William A. Lahoz

Validation practices for satellite soil moisture retrievals: What are (the) errors?

Gruber, Alexander; de Lannoy, Gabriëlle J.M; Albergel, Clément; Al-Yaari, Amen; Brocca, Luca; Calvet, Jean-Christophe; Colliander, Andreas; Cosh, Michael H.; Crow, Wade T.; Dorigo, Wouter Arnaud; Draper, Clara Sophie; Hirschi, Martin; Kerr, Yann H.; Konings, Alexandra G.; Lahoz, William A.; McColl, Kaighin Alexander; Montzka, Carsten; Muñoz-Sabater, Joaquín ; Peng, Jian; Reichle, Rolf H.; Richaume, Philippe; Rüdiger, Christoph; Scanlon, Tracy; van der Schalie, Robin; Wigneron, Jean Pierre; Wagner, Wolfgang

Innovative environmental monitoring for Norwegian municipalities using low-cost sensor networks. The iFLINK project.

Castell, Nuria; Dauge, Franck Rene; Grossberndt, Sonja; Høiskar, Britt Ann Kåstad; Lahoz, William A.; Lepioufle, Jean-Marie; Logna, Robert; Schneider, Philipp; Vallejo, Islen; Vogt, Matthias; Bartonova, Alena

Technical note: Reanalysis of Aura MLS chemical observations

Errera, Quentin; Chabrillat, Simon; Christophe, Yves; Debosscher, Jonas; Hubert, Daan; Lahoz, William A.; Santee, Michelle L.; Shiotani, Masato; Skachko, Sergey; von Clarmann, Thomas; Walker, Kaley A.

Retrieval of Soil Moisture from Sentinel-1A&B over Northern Latitudes

Blyverket, Jostein; Schneider, Philipp; Lahoz, William A.; Malnes, Eirik; Grahn, Jakob; Åsmund , Bakketun; Halsne, Trygve

Monitoring Soil Moisture Drought over Northern High Latitudes from Space

Blyverket, Jostein; Hamer, Paul David; Schneider, Philipp; Albergel, Clement; Lahoz, William A.

Mapping urban air quality using a network of low-cost sensors: A data assimilation approach

Schneider, Philipp; Castell, Nuria; Bartonova, Alena; Lahoz, William A.

Microwave satellite remote sensing of soil moisture

Blyverket, Jostein; Hamer, Paul; Lahoz, William A.

ESA Climate Change Initiative Phase II Soil Moisture. Product Validation and Intercomparison Report. Revision 3 (PVIR), D4.1.2, Version 0.1, 12 October 2018.

Lahoz, William A.; Blyverket, Jostein; Hamer, Paul

Strongly coupled data assimilation (SCDA) of SMOS land surface brightness temperature in WRF using the EnKF

Blyverket, Jostein; Bertino, Laurent; Hamer, Paul David; Svendby, Tove Marit; Lahoz, William A.

Assimilation of the ESA CCI ACTIVE and PASSIVE soil moisture product using the Ensemble Kalman Filter.

Blyverket, J.; Hamer, P.; Bertino, L.; Lahoz, W.

Towards creating a ESA CCI soil moisture root-zone product.

Blyverket, J.; Hamer, P.; Bertino, L.; Gruber, A.; Lahoz, W.

Towards assimilation of passive microwave brightness temperature at northern latitudes using the ensemble Kalman Filter.

Blyverket, J.; Hamer, P.; Bakketun, Å.; Lahoz, W.

Assimilation of the ESA CCI Soil Moisture ACTIVE and PASSIVE Product into the SURFEX Land Surface Model using the Ensemble Transform Kalman Filter.

Blyverket, J.; Hamer, P.; Bertino, L.; Lahoz, W.

The potential of low-cost sensor networks for monitoring and modelling urban air quality.

Schneider, P.; Castell, N.; Dauge, F. R.; Lahoz, W.; Bartonova, A.

Mapping urban air quality in near real-time using observations from low-cost sensors and model information.

Schneider, P.; Castell, N.; Vogt, M.; Dauge, F. R.; Lahoz, W. A.; Bartonova, A.

Mapping urban air quality in real-time: Applications of crowdsourced microsensor data.

Schneider, P.; Castell, N.; Vogt, M.; Lahoz, W.; Bartonova, A.

Impact of spaceborne carbon monoxide observations from the S-5P platform on tropospheric composition analyses and forecasts.

Abida, R.; Attié, J.-L.; El Amraoui, L.; Ricaud, P.; Lahoz, W.; Eskes, H.; Segers, A.; Curier, L.; de Haan, J.; Kujanpää, J.; Nijhuis, A. O.; Tamminen, J.; Timmermans, R.; Veefkind, P.

Mapping urban air quality using low-cost sensors: Opportunities and challenges.

Schneider, P.; Castell, N.; Lahoz, W.; Vallejo, I.; Bartonova, A.

On the feasibility of monitoring carbon monxide in the lower troposphere from a constellation of Northern Hemisphere geostationary satellites: Global scale assimilation experiments (Part II).

Barre, J.; Edwards, D.; Worden, H.; Arellano, A.; Gaubert, B.; Da Silva, A.; Lahoz, W.; Anderson, J.

Toward improving the representation of the water cycle at High Northern Latitudes.

Lahoz, W.; Svendby, T.; Hamer, P.; Blyverket, J.; Kristiansen, J.; Luijting, H.

Uncertainty in Citizen Science observations: from measurement to user perception.

Lahoz, W.; Schneider, P.; Castell, N.

Toward improving the representation of the water cycle at High Northern Latitudes.

Lahoz, W.A.; Svendby, T.; Griesfeller, A.; Kristiansen, J.

Uncertainty in mapping urban air quality using crowdsourcing techniques.

Schneider, P.; Castell, N.; Lahoz, W.; Bartonova, A.; the CITI-SENSE Consortium Team.

Data fusion of crowdsourced observations and model data for high-resolution mapping of urban air quality.

Schneider, P.; Castell, N.; Vallejo, I.; Vogt, M.; Lahoz, W.

Evaluation of satellite soil moisture products over Norway using ground-based observations.

Griesfeller, A.; Lahoz, W.A.; de Jeu, R.A.M.; Dorigo, W.; Haugen, L.E.; Svendby, T.M.; Wagner, W.

Personalizing air pollution exposure estimates using low-cost sensors and data fusion techniques.

Castell, N.; Schneider, P.; Lahoz, W.A.

Adding value to the Global Observing System: Making sense of high-resolution observations from ubiquitous sensing and citizen science.

Lahoz, W.

ISSI International Team – Q3: How can we add value to soil moisture information from satellites.

Lahoz, W.

Making visible the invisible: communicating air quality.

Castell, N.; Noll, J.; Fayyad, S.; Fredriksen, M.F.; Schneider, P.; Liu, H.-Y.; Lahoz, W.

Toward improving the representation of the water cycle at High Northern Latitudes.

Lahoz, W.A.; Svendby, T.; Griesfeller, A.; Kristiansen, J.

Adding value to the Global Observing System: Making sense of high-resolution air quality observations using data assimilation techniques.

Lahoz, W.A.; Schneider, P.; Castell, N.; Bartonova, A.

Adding value to the Global Observing System: Making sense of high-resolution observations from ubiquitous sensing and Citizen Science.

Lahoz, W.A.

Observing System Simulation Experiments for air quality.

Timmermans, R.; Lahoz, W.A.; Attié, J.-L.; Peuch, V.-H.; Curier, L.; Edwards, D.; Eskes, H.; Builtjes, P.

Satellite-based trends of tropospheric NO2 over large urban agglomerations and an approach towards their validation.

Schneider, P.; Stebel, K.; Lahoz, W.A.; van der A, R.

Estimating personal exposure to air pollution – can wearable low-cost sensors help?

Castell, N.; Liu, H.-Y.; Schneider, P.; Lahoz, W.; Bartonova, A.

Toward quality-controlled soil moisture products for climate studies using data assimilation of multiple satellite datasets.

Lahoz, W.; Svendby, T.; Griesfeller, A.; de Jeu, R.; Dorigo, W.

On the feasibility of monitoring carbon monxide in the lower troposphere from a constellation of Northern Hemisphere geostationary satellites. (Part 1).

Barre, J.; Edwards, D.; Worden, H.; Da Silva, A.; Lahoz, W.

Mobile technologies and services for environmental monitoring: The Citi-Sense-MOB approach.

Castell, N.; Kobernus, M.; Liu, H.-Y.; Schneider, P.; Lahoz, W.; Berre, A.J.; Noll, J.

Chemical data assimilation.

Errera, Q.; Lahoz, W.; Chabrillat, S.

Communicating uncertainty to users: From number to perception.

Lahoz, W.

ISSI International Team ‘Adding value to soil moisture information for climate studies’.

Lahoz, W.

Assimilation of ASCAT, AMSR-E and SMOS soil moisture products over Europe: an assessment of the relative impact of each satellite dataset.

Lahoz, W.; Schneider, P.

Seminar on data assimilation and citizen science.

Lahoz, W.

Data assimilation for the Earth System.

Lahoz, W.

Assimilation in catchment-scale model.

Lahoz, W.; Svendby, T.; Griesfeller, A.; Kjølerbakken, M.

Towards real-time data fusion of low-cost sensor observations with model output for mapping urban-scale air quality.

Schneider, P.; Castell, N.; Lahoz, W.A.

Toward assimilation of crowdsourcing data using the EnKF.

Lahoz, W.; Schneider, P.

Tropospheric CO vertical profiles deduced from total columns using data assimilation: methodology and validation.

El Amraoui, L.; Attié, J.-L.; Ricaud, P.; Lahoz, W. A.; Piacentini, A.; Peuch, V.-H.; Warner, J. X.; Abida, R.; Barré, J.; Zbinden, R.

The earth’s hydrological cycle.

Bengtsson, L.; Bonnet, R.-M.; Calisto, M.; Destouni, G.; Gurney, R.; Johannessen, J.; Kerr, Y.; Lahoz, W.A.; Rast, M. (eds.)

The added value of a visible channel to a geostationary thermal infrared instrument to monitor ozone for air quality.

Hache, E.; Attié, J.-L.; Tourneur, C.; Ricaud, P.; Coret, L.; Lahoz, W. A.; El Amraoui, L.; Josse, B.; Hamer, P.; Warner, J.; Liu, X.; Chance, K.; Höpfner, M.; Spurr, R.; Natraj, V.; Kulawik, S.; Eldering, A.; Orphal, J.

Assimilation of ASCAT, AMSR-E and SMOS soil moisture products over Europe: an assessment of the relative impact of each satellite dataset.

Lahoz, W.; Svendby, T.; Griesfeller, A.; De Jeu, R.; Dorigo, W.

Building and evaluating sensor-based Citizens’ Observatories for improving quality of life in cities.

Castell, N.; Lahoz, W.; Schneider, P.; Hoiskar, B.A.; Grossberndt, S.; Naderer, C.; Robinson, J.; Kocman, D.; Horvat, M.; Bartonova, A.

Combined data assimilation of ozone tropospheric columns and stratospheric profiles in a high-resolution CTM.

Barré, J.; Peuch, V.-H.; Lahoz, W. A.; Attié, J.-L.; Josse, B.; Piacentini, A.; Eremenko, M.; Dufour, G.; Nedelec, P.; von Clarmann, T.; El Amraoui, L.

Data assimilation: Adding value to the citizen’s observatory.

Lahoz, W.A.

Spatial mapping and data assimilation of observations from low-cost air quality sensors within CITI-SENSE.

Schneider, P.; Lahoz, W.; Castell, N.

Closing the gaps in our knowledge of the hydrological cycle over land: Conceptual problems and the role of data assimilation.

Lahoz, W.; de Lannoy, G.J.M.

Evaluation of soil moisture products over Norway.

Griesfeller, A.; Lahoz, W.A.; Svendby, T.M.; Haugen, L.M.; Wagner, W.; Dorigo, W.; Kerr, Y.; de Jeu, R.A.M.; Kristiansnen, J.

Evaluation of SMOS and ASCAT soil moisture products over Norway using ground-based in situ observations.

Griesfeller, A.; Lahoz, W.A.; Svendby, T.M.; Haugen, L.M.; Wagner, W.; Dorigo, W.; Kerr, Y.; de Jeu, R.A.M.

Evaluation of SMOS and ASCAT soil moisture products over Norway using ground-based in situ observations.

Griesfeller, A.; Lahoz, W.A.; Svendby, T.M.; Haugen, L.M.; Wagner, W.; Dorigo, W.; Kerr, Y.; de Jeu, R.A.M.

An OSSE to study the impact of S4/5 spaceborne observations on air quality data assimilation systems.

Eskes, H.,Veefkind, P.; Williams, J.; Nijhuis, A.O.; de Haan, J.; Attie, J.; Abida, R.; Ricaud, P.; El Amraoui, L.; Curier, L.; Segers, A.; Kujanpaa, J.; Tamminen, J.; Lahoz, W.

Evaluation of SMOS and ASCAT soil moisture products over Norway using ground-based in situ observations.

Griesfeller, A.; Lahoz, W.A.; Svendby, T.M.; Haugen, L.M.; Wagner, W.; Dorigo, W.; Kerr, Y.; de Jeu, R.A.M.

Citizen’s Observatory: Where does our air quality come from?

Lahoz, W.

Soil moisture over Norway.

Griesfeller, A.; Lahoz, W.A.; Svendby, T.

ASCAT/SMOS data assimilation.

Lahoz, W.A.

CITI-SENSE Project, WP6: Methods – Information products and services – motivation.

Lahoz, W.A.

What makes a good OSSE?

Lahoz, W.A.

Atmospheric compositions from satellite remote sensing for air quality and climate studies.

Lahoz, W.A.; Warner, J.; Attie, J.-L.

Determining the future Global Climate Observing System (GCOS): The role of observing system simulation experiments.

Lahoz, W.A.

Monitoring air quality: The role of OSSEs.

Lahoz, W.A.

Conceptual problems: general overview.

Lahoz, W.A.; De Lannoy, G.

Spatio-temporal variability of the polar middle atmosphere. Insights from over 30 years of research satellite observations.

Lahoz, W.A.; Orsolini, Y.J.; Manney, G.L.; Minschwaner, K.; Allen, D.R.; Errera, Q.; Jackson, D.R.; Lambert, A.; Lee, J.; Pumphrey, H.; Schwartz, M.; Wu, D.

Monitoring air quality: the role of OSSEs in determining the future global observing system.

Lahoz, W.; Attie, J.L.; El Amraoui, L.; Hache, E.; Ricaud, P.; Dupont, R.; Jamouille, E.; Orphal, J.; Flaud, J.M.; Peuch, V.H.

Stratosphere-troposphere ozone exchange from high resolution MLS ozone analyses.

Barré, J.; Peuch, V.-H.; Attié, J.-L.; El Amraoui, L.; Lahoz, W. A.; Josse, B.; Claeyman, M.; Nédélec, P.

Data assimilation of SMOS data: making sense of soil moisture observations.

Lahoz, W.A.; Svendby, T.; Sollund, H.

Task 8: Assimilation: tendencies and transfer standard.

Lahoz, W.

A thermal infrared instrument onboard a geostationary platform for CO and O3 measurements in the lowermost troposphere: Observing System Simulation Experiments (OSSE).

Claeyman, M.; Attié, J.-L.; Peuch, V.-H.; El Amraoui, L.; Lahoz, W. A.; Josse, B.; Joly, M.; Barré, J.; Ricaud, P.; Massart, S.; Piacentini, A.; von Clarmann, T.; Höpfner, M.; Orphal, J.; Flaud, J.-M.; Edwards, D.P.

A geostationary thermal infrared sensor to monitor the lowermost troposphere: O3 and CO retrieval studies.

Claeyman, M.; Attié, J.-L.; Peuch, V.-H.; El Amraoui, L.; Lahoz, W.A.; Josse, B.; Ricaud, P.; von Clarmann, T.; Höpfner, M.; Orphal, J.; Flaud, J.-M.; Edwards, D.P.; Chance, K.; Liu, X.; Pasternak, F.; Cantié, R.

Constituent assimilation.

Lahoz, W.; Errera, Q.

Assimilation for Norway.

Lahoz, W.; Svendby, T.; Johnsrud, M.

Research satellites.

Lahoz, W.

Data assimilation. Making sense of observations.

Lahoz, W.; Khattatov, B.; Ménard, R. (eds.)

The NILU SURFEX-EnKF land data assimilation system.

Lahoz, W.; Walker, S.-E.; Dammann, D.

Expanding collaboration in Joint OSSEs.

Masutani, M.; Errico, R.; Schlatter, T.W.; Woollen, J.S.; Xie, Y.; Zhu, T.; Prive, N.; Yang, R.; Riishojgaard, L.P.; Stoffelen, A.; Marseille, G.-J.; Andersson, E.; Weng, F.; Kleespies, T.J.; Reale, O.; Emmitt, G.D.; Greco, S.; Wood, S.A.; Hill, C.; Anantharaj, V.; Fitzpatrick, P.; Fan, X.; Pryor, H.; Salmon, E.; Liu, H.-C.; Sienkiewicz, M.,Silva, A. da, Sun, H.; Song, Y.; Govett, M.; Pu, Z.; Cucurull, L.; Lord, S.J.; Devenyi, D.; Birkenheuer, D.L.; Jung, T.; Thompkins, A.; Groff, D.; Kleist, D.; Treadon, R.; Fielding, K.; Lahoz, W.; Brin, E.; Toth, Z.; Sato, Y.; Hu, M.; Weygandt, S.; McGill, M.J.; Miyosh, T.; Enomoto, T.; Watanabe, M.; Koyama, H.; Rochen, Y.; Seablom, M.; Hauss, B.I.; Burn, R.; Higgins, G.; Atlas, R.; Koch, S.; Wang, H.; Chen, Y.; Huang, X.-Y.

Status and plans for cooperation with SURFEX between NILU and met.no.

Lahoz, W.A.

4D-Var assimilation of MIPAS chemical observations: Ozone and nitrogen dioxide analyses.

Errera, Q.; Daerden, F.; Chabrillat, S.; Lambert, J.C.; Lahoz, W.A.; Viscardy, S.; Bonjean, S.; Fonteyn, D.

Land data assimilation: a tool for improving land surface models and observations.

Lahoz, W.A.; Prata, F.; Orsolini, Y.

Editoral: The COST 723 Action.

Lahoz, W.A.; Geer, A.J.; Orsolini, Y.J.

The Assimilation of Envisat data (ASSET) project.

Lahoz, W.A.; Geer, A.J.; Bekki, S.; Bormann, N.; Ceccherini, S.; Elbern, H.; Errera, Q.; Eskes, H.J.; Fonteyn, D.; Jackson, D.R.; Khattatov, B.; Marchand, M.; Massart, S.; Peuch, V.-H.; Rharmili, S.; Ridolfi, M.; Segers, A.; Talagrand, O.; Thornton, H.E.; Vik, A.F.; von Clarmann, T.