SCIENCE NEWSSCIENCE NEWS

Magnitude 6.3 - CENTRAL ITALYMagnitude 6.3 - CENTRAL ITALY

Types of Measured DataTypes of Measured Data

QualitativeQualitative : measurement : measurement expressed in terms of language expressed in terms of language description (Categorical data)description (Categorical data)

QuantitativeQuantitative : measurement : measurement expressed in terms of numbers expressed in terms of numbers (Scale Measurement)(Scale Measurement)

Meteorologist GoalMeteorologist Goal

AnalyzeAnalyze & & PredictPredict and and CreateCreate a descriptive picture of a descriptive picture of

weather based upon weather based upon accurate data & amount of accurate data & amount of

available dataavailable data

Meteorologist MeasureMeteorologist Measure

Atmosphere Conditions Atmosphere Conditions TemperatureTemperatureAir pressureAir pressureWind SpedWind SpedRelative HumidityRelative Humidity

Data CollectionData Collection

Near Surface Near Surface MeasurementMeasurement

& & Upper Atmosphere Upper Atmosphere

MeasurementMeasurement

Meteorologist ToolboxMeteorologist Toolbox

Near Surface MeasurementNear Surface Measurement

Thermometer Thermometer BarometerBarometerHygrometerHygrometerAnemometerAnemometer

Upper Atmosphere Upper Atmosphere MeasurementMeasurement

RadiosondeRadiosondeDoppler RadarDoppler RadarWeather SatellitesWeather Satellites

RadiosondeRadiosondeMeasurement of Air Measurement of Air Pressure, Temp, Wind Pressure, Temp, Wind Speed & HumiditySpeed & Humidity

Carried into the Carried into the atmosphere by balloons atmosphere by balloons

Ceiling about 30 kmCeiling about 30 km

Radiosonde Radiosonde

Doppler RadarDoppler Radar

Measurement of Wind Measurement of Wind speed & Precipitation speed & Precipitation

Based on Doppler Effect of Based on Doppler Effect of moving wavesmoving waves

SatellitesSatellites Main job to observe Main job to observe weatherweather

Worldwide viewWorldwide view3 types of Imagery3 types of Imagery

Infrared ImageryInfrared Imagery IR radiation emitted from IR radiation emitted from

oceans, land, clouds tops, oceans, land, clouds tops, snow/ice snow/ice

Shades of intensities (Colder Shades of intensities (Colder temps low IR, warmer temps temps low IR, warmer temps higher IR )higher IR )

Used to determine cloud’s Used to determine cloud’s temp, type & altitude temp, type & altitude

Highlight strong storms Highlight strong storms

IRIR

Visible LightVisible Light Light from the sun reflected by Light from the sun reflected by

oceans, land, cloud tops, snow/iceoceans, land, cloud tops, snow/ice Intensity depends on light striking Intensity depends on light striking

feature & feature’s reflectivity feature & feature’s reflectivity (snow & ice reflect best & oceans (snow & ice reflect best & oceans reflect least)reflect least)

Photograph of what you would Photograph of what you would see from space see from space

Tracks clouds Tracks clouds

Visible LightVisible Light

Water VaporWater VaporSenses IR wavelengths Senses IR wavelengths Points out regions of moist Points out regions of moist & dry air & dry air

Provides info about wind Provides info about wind patterns and jet streams patterns and jet streams (dark colors are dry air, (dark colors are dry air, brighter the white the more brighter the white the more moisture moisture

Water VaporWater Vapor

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