FIRE Level 4
Entry Title: First ISCCP Regional Experiment (FIRE) Atlantic Stratocumulus Transition Experiment (ASxTEX) ECMWF Basic Fields Data

Entry ID: FIRE_AX_ECMWF_BASIC_1
Aerosols Clouds Radiation Budget Field Campaigns
Description

A special set of analysis products for the Atlantic Stratocumulus Transition Experiment (ASTEX) region during June 1-28, 1992 was prepared by Ernst Klinker and Tony Hollingsworth of the European Centre for Medium-range Forecasting (ECMWF), and reformatted by Chris Bretherton of Univ. of Washington. These analyses, or more correctly initializations and very short range forecasts using the ECMWF T213L30 operational model, incorporate routine observations from the global network and special soundings from ASTEX that were sent to ECMWFduring ASTEX via the GTS telecommunication system. About 650 special soundings were incorporated, including nearly all soundings from Santa Maria, Porto Santo, and the French ship Le Suroit, most of the soundings taken on the Valdivia and Malcolm Baldridge, and almost none of the soundings from the Oceanus. Surface reports from the research ships were also incorporated into the analyses after the first week of the experiment. Aircraft soundings were not included in the analyses. ECMWF has requested that anyone making use of this data set acknowledge them, and that those investigators publishing researchthat makes more than casual use of this data set contact Ernst Klinker or Tony Hollingsworth.The data have been decoded by Chris Bretherton into ASCII files, one for each horizontal field at a given level and base time. All data have the same horizontal resolution of 1.25 degrees in latitude and longitude and correspond to base (initialization) times of 00, 06, 12, or 18Z. Different fields have different lat/lon ranges and sets of available vertical levels, as tabulated below. Also, some fields are instantaneous (I) while others are accumulated (A) over the first 6 hours of a forecast initialized at the base time. This is tabulated in the 'time range' column below. Instantaneous fields are bestcompared with data at the base time, while accumulated fields are best compared with data three hours after the base time.Data Set Name ECMWF ECMWF Time Field Units Field ID# range Abbrev.------------- ------ ----- ----- ----- -----BASIC Z 129 I Geopotential m^2/s^2 T 130 I Temperature K Q 133 I Specific humidity kg/kg U 131 I U[ eastward]-velocity m/s V 132 I V[northward]-velocity m/s W 135 I Vertical velocity Pa/s(lat/lon range: 85W to 15E, 70N to 10N)(levels: 1010,1000,975,950,925,900,875,850,825,800,775,750,700,650,600,550,500,400,300,200,100 hPa)The ECMWF field abbreviation, ID#, field description and units are taken directly from ECMWF Code Table 2, in case you ever need to consult with ECMWF about this data set.

DOI

10.5067/ASDC_DAAC/FIRE/0023

Citation Styles for this Dataset
Keywords

From GCMD Science Keywords:
  • GEOPOTENTIAL HEIGHT
  • SURFACE WINDS
  • VERTICAL WIND VELOCITY/SPEED > WIND DYNAMICS
  • AIR TEMPERATURE > SURFACE TEMPERATURE
  • HUMIDITY > WATER VAPOR INDICATORS
  • WATER VAPOR > WATER VAPOR INDICATORS
  • Dew Point
  • Geopotential Height
  • Specific Humidity
  • Temperature
  • Vertical Velocity
  • Wind Speed
Data Distribution

File Format(s):

ASCII

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Spatial Information

spatial-coverage-map
Spatial Coverage: (S: 10, N: 70), (W: -85, E: 15)
Spatial Coverage Type: Horizontal
Coordinate System: Geodetic
Granule Spatial Representation: Geodetic
Locations

ATLANTIC OCEAN NORTH ATLANTIC OCEAN EQUATORIAL MID-LATITUDE POLAR BOUNDARY LAYER TROPOSPHERE AZORES OCEAN
Temporal Information

Temporal Coverage: 1992-06-01 - 1992-06-28
Temporal Resolution: 6 Hours
Platforms

Models/Analyses
Models/Analyses
Instruments not applicable.
Metadata Dates

Created on 2000-03-16
Last updated on 2022-10-31