Playing with Sentinel 2 images I realized that the amount of snow this year has been very low compared to last winter. Here are a couple of images from January 2022 and 2023 of the Canfranc – Paticosa – Jaca area. One of the most interesting things about this EO browser is that in addition to a standard 2D visualisation, we can visualise in 3D. Here is an video example. Another interesting thing is to be able to quantify the snowfall. There is a snow classifier based on NSDI (Normalized Difference Snow Index, The Normalized Difference Snow Index (NDSI) snow cover is an index that is related to the presence of snow in a pixel and is a more accurate description of snow detection as compared to Fractional Snow Cover (FSC).
Category Archives: remote sensing
Faible taux d’humidité au Pays Basque. Sérieux ?
Quand vous venez passer le week-end dans un village du Pays Basque et que vous voyez cette image verte ci-dessous, vous vous dites, ho-ho, ici ils n’ont pas eu les problèmes de chaleur et de manque de pluie que nous avons subis dans le centre et le sud de la péninsule. Mais tout à coup, ils vous disent que oui, ils ont aussi souffert et qu’il est impossible qu’ils aient atteint les niveaux d’humidité des autres années…
Inland Water levels… Globally. Copernicus did it again!
The Water Observatory is an Earth-observation-based solution that provides reliable and timely information about surface water levels of waterbodies across the globe. All observations are provided and can be explored interactively via the Water Observatory Dashboard or via RESTful API. The Water Observatory provides a valuable service to local authorities, governmental agencies, natural parks and reserves, agricultural ministries and agencies, stakeholders in food and energy production, and citizens alike.
Tracking fires LIVE: Boiro (A Coruña, Spain)
We can track this up as we speak. We can measure burn areas on a regular basis, creating videos, capture images, creating indexes, histograms, etc. Everything for better understanding what is going on and maybe, why not, avoiding it in te future. If you would like more information, dont hesitate to contact us.
Measuring moisture: Normalized Difference Moisture Index (NDMI) Sentinel-2 2022
I am here in front of my desktop and I wonder how to take advantage of Sentinel Hub for tracking up moisture in a random plot anywhere in the world. Has it been irrigated at the right time for the type of crop? How has rainfall been affected over the analysis time? How has the use of certain fertilisers affected it? Has it positively affected production?. Let’s take a closer look.
Recuperación natural de un bosque de Pino Piñonero. Incendio en Pedro Bernado (Ávila)
En este micro vídeo he querido mostrar el proceso de recuperación natural de un bosque de Pino Piñonero (Pinus Pinea) a lo largo de tres años en Pedro Bernardo (Ávila, España). Fecha del incendio Junio 2019. Estimación previa a cuantificación: 40%. Imagenes Sentinel 2 – L2A. Usé una combinación 12-11-4. SWIR-2 (12), SWIR 1 (11), Red (4) entre las fechas de Junio 2019 y Junio 2022 a razón de una imagen al mes, seleccionando solo si ausencia total de nubes y cobertura total sobre la zona de análisis.
Sentinel-hub: Highlighting value differences in deserts! (not only!)
This Sentinel-2 aesthetic script can be used to produce beautiful, neon looking results over urban and dry areas. The script is especially useful to highlight value differences in deserts. It’s essentially an RGB composite, with a B12 and B04 difference (which does a good job at displaying certain desert features, like dunes) in the red,Continue reading “Sentinel-hub: Highlighting value differences in deserts! (not only!)”
Bombas en Mariupol, Ucrania. Una ciudad como la tuya y la mía
Aquello que no podemos apreciar en una imagen de color natural 4-3-2 en Sentinel-2 nada más tenemos que cambiar a un falso color 12-11-4 para exponer las explosiones y bombas, en definitiva, la muerte.
¡Viento del Sahara en España! ¡Sí!
De repente se levanta uno y ve los coches, los marcos de las ventanas y las aceras llenos de arena… ¿Qué es esto?, ¡Uno quiere comprender más en detalle! Si esto es en Madrid, qué no ocurrirá en Murcia (que está de camino)!! 🙂 Lo cierto es que si tomamos las imágenes del SENTINEL 5P Aerosol index podemos ver cómo en esa longitud de onda encontramos aerosoles. ¡Y muchos! ¿Y hacia dónde se desplazan?. Directos al centro de la península.
Wildfires in the sub-Saharan region
This image, acquired by one of the Copernicus Sentinel-2 on 8 February 2022, shows ongoing wildfires in the Boma National Park in South Sudan. Fires are common at this time of year in the sub-Saharan region.
Geovisualization.net 