https://www.en.meteo.physik.uni-muenchen.de/~emde/ 2026-04-05T12:36:03+0000 https://www.en.meteo.physik.uni-muenchen.de/~emde/ https://www.en.meteo.physik.uni-muenchen.de/~emde/lib/tpl/dokuwiki-claudia/images/favicon.ico text/html 2019-02-01T10:42:45+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:3dcats&rev=1549017765&do=diff ESA project 3DCATS WP 100 WP 200 text/html 2020-09-23T18:17:12+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:follow_up&rev=1600885032&do=diff Meeting Future Plans, Sep 24 2020, 10:00 Agenda * ESA Opportunities * Objectives for future study * Next steps 1. Opportunities for ESA funding EO SCIENCE FOR SOCIETY PERMANENTLY OPEN CALL FOR PROPOSALS The objective of the call is to provide a framework to rapidly respond to new innovative ideas. The scope of the call covers elements of Block 4 of Future EO-1 Segment 1. The particular focus for innovative activities under each element is as follows: text/html 2019-02-01T10:30:33+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp100&rev=1549017033&do=diff 3DCATS WP 100: ICON clouds MODIS simulation and observation: [Simulated with EMPHASIS by Leo Scheck] [Real MODIS image] text/html 2021-09-02T09:16:12+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200&rev=1630574172&do=diff 3DCATS WP 200: Impact assessment Radiative transfer model intercomparison for clear sky Radiative transfer model intercomparison for 1D clouds Retrieval of NO2 for clearsky pixels in vicinity of clouds Retrieval of NO2 for partially cloudy pixels Retrieval of NO2 for scenes including realistic clouds Setup for O2A band simulations Status of WP 200 [TN2 - Impact assessment - Draft report (pdf)] [Final presentation - Synthetic dataset (pdf)] text/html 2020-07-21T22:18:18+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_2d_clouds&rev=1595369898&do=diff Retrieval of NO2 for clearsky pixels in vicinity of clouds In order to understand the effect of cloud shadowing and scattering into clear regions, we follow the setup presented by [Sihler et al. (Poster, EGU 2014) ]. [Schematic of cloud setup from Sihler 2014.] Base case settings Clear sky settings as in intercomparison between LIDORT and MYSTIC. Cloud settings: text/html 2022-10-31T13:15:07+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_2d_clouds_data&rev=1667222107&do=diff Simulations for 2D cloud (reflectance and layer-AMFs) Settings: * absorption optical thickness from Huan (US standard, European polluted NO2 profile only tropospheric part) * distance extended to 15km away from cloud edge (to cover the cloud shadowing regions) text/html 2019-02-01T10:42:35+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_box_clouds&rev=1549017755&do=diff WP 200: Retrieval simulations for box clouds The first step to assess the accuracy of the cloud correction scheme in BIRA's NO2 retrieval is to generate synthetic data for various box cloud cases. The retrieval is then applied to the synthetic data. The analysis of the results will hopefully provide first insights in the performance of the cloud correction scheme depending on cloud type. text/html 2019-10-29T12:32:17+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_intercomp_clear&rev=1572352337&do=diff WP 200: Clear sky radiative transfer model intercomparison In order to make sure that the radiative transfer models MYSTIC (to be used to generate synthetic data) and LIDORT (used in BIRA's NO2 retrieval algorithm) are consistent, we first performed a clear sky model intercomparison. text/html 2020-06-25T19:47:47+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_intercomp_cloud&rev=1593114467&do=diff MYSTIC results including cloud for model intercomparison This data includes the molecular optical thickness provided by Huan (moltau_400_500_u76_EuropeNO2.nc): [Results for 400-500 nm] [Results for 400-500 nm, including more sza and albedo values] This data includes the molecular optical thickness provided by Huan (HITRAN2016_moltau_755_775_u76.nc) text/html 2020-03-10T11:04:26+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_o2a_band_setup&rev=1583838266&do=diff Comparison of spectra averaged over 3 bands in O2A band For the retrieval, averages over three spectral bands within the O2A band are used. Therefore, in order to reduce data storage requirements, we decided to store only the 3 values of each spectrum. text/html 2019-12-19T09:24:15+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds&rev=1576747455&do=diff Retrieval of NO2 for scenes including realistic clouds Test case, subdomain of ICON scene (350x350km²) Test case, full ICON scene (698x763km²) Geostationary Orbit (GEO), VIS Geostationary Orbit (GEO), O2A Low Earth Orbit (LEO) Low Earth Orbit (LEO), O2A text/html 2019-11-13T07:48:25+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_geo&rev=1573631305&do=diff Simulations for Geostationary Earth Orbit (GEO) General settings: * Wavelength range: 400-500nm (0.2nm resolution) * Layer AMF calculated at 460nm * Molecular tau file provided by Huan: moltau_400_500_u76_EuropeNO2_v2.nc * VZA: 58.3°, VAA: 196.3° text/html 2022-11-03T15:06:40+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_geo_extvis&rev=1667488000&do=diff Simulations for Geostationary Earth Orbit (GEO) General settings: * Wavelength range: 310-500nm (0.2nm resolution) * Layer AMF calculated at 460nm * NO2 profile “European polluted” * Absorption: O4 Thalman, O3 Serdyuchenko, NO2 Vadaele text/html 2019-12-18T09:51:08+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_geo_o2a&rev=1576662668&do=diff Simulations for Geostationary Earth Orbit (GEO) General settings: * Wavelength range: O2A-band * Layer AMF calculated at 758nm * US-standard atmosphere, REPTRAN parameterization * VZA: 58.3°, VAA: 196.3° * clouds from ICON simulation (wc mie, ic baum_v36 ghm) text/html 2023-01-24T12:15:09+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_geo_o2a_full&rev=1674562509&do=diff Simulations for Geostationary Earth Orbit (GEO) General settings: * Wavelength range: O2A-band * Layer AMF calculated at 758nm * US-standard atmosphere, REPTRAN parameterization * VZA: 58.3°, VAA: 196.3° * clouds from ICON simulation (wc mie, ic baum_v36 ghm) text/html 2019-11-13T09:09:38+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_leo&rev=1573636178&do=diff Simulations for Low Earth Orbit (LEO) General settings: * Wavelength range: 400-500nm (0.2nm resolution) * Layer AMF calculated at 460nm * Molecular tau file provided by Huan: moltau_400_500_u76_EuropeNO2_v2.nc * clouds from ICON simulation (wc mie, ic baum_v36 ghm) text/html 2023-11-16T13:44:27+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_leo_extvis&rev=1700142267&do=diff Simulations for Low Earth Orbit (LEO) General settings: * Wavelength range: 310-500nm (0.2nm resolution) * Layer AMF calculated at 460nm * NO2 profile “European polluted” * Absorption: O4 Thalman, O3 Serdyuchenko, NO2 Vadaele * clouds from ICON simulation (wc mie, ic baum_v36 ghm) text/html 2019-12-19T09:16:01+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_leo_o2a&rev=1576746961&do=diff Simulations for Low Earth Orbit (LEO) General settings: * Wavelength range: O2A-band * Layer AMF calculated at 758nm * US-standard atmosphere, REPTRAN parameterization * clouds from ICON simulation (wc mie, ic baum_v36 ghm) Results for case 0 text/html 2023-01-24T16:28:22+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_leo_o2a_full&rev=1674577702&do=diff Simulations for Low Earth Orbit (LEO) General settings: * Wavelength range: O2A-band * Layer AMF calculated at 758nm * US-standard atmosphere, REPTRAN parameterization * clouds from ICON simulation (wc mie, ic baum_v36 ghm) Results for case 0 text/html 2020-11-10T20:05:42+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_test&rev=1605038742&do=diff Retrieval of NO2 for scenes including realistic clouds Test case * Subdomain of ICON, approx. 350x350km² * Resolution of cloud data approx. 1.2×1.2km², 296x276x110 grid boxes * Simulations performed for pixel size of 7x7km² (50×48 pixels) text/html 2020-11-10T20:06:29+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_realistic_clouds_test_full&rev=1605038789&do=diff Retrieval of NO2 for scenes including realistic clouds Reflectance calculated for full domain (588x624 pixels) 2×1 [Reflectance data in numpy format.] Settings for reflectance simulation * REPTRAN channel sentinel3_slstr_b1 * US standard atmosphere * SZA: 30°, SAA: 13° * text/html 2020-03-10T11:02:38+0000 Anonymous (anonymous@undisclosed.example.com) https://www.en.meteo.physik.uni-muenchen.de/~emde/doku.php?id=projects:3dcats:wp200_status&rev=1583838158&do=diff Summary of email discussion in November I tried to summarize the number of cases and to estimate the CPU time: Surface albedo - 3 albedo values 0.05, 0.1, 0.2 for visible range 0.05, 0.2, 0.5 for O2A band GEO SZA: 20,40,60°, SAA: -90,-45,0,45,90°, VZA: 58.3°, VAA: 196.3° In total: 3*3*1*5*1=45 combinations