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ATOVS Sounding Products

The Advanced TIROS Operational Vertical Sounder (ATOVS) consists of High Resolution Infrared Radiation Sounder (HIRS), the Advanced Microwave Sounding Unit-A (AMSU-A) and AMSU-B for retrieving temperature, humidity and ozone sounding in all weather conditions. The Microwave Humidity Sounder (MHS), developed by EUMETSAT, replaced AMSU-B on NOAA-18, NOAA-19, and the European MetOp satellites. Currently the ATOVS is generating products from the NOAA-15, NOAA-18, NOAA-19, and MetOp-2. This instrument package provides information on temperature and humidity profiles, total ozone, clouds and radiation on a global scale to the operational user community.




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Retrieval Orbital Data File (RODF)

  NOAA-15 NOAA-18 NOAA-19 METOP-2
Retrieval Temperatures 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Retrieval Water Vapor Mixing Ratio 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Layer Precipitable Water 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Layer Mean Virtual Temperature 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Layer Thickness 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Retrieved Parameters 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Cloud Parameters **** **** **** **** 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Geopotential heights 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z


AMSU Orbital Data File (AODF)

  NOAA-15 NOAA-18 NOAA-19 METOP-2
Brightness Temperatures 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z
Retrieval Parameters 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z




HIRS Orbital Data File (HODF)

  NOAA-15 NOAA-18 NOAA-19 METOP-2
Brightness Temperatures **** **** **** **** 0 - 12 Z 12 - 24 Z 0 - 12 Z 12 - 24 Z


NOTE: Stars indicate where product no longer exists due to the HiIRS failure on NOAA-18

There are two time periods available for each group of data:

  • Time period 1 covers from 00z to 12z of the current day.
  • Time period 2 covers from 12z to 24z of the current day.

The data are separated into the following groups:

    RODF

  • Retrieval Temperature - 40 levels of retrieved temperatures from 0.1 mb down to 1000 mb.
  • Water Vapor Mixing Ratio - 17 levels of retrieved water vapor mixing ratios from 200 mb down to 1000 mb.
  • Layer Precipitable Water - 15 layers of precipitable warer measured from 7-10 mb to 850-1000 mb.
  • Layer Mean Virtual Temperature - 15 layers of mean virtual temperature measured from 7-10 mb to 850-1000 mb.
  • Layer Thickness - 20 layers of Thickness measured from 7-10 mb to 1012-1013 mb.
  • Retrieval parameters - 10 different retrieval parameters measured under RODF.
  • Cloud Parameters - 5 different cloud parameters measured under RODF.
  • Geopotential Height - 38 levels of geopotential heights from 0.1 mb down to 920 mb.

    • AODF

  • LIMB-COR AMSU Brightness Temperature - 15 Channels of brightness temperatures.
  • Retrieval Parameters - 8 different retrieval parameters measured under AODF.

    • HODF

  • LIMB Adjusted HIRS Brightness Temperature - 19 channels of brightness Temperatures.



Disclaimer for Experimental Satellite Products

Data and imagery displayed on these pages are not official NOAA or NESDIS operational products and are provided only for the purposes of demonstrative and experimental use by qualified remote sensing researchers or experienced meteorologists and oceanographers. Although we provide "operational" data streams for some of these products, the Internet is not considered to be an operational means of dissemination. Therefore, this service may be interrupted or canceled at any time without notice. Anyone is free to use the images or information as they wish, as long as credit is given to the NOAA/NESDIS Office of Satellite Data Proces sing and Distribution (OSDPD) Center.

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