A trip to the Swiss village where the world calibrates its solar monitoring instruments

Pyrheliometer in front of a mountain area

Measuring the energy of the sun precisely is not as easy as tracking distances or weight. To set an international standard for solar monitoring instruments radiometers, the World Radiation Centre in Davos, Switzerland, holds comparison events that result in the World Radiometric Reference. One of the participants was Dr. Joop Mes, Senior Scientist at OTT HydroMet. In this short interview, he explains what the IPC is and why it is so important.

Top 5 Most Read Blog Articles 2021

Man reading a book

2021 is slowly passing by. Scrolling through the articles we’ve published throughout the year reflects the trends and challenges in the meteorological community. From new airport weather guidelines to innovative sensor technologies to deep dives on wind and solar radiation measurements – these are our five most read articles of 2021.

Solar Podcast: Back from Intersolar 2021 – Learnings and Innovations

Starting with uncertain expectations, Intersolar Europe has turned into an overwhelming success. Although Covid-19 and its effects still pose challenges, the solar industry looks ahead optimistically. The OTT HydroMet booth proved to be a magnet for visitors, who showed great interest for the company’s environmental monitoring solutions. In our latest episode, we ask our participants […]

New Podcast Episode: Getting Runways Ready for ICAO GRF

Ensuring safe conditions on runways is a highly responsible task. From November 4th on, the International Civil Organization launches the Global Reporting Format (GRF) will be applicable for airports all over the world. It features major points that are already covered in the TALPA that is valid for North America. In our latest episode, we […]

Hamburg Airport meets highest safety standard ICAO GRF with OTT HydroMet systems

Control vehicle at Hamburg Airport

A new guideline standardizes the assessment of runway conditions at airports. The international Global Reporting Format (ICAO GRF) helps pilots to better assess conditions on the runway. Hamburg Airport is the first German airport to meet the safety standard with an innovative solution from OTT HydroMet. To increase air traffic safety, the International Civil Aviation […]

New Podcast Episode: Reading WMO Guidelines Right

To make meteorological measurements comparable, the World Meteorological Organization WMO establishes guidelines for atmospheric parameters. These are covered by WMO-No. 8 for highest precision meteorological monitoring. However, for many applications like road weather monitoring, smart cities and others, meeting scientific standards is not necessary. In this episode, Tobias Weil, Business Development Manager & Dieter Knauss, […]

Spectral Selectivity vs. Spectral Error: Shedding Light on ISO 9060:2018

In late 2018, the ISO 9060 standard for solar radiometers underwent a remarkable update that brought significant changes on the classification of solar radiation measurement quality. At first glance, ISO 9060:2018 appears to be mainly a renaming of radiometer classification launched in the original version from 1990. But, as often, the devil is in the […]

Hot Topics in Monitoring Solar Irradiance

Pyranometer

We have a lot of contacts with existing and prospective customers in the solar energy industry; at exhibitions, in workshops or by email and through the Kipp & Zonen support system. Many of the same issues keep coming up, in one form or another. So, we have decided to put together a whitepaper that addresses […]

Soiling Measurement is Included in IEC Standard 61724-1

PV plant

For utility-scale PV plants the Performance Ratio (PR) is an important indicator of the efficiency of all the components used. Factors like solar irradiance, PV module temperature, module orientation, module cleanliness; all the way down the chain to cables, connectors, DC and AC power (inverter performance). All of these have their influences on the real […]

Choosing the right data logger for your Kipp & Zonen CMP series pyranometer

Pyranometer

Kipp & Zonen receives a lot of questions about whether a particular data logger is suitable for use with our instruments. These are mainly from the solar energy sector, where users are less familiar with the signal output than in meteorology and climate research. Let me share my experiences on dataloggers to you. I will […]