Erik Halvorsen

Telemark University College

Department of science education

erik.halvorsen@hit.no

Water data at the GLOBE server -experience from working with the

Water Cycle theme in the e-LSEE project

Introduction

The e-LSEE group in Norway has been working with Water as the main theme. One of the reasons for this is the strong position of water in the curriculum for science in Norway.

Another reason is the number of large floods in 2002.

Content:Water data at the GLOBE server

AtmosphereCloud observationRainfallSolid precipitationHumidity

Assessment of the dataExample: Water cycleTeacher student evaluation of water data

Surface WaterAssessment of the data and their usefulness

Floods in 2002

Water data at the GLOBE server – august 2002

Assessment of quality and usefulness of the data

• Rainfall– Monthly average calculations require

measurements in at least 20 days– Instruments are well designed.– My experience is that measurements are

reliable– But the number of schools that are measuring

rainfall is too small and scattered for more detailed investigations

Theme: Water cycle

Rainfall in september 2002

The connection between rainfall and flood investigated by GLOBE data

Results from teacher student evaluation

Are the data and/or visualisations in the theme clear?

Yes: 60 No: 30

Are the data and/or visualisations in the theme easy to interpret?

Yes: 85 No: 5

Results from teacher student evaluation

Are the data and/or visualisations in the theme relevant?

Yes: 60 No: 30

Is the theme linked to the school curricular?

Yes: 90 No: 0

Water data at the GLOBE server – Surface water conductivity

How many data are there?

Conclucions

• The number of schools that are measuring is too small• The measurements are too scattered for more detailed investigations• A few schools have excellent data series