Identification

Title

The National Hail Research Experiment Report on the Alberta Hail Project

Abstract

The Alberta Hail Project conducts airborne silver iodide seeding to test hail suppression in an 1800 square mile target which experiences 55-65 hail days annually. Randomization by days occurs in the northern half of the target, with the exception of some south-moving storms. Full operational seeding is conducted in the southern half. Seeding on top (at about -14C) with droppable flares and at cloud base with fusees is executed by a maximum of seven aircraft, one of which is instrumented for cloud physics. The seed criterion is an echo intensity of 35 dBZ in or approaching the target. Present findings suggest (from radar and photography) a gradual transition between multicell and supercell storms. Tracer results suggest on top seeding may be more effective in silver iodide distribution in the storm.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7k073p8

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 > CLOUDS > CONVECTIVE CLOUDS/SYSTEMS (OBSERVED/ANALYZED) > PRECIPITATING CONVECTIVE CLOUD SYSTEMS

EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SOLID PRECIPITATION > HAIL

EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > HAIL STORMS

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

1976-01-01T00:00:00Z

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

2023-08-18T18:05:23.971549

Metadata language