sciences (GES) Distributed Active Archive Center (DAAC) about one year after launch. The DAAC Science Team will provide regular updates regarding data product releases in the future.

Ancillary Keywords

Dust Flag

Dust Score

Data Set Progress

IN WORK

Originating Center

GES DAAC

Data Center

Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP Phone: 301-614-5224 Fax: 301-614-5268 Email: gsfc-help-disc at lists.nasa.gov Contact Address: Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA