Presentation is loading. Please wait.

Presentation is loading. Please wait.

IPC-XI Tutorial Pyrgeometer. Contents Pyrgeometer energy balance Equations for retrieving longwave irradiance Shaded versus unshaded pyrgeometers.

Published byMelissa Wilkinson Modified over 9 years ago

Similar presentations

Presentation on theme: "IPC-XI Tutorial Pyrgeometer. Contents Pyrgeometer energy balance Equations for retrieving longwave irradiance Shaded versus unshaded pyrgeometers."— Presentation transcript:

1 IPC-XI Tutorial Pyrgeometer

2 Contents Pyrgeometer energy balance Equations for retrieving longwave irradiance Shaded versus unshaded pyrgeometers

3 Pyrgeometer setup

4 Pyrgeometer energy balance Eppley PIR Kipp&Zonen CG4 5µm40µm20µm

5 Pyrgeometer energy balance Eppley PIR Kipp&Zonen CG4 Typical values: Net outgoing radiation ~ 100 Wm -2 PIR Dome (∆T=1K) ~18 Wm-2

6 Pyrgeometer equations Several choices for the radiometric model of a pyrgeometer: Simple Albrecht formula Extended Albrecht (PMOD) NREL formula Fit parameters

7 Calibration residuals versus WISG

8 Calibration residuals versus WISG results from 50 Instruments

9 Shaded versus unshaded Pyrgeometers

10 Shaded pyrgeometers

11 Unshaded pyrgeometers NIGHT 1 Dome YSI

12 Unshaded pyrgeometers NIGHT NIGHT and DAY

13 Unshaded pyrgeometers Proxy: direct solar irradiance 1 Dome YSI

14 Unshaded pyrgeometers Proxy: direct solar irradiance Proxy: Dome-body temperature 1 Dome YSI

15 Unshaded pyrgeometers PIR Dome proxy Direct irr proxy

16 Unshaded pyrgeometers PIR 3 Th. Dome proxy Direct irr proxy R=0.81 R=0.91 Effect is 6 W/m 2 per 1kW for this particular pyrgeometer 26955 3 dome

17 Unshaded pyrgeometers CG4 Effect is 5.5 W/m 2 per 1kW for this particular pyrgeometer cg4

18 Summary unshaded pyrgeometers InstrumentOffset per 1000 Wm -2 Direct irradiance PIR 3 Dome Thermistor7.0 PIR 3 Dome Th.6.2 PIR 3 Dome Th.6.8 PIR 3 Dome Th.7.4 PIR 1 Dome Th.11.2 PIR 1 Dome Th.15.3 PIR 1 Dome Th.11.5 PIR 1 Dome Th.4.0 PIR 1 Dome Th.8.5 PIR 1 Dome Th.11.4 PIR 1 Dome Th.4.6 InstrumentOffset per 1000 Wm -2 Direct irradiance CG42.6 CG45.4 CG43.1 CG4 CG45.3 CG45.5 CG113.4

19 Summary unshaded pyrgeometers InstrumentOffset per 1000 Wm -2 Direct irradiance PIR 3 Dome Thermistor7.0 PIR 3 Dome Th.6.2 PIR 3 Dome Th.6.8 PIR 3 Dome Th.7.4 PIR 1 Dome Th.11.2 PIR 1 Dome Th.15.3 PIR 1 Dome Th.11.5 PIR 1 Dome Th.4.0 PIR 1 Dome Th.8.5 PIR 1 Dome Th.11.4 PIR 1 Dome Th.4.6 InstrumentOffset per 1000 Wm -2 Direct irradiance CG42.6 CG45.4 CG43.1 CG4 CG45.3 CG45.5 CG113.4 Is there shortwave leakage in the solar blind filters?

20 IPC-XI Pyrgeometer intercomparison shaded unshaded Difference to WISG / Wm -2 PIR & CG4

21 IPC-XI Pyrgeometer intercomparison Difference to WISG / Wm -2 Only CG4

Download ppt "IPC-XI Tutorial Pyrgeometer. Contents Pyrgeometer energy balance Equations for retrieving longwave irradiance Shaded versus unshaded pyrgeometers."

Similar presentations

Solar Radiation Measurement Bruce W Forgan, WMO RAV Metrology Workshop, Melbourne, Novemberr 2011.

Solar Radiation Measurement Bruce W Forgan, WMO RAV Metrology Workshop, Melbourne, Novemberr 2011.
3) Empirical estimate of surface longwave radiation Use an empirical estimate of the clear-sky surface downward longwave radiation (SDLc) to estimate the.

3) Empirical estimate of surface longwave radiation Use an empirical estimate of the clear-sky surface downward longwave radiation (SDLc) to estimate the.
Seasonal Evolution of the Surface Radiation Balance in the City of São Paulo Amauri Pereira de Oliveira Jacyra Soares Grupo de Micrometeorologia Departamento.

Seasonal Evolution of the Surface Radiation Balance in the City of São Paulo Amauri Pereira de Oliveira Jacyra Soares Grupo de Micrometeorologia Departamento.
The Earth’s Global Energy Balance

The Earth’s Global Energy Balance
GEM Climate Performance over Arctic *** A Simulation on MARVIN *** Minwei QIAN, Colin Jones, Katja Winger.

GEM Climate Performance over Arctic *** A Simulation on MARVIN *** Minwei QIAN, Colin Jones, Katja Winger.
Introduction Down-welling short-wave and long-wave radiation (DSR and DLR), clouds and aerosols are key components in the radiative balance of the Earth.

Introduction Down-welling short-wave and long-wave radiation (DSR and DLR), clouds and aerosols are key components in the radiative balance of the Earth.
Solar UV measurements at the Agricultural University of Norway Cecilia Futsaether and Arne Auen Grimnes, Dept. of Agricultural Engineering, Agricultural.

Solar UV measurements at the Agricultural University of Norway Cecilia Futsaether and Arne Auen Grimnes, Dept. of Agricultural Engineering, Agricultural.
NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable.

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable.
(theta) dependence of intensity theta A’A >. Energy per square meter decreases at lower sun angles and shorter daylight periods.

(theta) dependence of intensity theta A’A >. Energy per square meter decreases at lower sun angles and shorter daylight periods.
1) Solar radiation ( SUMMARY ); 2) A simple earth energy balance model.

1) Solar radiation ( SUMMARY ); 2) A simple earth energy balance model.
An improved energy balance model: Atmosphere and Greenhouse gases

An improved energy balance model: Atmosphere and Greenhouse gases
Blackbody radiation and solar radiation 1)More on Blackbody Radiation; Black body radiation 2) Magnitude of Solar radiation.

Blackbody radiation and solar radiation 1)More on Blackbody Radiation; Black body radiation 2) Magnitude of Solar radiation.
Solar radiation and earth energy balance 1) Paul’s Demo 2) Magnitude of Solar Radiation ( Estimate of the power of Garden lights ) 2) Earth energy balance.

Solar radiation and earth energy balance 1) Paul’s Demo 2) Magnitude of Solar Radiation ( Estimate of the power of Garden lights ) 2) Earth energy balance.
Radiative Properties of Clouds SOEE3410 Ken Carslaw Lecture 3 of a series of 5 on clouds and climate Properties and distribution of clouds Cloud microphysics.

Radiative Properties of Clouds SOEE3410 Ken Carslaw Lecture 3 of a series of 5 on clouds and climate Properties and distribution of clouds Cloud microphysics.
Heat and freshwater budegts, fluxes, and transports Reading: DPO Chapter 5.

Heat and freshwater budegts, fluxes, and transports Reading: DPO Chapter 5.
Radiative Properties of Clouds SOEE3410 Ken Carslaw Lecture 3 of a series of 5 on clouds and climate Properties and distribution of clouds Cloud microphysics.

Radiative Properties of Clouds SOEE3410 Ken Carslaw Lecture 3 of a series of 5 on clouds and climate Properties and distribution of clouds Cloud microphysics.
3. Climate Change 3.1 Observations 3.2 Theory of Climate Change 3.3 Climate Change Prediction 3.4 The IPCC Process.

3. Climate Change 3.1 Observations 3.2 Theory of Climate Change 3.3 Climate Change Prediction 3.4 The IPCC Process.
University of Bayreuth Department of Micrometeorology Thomas Foken 3 rd COPS and GOP Workshop, Hohenheim, 10-11 April 2006 Boundary-Layer Measurements.

University of Bayreuth Department of Micrometeorology Thomas Foken 3 rd COPS and GOP Workshop, Hohenheim, April 2006 Boundary-Layer Measurements.
Forcing the Climate. Climate Forcing Radiative Forcing Non-Radiative Forcing Change in the Earth’s energy balance.

Forcing the Climate. Climate Forcing Radiative Forcing Non-Radiative Forcing Change in the Earth’s energy balance.
THE RADIATION BUDGET (Exercise) Exercise: Monitor radiation budget at 2 sites (urban rural) using instruments.

THE RADIATION BUDGET (Exercise) Exercise: Monitor radiation budget at 2 sites (urban rural) using instruments.

Similar presentations

Ads by Google