InterMet 2: Private Sector Briefings on Innovations in Technology & Forecasting Services

Continuous temperature and humidity profiles from lidar – A powerful tool towards robust weather forecasting

Efstathiou Konstantina, Sales Manager, Raymetrics S.A. CONTINUOUS TEMPERATURE AND HUMIDITY PROFILES FROM LIDAR: A POWERFUL TOOL TOWARDS ROBUST WEATHER FORECASTING

INTERMET ASIA_SUNTEC, SINGAPORE- 27-28 MARCH, 2019 RAYMETRICS AT A GLANCE

¡ Raymetrics S.A. (“Raymetrics” or the “Company”) is a global leader in atmospheric LiDAR) manufacturing ¡ The Company mainly serves the meteorology, aviation, mining, military and academia and research sectors with a total installed base of around 70 systems) ¡ The product portfolio comprises Standardized Vertical Profiling- and Standardized 3D-Scanning LiDARs with the ability to combine new technology with existing systems such as RADAR ¡ In addition, Raymetrics offers customization for all its LiDAR-systems as well as installation, systems integration, maintenance services and training for new and existing customers ¡ Founded in 2002, the Company is headquartered in Athens (Greece) and employs ca. 20 people PRODUCT PORTFOLIO

Standardised Standardised 3D-Scanning Customized solutions Vertical Profiling

§Standardised solutions for §Standardised solution mainly for various § Custom Lidar development for meteorological applications including applications including incoming fog and various applications cloud height, volcanic ash, dust, fire cloud height detection as well as remote visibility measurements, mapping and smoke and particle detection as well §Different wavelength options localisation as atmospheric aerosol loading §Other application include pollution source §Different telescope diameter measurements profiling (dust, smoke or plume for §DIAL Lidars §Most powerful LiDAR system in the factory operations) §Rotational Raman Lidars product portfolio §Remains within the limits of the EU Standard on Laser Safety) and complies §Remains within the limits of the EU with the international standard for air Standard on Laser Safety) quality and environmental meteorology) VALUE CHAIN THROUGH ITS EXTENSIVE R&D EFFORTS, RAYMETRICS IS ABLE TO GENERATE MAXIMUM VALUE AND THEREBY UNDERPINS ITS TECHNOLOGICAL LEADERSHIP

Research and Procurement Assembly Testing Distribution End-User development

System Design Emitter (Laser) Direct Sales Meteorological Software Scanner and Development Optics Indirect Sales Academia

Prototype Photo detector development and receiver Aviation Sustained Position (GPS) Military Engineering systems

Oil & Gas

Civil Protection

Others ¡ Radiosondes (expensive-in terms of yearly use, and only 1 or 2 per day are used, large sampling errors, inability to TRADITIONAL measure profiles in real vertical column) ¡ Microwave Radiometers (passive remote sensing systems with low altitude TEMPERATURE resolution 300m at the ground and 1km at 2km altitude, unable to observe the correct gradient of the lower tropospheric AND temperature) ¡ Satellites (Remote sensing techniques HUMIDITY from space have vertical resolutions that are too low, greater than 1km in the lower troposphere, and are thus not able to MONITORING resolve temperature inversions) AND ¡ Lidar (The only ground based remote DRAWBACKS sensing technique with 24/7 data capability and with a spatial resolution 60-900m, able to offer lower tropospheric temperature observations , including inversions with high accuracy) RAMAN LIDAR OBSERVATIONS HAVE COME TO CLOSE A GAP IN THE PLANETARY BOUNDARY LAYER (PBL) AND LOW TROPOSPHERE (LT) OBSERVATION SYSTEMS

¡ Provide high quality measurements with unprecedented spatial and temporal resolution.

¡ Such systems can be successfully be assimilated to weather forecast models, allowing a more skilful weather and precipitation forecast. (The assimilation of temperature lidar profiles improves the representation of the pre-convective environment in the model-improves the forecasting of clouds and precipitation)

An observational network of Lidars measuring Temperature and Humidity in combination with data assimilation in high-resolution models, will improve significantly nowcasting and short-range forecasting especially for convective processes and clouds! TEMPERATURE AND HUMIDITY LIDAR SYSTEM

RAYMETRICS SOLUTION Based on Rotational Raman lidar technology we provide : • Atmospheric temperature profile; • Water vapor mixing ratio profile; • Aerosol extinction, backscatter, and depolarization coefficient profiles.

Performance, Function and features of a standard system: • Emission wavelength nm 354.8 • Telescope diameter mm >350 • Effective range (day) km 0.2 - 4.0 • Effective range (night) km 0.2 - 18 • Spatial resolution m 60 – 900 • Temporal Resolution min 10 - 90 • Water Vapor profiles Dusk to dawn measurements SAMPLE DATA: Temperature and Water Vapor Mixing Ratio ACCURATE PROFILING OF ATMOSPHERIC TEMPERATURE AND HUMIDITY WITH A NEW LIDAR SYSTEM FROM RAYMETRICS

GEORGE GEORGOUSIS, GEORGE TSAKNAKIS RAYMETRICS S.A., ATHENS, GREECE

PRESENTED AT: WMO_CIMO TECO AMSTERDAM OCTOBER 2018 TRUSTED BY SCIENTIST AND

OPERATIONAL AGENCIES

WORLDWIDE CONTACT US

RAYMETRICS S.A. 32 SPARTIS STR, METAMORPHOSIS, GR-14452, ATHENS, GREECE T+30 210 6655860 F +30 210 2827217 [email protected]