Identification

Title

Case Studies on Convective Storms / Case Study 6, 25 July 1976: Dynamical-microphysical Evolution of a Convective Storm

Abstract

On 25 July 1976 the life cycle of a small, moderate thunderstorm which occurred in northeast Colorado was observed extensively by participants in the National Hail Research Experiment. This storm is the subject of a series of four papers. Studies of the storm environment showed that the storm grew in a weakly sheared environment (2x 10 ����� s �����) with instability of 3 to 4��K. The storm moved toward 200�� at 9 m s ����� and overtook low-level air, so that the relative inflow to the storm was from the southwest, resulting in new growth and updrafts at cloud base in that region. Radar observations show that the storm formed along a confluence line in a region of isolated convergence. The storm was multicellular in nature with new cells forming rather close (2-4 km) to the main radar echo. Although individual radar cells could be identified during the early stages of the storm, as the storm became more vigorous the reflectivity structure had a quasi-steady state appearance with the main reflectivity region in the southwestern portion of the storm. An unusual feature of this storm was the appearance of successively greater reflectivity values almost simultaneously over a large altitude interval. Observations near cloud base by the NCAR Queen Airs show peak updrafts of 3-4 m s ����� and downdrafts of only 1-2 m s �����. Relatively little variation in equivalent potential temperature was observed. Apparently the storm did not form an organized downdraft which extended below cloud base.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7r210sb

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD DYNAMICS

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS

EARTH SCIENCE > ATMOSPHERE > CLOUDS > CONVECTIVE CLOUDS/SYSTEMS (OBSERVED/ANALYZED) > PRECIPITATING CONVECTIVE CLOUD SYSTEMS

originating controlled vocabulary

title

reference date

date type

revision

effective date

2021-09-17

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

1980-01-01T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata date

2023-08-18T18:03:17.768470

Metadata language