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Earth Observing Laboratory
Field Data Archive

Dataset List

    14578 datasets found (100 shown). Full dataset descriptions and data access links are available by selecting the dataset title.
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    Dataset Projects Responsible parties Version/Date
    A link to the SAS Field Catalog Model Products section which includes imagery from the NASA Goddard Earth Observing System Model V5 (GOES5) Chemical Forecast Imagery for the campaign.
    • SAS
    final completed
    This dataset links to supplemental information for the project.
    • PREDICT
    final completed
    This dataset provides a link to the NASA GSFC AERONET (Aerosol Robotic Network) data archive.
    • SAS
    final completed
    This dataset provides a link to the NASA GSFC Aerosol Robotic Network (AERONET) data archive.
    • VOCALS
    final completed
    These model output files include aerosol direct effects. The files end in yyyymm extensions. The .ctl (control) files are GrADS description files. There are hourly, 6 hourly and monthly files. Within each type of file there are 4 ensembles, each with...
    • WAMME
    final 1.0
    2022-01-06
    The model output files are the files ending in yyyymm extensions. The .ctl (control) files are GrADS description files. There are hourly, 6 hourly, and monthly files. Within each type of file there are 4 ensembles, each with it's unique .ctl file. The...
    • WAMME
    final 1.0
    2022-01-06
    A link is provided to the NASA LaRC Intercontinental Chemical Transport Experiment Phase B (INTEX-B) Data Archive NASA J-31 AATS14 - Aerosol Optical Depth, Water Vapor Column; Solar Spectral Irradiance data  from Jens Redemann
    • MILAGRO
    final completed
    A link is provided to the NASA LaRC Intercontinental Chemical Transport Experiment Phase B (INTEX-B) Data Archive NASA J-31 Cloud Absorption Radiometer (CAR)  Multiangular and Multispectral Observations data  from Charles Gatebe.
    • MILAGRO
    final completed
    A link is provided to the NASA LaRC Intercontinental Chemical Transport Experiment Phase B (INTEX-B) Data Archive NASA J-31 NavMet Data Acquisition System (NMDAS) Navigation Meteorological Data Acquisition System data  from Warren Gore
    • MILAGRO
    final completed
    A link is provided to the NASA LaRC Intercontinental Chemical Transport Experiment Phase B (INTEX-B) Data Archive NASA J-31 Applanix POS System (POS AV) data  from Rose Dominguez.
    • MILAGRO
    final completed
    A link is provided to the NASA LaRC Intercontinental Chemical Transport Experiment Phase B (INTEX-B) Data Archive NASA J-31 Research Scanning Polarimeter (RSP) Tropospheric Aerosols and Cloud Properties data  from Brian Cairns.
    • MILAGRO
    final completed
    This dataset provides a link to the MILAGRO Field Catalog Reports section which includes the NASA J31 Mission Summaries.
    • MILAGRO
    final completed
    This dataset contains flight track imagery from the NASA Langley B200 aircraft collected during the MILAGRO field project.
    • MILAGRO
    final 1.0
    2008-10-07
    This dataset contains lidar imagery from the NASA Langley B200 aircraft collected during the MILAGRO field project.
    • MILAGRO
    final 1.0
    2008-10-07
    This dataset provides a link to the NASA Langley DC3 Merged Aircraft Data Archive. It includes merges for the NASA DC-8, DLR Falcon, and NSF/NCAR GV HIAPER aircraft.
    • DC3
    final completed
    This data set contains the Convair flight track overlays provided by NASA LaRC during the ICICLE (In-Cloud ICing and Large-drop Experiment) field campaign conducted from 28 January to 7 March 2019. The tracks are time stamped and color coded as...
    • ICICLE
    final 1.0
    2019-10-14
    This data set contains the satellite imagery provided by NASA LaRC during the ICICLE (In-Cloud ICing and Large-drop Experiment) field campaign conducted from 25 January to 8 March 2019. These images are tarred by day. If you choose to use these in a...
    • ICICLE
    final 1.0
    2019-10-14
    This data set contains the VISST Cloud Products provided by NASA LaRC during the ICICLE (In-Cloud ICing and Large-drop Experiment) field campaign conducted from 24 January to 8 March 2019. These images are tarred by day. If you choose to use these in a...
    • ICICLE
    final 1.0
    2019-10-14
    This dataset provides a link to the NASA JPL Orbiting Carbon Observatory-3 (OCO-3) website.
    • CHEESEHEAD
    final completed
    This dataset links to supplemental information for the project.
    • MILAGRO
    final completed
    This dataset contains cloud retrieval data from the Himawari satellite during SOCRATES. These data were produced by the NASA Langley’s Satellite ClOud and Radiation Property retrieval System (SatCORPS)  group. The retrievals include broadband shortwave...
    • SOCRATES
    final 2.2
    2020-10-06
    A link to the NASA SATCORPS satellite support website for the High Ice Water Content (HIWC) - Darwin Campaign. The site includes a variety of satellite and cloud products from MTSAT during the campaign
    • HAIC-HIWC
    final completed
    This dataset provides a link to the NASA SatCORPS HIWC-2015 RADAR satellite product website.
    • HIWC-RADAR-2015
    final completed
    A link to the NASA SATCORPS satellite imagery and products for the High Ice Water Content (HIWC) 2015 Cayenne Campaign
    • HAIC-HIWC_2015
    final completed
    This dataset provides a link to the NASA/LaRC Satellite Support for the High Ice Water Content (HIWC) Radar 2018 Campaign.
    • HIWC-RADAR-2018
    final completed
    This is Model data from the NASA Seasonal-Interannual Prediction Project (NSIPP) for the NAME Model Assessment Project (NAMAP). NCAR/EOL has performed no Quality Control on this dataset.
    • NAMAP
    final 1.0
    2008-05-29
    This dataset provides a link to the NASA Suomi National Polar-orbiting Partnership (NPP) website.
    • CHEESEHEAD
    final completed
    A link to the NASA Earthdata Portal MODIS datasets from the Terra and Aqua satellites.
    • RICO
    • NAME
    • TORERO
    • RAINEX
    • T-REX
    • LPB
    • IHOP_2002
    • VOCALS
    • BAMEX
    • SALLJEX
    • CHEESEHEAD
    • EPIC
    • DEEPWAVE
    final completed
    A link to the NASA Global Tropospheric Experiment (GTE) website. The GTE campaigns (1983 - 2001) collected a rich set of data records of atmospheric observations, and on many occasions were used as baselines for subsequent campaigns. The fundamental...
    • VOCALS
    final completed
    One seconed resolution merged data from instrumentation that was flown on the NASA WB-57 aircraft for the ACCLIP deployment. The ACCLIP flights were based out of Osan Air Base in South Korea and the flights were over the western Pacific Ocean region...
    • ACCLIP
    preliminary
    One minute resolution merged data from instrumentation that was flown on the NASA WB-57 aircraft for the ACCLIP deployment. The ACCLIP flights were based out of Osan Air Base in South Korea and the flights were over the western Pacific Ocean region...
    • ACCLIP
    preliminary
    The AWAS-based merger of the data from the instrumentation that was onboard the NASA WB-57 aircraft for the ACCLIP deployment. The AWAS (Advanced Whole Air Sampler) data are the base data for this dataset leading to a variable sampling interval based...
    • ACCLIP
    final completed
    A link to NASA Worldview which provides the capability to interactively browse global, full-resolution satellite imagery and then download the underlying data.
    • RICO
    • NAME
    final completed
    This data set contains NASA/DC-8 Differential Absorption Lidar (DIAL) Measuring Tropospheric Ozone Profiles and High Spectral Resolution Lidar (HSRL) Data collected during the Deep Convective Clouds and Chemistry Experiment (DC3) from 14 May 2012...
    • DC3
    final 1.0
    2013-08-05
    The ACE-Asia Model Chemistry NASA/GIT GO-CART Aerosol Imagery (gif) is available online. This data was collected during the ACE-Asia intesive observing period March 31, 2001 thru May 3, 2001.
    • ACE-ASIA
    final 1.0
    2001-11-13
    This dataset links to supplemental information for the project.
    • NAME
    final completed
    NASA/KSC wind profiler primarily operated during CaPE in standard 3-moment mode at a range of 2 to 18.6 km and 50 m vertical resolution. Data consists of vertical profiles of return power, radial velocity and moment variance. Other research modes (i.e....
    • CaPE
    This dataset links to supplemental information for the project.
    • DYNAMO
    final completed
    This data set contains the data from the NASA/MSFC Lightning Mapping Array (LMA) that was located around the Cordoba, Argentina region during the RELAMPAGO (Remote sensing of Electrification, Lightning, And Meso-scale/micro-scale Processes with...
    • RELAMPAGO
    This dataset links to supplemental information for the project.
    • PACS
    final completed
    This dataset contains a GMT cruise track from the Nathaniel B. Palmer (NBP) data acquisition system on board the 2003 SBI Survey Cruise. The file contains the longitude and latitude at one-minute intervals.
    • SBI
    1.0
    2007-11-05
    This data set contains the Joint Global Ocean Flux study (JGOFS) data set from the Nathaniel B. Palmer (NBP) data acquisition system onboard the 2003 SBI Survey Cruise. The data set is divided into daily files each containing 22 columnar fields in text...
    • SBI
    1.0
    2007-11-05
    This data set contains the Marine Geoscience Data System (MGD77) data set from the Nathaniel B. Palmer (NBP) data acquisition system onboard the 2003 SBI Survey Cruise. The data set is divided into daily files in a space delimited columnar format. Data...
    • SBI
    1.0
    2007-11-05
    This data set contains PC02 measurements from the Nathaniel B. Palmer (NBP) data acquisition system on the 2003 SBI Survey Cruise. The NBP carries the Lamont-Doherty Earth Observatory's (LDEO) pC02 system. These data contain the pC02 instrument's data...
    • SBI
    1.0
    2007-11-05
    This data set contains the shipboard Acoustic Doppler Current Profiler (ADCP) system measurements from the Nathaniel B. Palmer (NBP) data acquisitions systems on the 2003 SBI Survey Cruise. The ADCP system measures currents in the depth range from abut...
    • SBI
    1.0
    2007-11-05
    This dataset contains the results of the Nathaniel B. Palmer (NBP) ship data acquisition system data logger from the SBI Palmer Cruise NBP0304A. All data have been compressed using Unix gzip and placed on a DVD-ROM written in IOS9660 level-1 format.
    • SBI
    1.0
    2008-12-17
    A link is provided to the National Data Buoy Center (NDBC) buoy and coastal data archive
    • RICO
    • OHHI
    • VOCALS
    • T-PARC
    • ITOP
    • PACS
    final completed
    This data set contains 1-hour resolution surface meteorological data from the National Data Bouy Center (NDBC) stations located across the Great Lakes. This data set covers the period from 1 May through 31 July 2003. The data are in ASCII format.
    • BAMEX
    final 1.0
    2008-10-07
    This data set contains hourly resolution surface meteorological and oceanographic data and 10 minute resolution wind data from the NOAA National Data Buoy Center moored buoy and Coastal Marine (C-MAN) networks along the Gulf of Mexico and Southeastern...
    • RAINEX
    final 1.0
    2008-10-07
    This dataset provides a link to the National Geodetic Survey website.
    • DYNAMO
    final completed
    This dataset includes the following from the National Hurricane Center (NHC): aviation advisories, public advisories, wind speed probabilities, hurricane discussions, watches and warnings, POD reports, tropical cyclone discussions, tropical weather...
    • PREDICT
    final 1.0
    2021-09-30
    This dataset contains National Hurricane Center Composite Tracks Forecast Products that were taken during the Pre-Depression Investigation of Cloud-systems in the Tropics (PREDICT) experiment. The PREDICT project took place during the summer and fall...
    • PREDICT
    final 1.0
    2021-09-30
    A link to the NIWA New Zealand National Climate Database. The climate database holds data from about 6500 climate stations which have been operating for various periods since the earliest observations were made in the year 1850. The database continues...
    • DEEPWAVE
    final completed
    A link is provided to the Multi-Resolution Land Characteristics (MRLC) consortium National Land Cover Database (NLCD). The NLCD provides nationwide data on land cover and land cover change at a 30m resolution with a 16-class legend based on a modified...
    • OHHI
    final completed
    This data set contains the cloud-to-ground and in-cloud lightning data from the National Lightning Detection Network (NLDN).
    • TORUS_2019
    • DELTA
    • LIFT_2024
    • PERiLS_2022
    • Operational
    • PERiLS_2023
    • TORUS-LItE
    • ICECHIP
    • LEE
    • BACS
    • Meso18-19
    • TORUS_2022
    final 1.0
    2019-01-30
    Lightning stroke data from the National Lightning Detection Network (NLDN) for particular periods during the IMPACTS_2020 campaign. Data are available for 11-13, 17-19, 24-26, and 31 January as well as 1-8, 12-14, 18-19, and 24-28 February 2020.
    • IMPACTS_2020
    final 1.0
    2022-09-29
    Lightning stroke data from the National Lightning Detection Network (NLDN) for particular periods during the IMPACTS_2022 campaign. Data are available for 14-15, 17-20, and 28-31 January as well as 4-5, 12-13, 17-20, and 24-26 February 2022.
    • IMPACTS_2022
    final 1.0
    2022-09-29
    Lightning stroke data from the National Lightning Detection Network (NLDN) for the IMPACTS 2023 campaign.
    • IMPACTS_2023
    final 1.0
    2023-08-31
    This dataset provides a link to the DC-3 Field Catalog Operational Products section which includes National Lightning Detection Network (NLDN) imagery.
    • DC3
    final completed
    This password protected dataset contains the National Lightning Detection Network (NLDN) data for a 100km radius of Mt. Lemmon during the CuPIDO project period (July-August 2006). These data contain NLDN cloud-to-ground strokes and NLDN LF cloud event...
    • CuPIDO
    final 1.0
    2007-08-23
    The GCIP/GIST National Radar Precipitation Composite contains radar derived percipitation values over the CONUS. These images were prepared at the NASA/Marshal Space Flight Center. One image per day at 12Z is available as a data browse product.
    • GCIP/GIST
    final 1.0
    1996-10-16
    The radiation data are derived from the National Solar Radiation Data Base (NSRDB) hourly data in synoptic format, and provided by the National Climatic Data Center (NCDC). They contain hourly global horizontal solar irradiance, direct normal solar...
    • ARCSS
    1.0
    2009-04-29
    This data set contains hourly resolution surface meteorological and oceanographic data from the National Water Level Observation Network(NWLON) which is operated by the National Ocean Service Center for Operational Oceanographic Products and Services ...
    • RAINEX
    final 1.0
    2006-06-02
    This is one of the upper air data sets developed for the Stratosphere-Troposphere Analyses of Regional Transport 2008 (START08). This data set includes a total of 11999 high vertical resolution soundings from the 70 National Weather Service rawinsonde...
    • START08
    final 1.0
    2009-12-18
    This is one of the upper air data sets developed for the THORPEX Pacific Asian Regional Campaign (T-PARC 2008). This data set includes 2590 high vertical resolution (6-second) MicroArt soundings from the eight National Weather Service (NWS) rawinsonde...
    • T-PARC
    final 1.0
    2010-04-01
    The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) routinely releases radiosondes two times per day (00 and 12 UTC) and does occasional special releases at other times of day (usually 18 UTC) from sites across the...
    • CONTRAST
    final 1.0
    2014-06-03
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled, Tropical Convection Intensification and Structure...
    • TCI
    final 1.0
    2017-12-06
    This is one of the upper air data sets developed for the Verification of the Origins of Rotation in Tornadoes Experiment 2 (VORTEX2). This data set includes 1986 high vertical resolution (1-second) Radiosonde Replacement System (RRS) soundings from 16...
    • VORTEX2
    final 1.0
    2010-11-03
    This is one of the upper air data sets developed for the Impact of Typhoons on the Ocean in the Pacific (ITOP) 2010. This data set includes 976 high vertical resolution (6-second) MicroArt soundings from the six (6) National Weather Service (NWS)...
    • ITOP
    final 1.0
    2011-04-27
    This is one of the upper air data sets developed for the Pre-Depression Investigation of Cloud-systems in the Tropics (PREDICT) 2010 project. This data set includes 841 high vertical resolution (1-second) Radiosonde Replacement System (RRS) soundings...
    • PREDICT
    final 1.0
    2021-09-29
    This is one of the upper air data sets developed for the Ice in Clouds Experiment - Tropical (ICE-T) 2011 project. This data set includes 60 high vertical resolution (1-second) Radiosonde Replacement System (RRS) soundings from National Weather Service...
    • ICE-T
    final 1.0
    2011-11-02
    This is one of the upper air data sets developed for the Deep Convective Clouds and Chemistry Project (DC3) 2012 project. This data set includes 5520 high vertical resolution soundings from 53 1-second National Weather Service (NWS) rawinsonde stations...
    • DC3
    final 1.0
    2012-12-04
    The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) routinely releases radiosondes two times per day (00 and 12 UTC) and does occasional special releases at other times of day (usually 18 UTC) from sites across the...
    • MPEX
    final 1.0
    2013-11-18
    The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) routinely releases radiosondes two times per day (00 and 12 UTC) and does occasional special releases at other times of day (usually 18 UTC) from sites across the...
    • SAS
    final 1.0
    2013-12-03
    The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) routinely releases radiosondes two times per day (00 and 12 UTC) and does occasional special releases at other times of day (usually 18 UTC) from sites across the...
    • OWLeS
    final 1.0
    2014-05-28
    The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) routinely releases radiosondes two times per day (00 and 12 UTC) and does occasional special releases at other times of day (usually 18 UTC) from sites across the...
    • WINTER
    final 1.0
    2015-08-19
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled PECAN NWS soundings released at 22 sites throughout...
    • PECAN
    final 1.0
    2015-12-15
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled VORTEX-SE_2016 NWS soundings released at 10 sites...
    • VORTEX-SE_2016
    final 1.0
    2016-07-07
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States.  This data set includes the quality controlled VORTEX-SE_2017 NWS soundings released at 10 sites...
    • VORTEX-SE_2017
    final 1.0
    2017-06-15
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled SNOWIE NWS soundings released at 15 sites...
    • SNOWIE
    final 1.0
    2017-07-13
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled NWS soundings released at nine sites around Salt...
    • IDEAL
    final 1.0
    2018-01-17
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled VORTEX-SE_2018 NWS soundings released at 11 sites...
    • VORTEX-SE_2018
    final 1.0
    2018-07-09
    This data set includes the quality controlled GRAINEX NWS soundings released at nine sites throughout the Upper Midwestern United States during the GRAINEX field phase (30 May - 31 July 2018). Two stations in the region were only available at mandatory...
    • GRAINEX
    final 1.0
    2018-11-20
    This data set includes the quality controlled GTS soundings for two High Ice Water Content (HIWC) Radar 2018 observational periods and regions.  The first was the southeastern United States for the period of 29 July to 13 August 2018 and the second was...
    • HIWC-RADAR-2018
    final 1.0
    2018-11-20
    This data set includes the quality controlled NWS soundings released at five sites throughout the Midwestern United States during the SAVANT (Stable Atmospheric Variability and Transport) field phase (15 September to 15 November 2018). One station in...
    • SAVANT
    final 1.0
    2019-01-17
    This data set includes 1726 quality controlled NWS (National Weather Service)  soundings released at 14 sites throughout the western United States during the  WE-CAN (Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption and  Nitrogen)...
    • WE-CAN
    final 1.0
    2019-06-18
    This data set includes 866 quality controlled NWS (National Weather Service)  soundings released at ten sites throughout the western Great Lakes region  during the ICICLE (In-Cloud Icing and Large-Drop Experiment)  field phase (26 January to 9 March 20...
    • ICICLE
    final 1.0
    2019-06-25
    This data set includes 4914 quality controlled NWS (National Weather Service) soundings released at thirteen sites throughout the southeastern United States during the Verification of the Origins of Rotation in Thunderstorms Experiment-Southeast ...
    • Meso18-19
    final 1.0
    2019-07-02
    This data set includes 1343 quality controlled NWS (National Weather Service) soundings released at eighteen sites throughout the plains region of the central United States during the Targeted Observation by Radars and UAS of Supercells 2019 (TORUS_201...
    • TORUS_2019
    final 1.0
    2019-08-22
    This data set includes the quality controlled NWS soundings released at seven sites throughout the northern plains of the United States during the Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of...
    • CHEESEHEAD
    final 1.0
    2019-11-11
    High vertical resolution radiosonde data from National Weather Service radiosonde stations within and near the Cold Fog Amongst Complex Terrain (CFACT) domain. Three stations are included in this dataset: Salt Lake City UT (KSLC), Boise ID (KBOI), and...
    • CFACT
    final 1.0
    2022-05-18
    High vertical resolution radiosonde data from National Weather Service radiosonde stations within and near the WINTRE-MIX domain are included in this dataset. Four stations are included in this dataset: Albany NY (KALY), Buffalo NY (KBUF), and Gray ME ...
    • WINTRE-MIX
    final 1.0
    2022-06-09
    High vertical resolution radiosonde data from National Weather Service radiosonde stations within and near the TORUS_2022 domain are included in this dataset. High resolution (1 second vertical levels) are included from 17 stations and three stations...
    • TORUS_2022
    final 1.0
    2022-08-16
    High vertical resolution radiosonde data from National Weather Service radiosonde stations within and near the TORUS-LItE (Targeted Observation by Radars and UAS of Supercells - Left-flank Intensive Experiment) domain. High resolution (1 second...
    • TORUS-LItE
    final 1.0
    2023-07-17
    The National Weather Service (NWS) routinely releases radiosondes at 00 and 12 UTC with occasional special releases at sites throughout the United States. This data set includes the quality controlled Tropical Cyclone Intensity (TCI) NWS soundings...
    • TCI
    • HIWC-RADAR-2015
    final 1.0
    2016-02-16
    This data set includes the quality controlled HIWC Radar 2015 NWS soundings  released at 20 sites throughout the southeastern United States and  Puerto Rico during the HIWC Radar 2015 field phase (9-25 August 2015).  Nine stations in the region were...
    • HIWC-RADAR-2015
    final 1.0
    2018-11-20
    This is one of the upper air data sets developed for the Dynamics of the Madden-Julian Oscillation (DYNAMO) 2011-2012 project. This data set includes 903 high vertical resolution soundings from the National Weather Service (NWS) rawinsonde stations at...
    • DYNAMO
    final 1.0
    2012-01-18
    High vertical resolution radiosonde data from National Weather Service radiosonde stations within and near the Sundowner Winds Experiment (SWEX) domain. Three stations are included in this dataset: San Diego CA (KNKX), Oakland CA (KOAK), and Las Vegas...
    • SWEX
    final 1.0
    2022-08-01
    This is one of the upper air data sets developed for the Ice in Clouds Experiment 2007 (ICE-L 2007). This data set includes 487 high vertical resolution (1-second) Radiosonde Replacement System (RRS) soundings from the four National Weather Service ...
    • ICE-L
    final 1.0
    2009-10-02
    This is one of the upper air data sets developed for the Profiling of Winter Storms (PLOWS) project. This data set includes 829 high vertical resolution (1-second) Radiosonde Replacement System (RRS) soundings from the seven National Weather Service ...
    • PLOWS
    final 1.0
    2010-07-20

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    This material is based upon work supported by the NSF National Center for Atmospheric Research, a major facility sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the U.S. National Science Foundation.