New Data Sets and Related News
| April 2008 | Princeton University Global Meteorological Forcing Data Set for Land Surface Modelling. A global 50-yr (1948-2000) data set of meteorological forcings derived by combining reanalysis with observations is available at 2.0-degree and 1.0-degree spatial resolution and daily and 3-hourly temporal resolution. The data set description was published in 2006 in J. Climate and the data are available online in netcdf format from http://hydrology.princeton.edu/data.php and the UCAR DSS at: http://dss.ucar.edu/datasets/ds314.0 The data set is currently being updated to the end of 2007 and these data will be available from the same locations in the next few months. Sheffield, J., G. Goteti, and E. F. Wood, 2006: Development of a 50-yr high-resolution global data set of meteorological forcings for land surface modeling, J. Climate, 19 (13), 3088-3111.
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| Sep 2007 | The CloudSat Data Processing
Center has released, to the General Science Community, the R04 2B-CLDCLASS
product, and the R04 ECMWF-AUX and MODIS-AUX products. Watch the DPC website for news and
current status of subsequent R04 product releases. We anticipate the release, to the
CloudSat Science Team of the R04 2B-CWC-RO and 2B-FLXHR products by the end of this month,
with releases to the general science community shortly thereafter. The on-line product
specifications for these updated products are located at: http://www.cloudsat.cira.colostate.edu/dataSpecs.php.
To access the released data, use the DPC data ordering system interface found at: http://cloudsat.cira.colostate.edu/data_dist/OrderData.php.
If you have any questions concerning the ordering process, contact the DPC at cloudsat@cira.colostate.edu.
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| Aug 2007 | NASA's Global Land Data Assimilation System (GLDAS) data
sets are now available via NASA/GSFC's Data and Information Services Center at http://disc.gsfc.nasa.gov/hydrology/hydro_get_data.shtml GLDAS data products consist of a time series of land surface state (e.g., soil moisture and surface temperature) and flux (e.g., evaporation and sensible heat flux) parameters simulated by four land surface models (CLM, MOSAIC, NOAH and VIC). The 1.0 degree resolution data range from 1979 to present for the four models. The 0.25 degree data cover 2000 to present from the NOAH model. These products can be downloaded from the access link below. Temporal averaging and spatial subsetting will soon be available through an automated data server.
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| Aug 2007 | The CloudSat Data Processing Center (DPC) has released the
reprocessed (R04) version of the Level 1B, 2B-GEOPROF and the 2B-GEOPROF-Lidar products.
These products are now available to the General Science Community via the CloudSat Data
ordering system. The reprocessed 2B-GEOPROF products were generated using the new level 1B
algorithm that has an improved clutter removal scheme for the detection of low cloud over
oceans.
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| June 2007 | New
CERES products: Clouds and Radiative Swath (CRS): CER_CRS_Aqua-FM3-MODIS_Edition2A CER_CRS_Aqua-FM4-MODIS_Edition2A Monthly
Gridded Radiative Fluxes and Clouds (FSW): For more information about CERES products, see: http://eosweb.larc.nasa.gov/PRODOCS/ceres/table_ceres.html
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| May 2007 | Data and documentation from the first Intercomparison of Radiation
Codes in Climate Models (ICRCCM-1) are now included at the ARM Archive. This
1980s climate modeling project eventually led to the creation of the ARM Program. Included
in this repository are all available correspondences, publications, reports, workshops and
meetings, ICRCCM test cases, longwave and shortwave tabular results, one set of
single-model results (ATRAD), and longwave line-by-line results. To learn more about ICRCCM, read the Initial Concept section at: http://www.arm.gov/about/history.stm or go
directly to the ARM Archive at http://iop.archive.arm.gov/arm-iop/0special-data/ICRCCM/
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| April 2007 | Surface
Wind Fields. A new near real time 6-hourly surface wind analysis for the
global oceans with 0.25 degree resolution is now available for the period from April 1,
2004 to present. The product integrates satellite observations and atmospheric model
analyzes surface meteorology, and is developed at the Institut Francais pour la Recherche
et l'Exploitation de la MER (IFREMER) under the European Integrated Project MERSEA. The data, documentation, and useful
information can be found at http://www.ifremer.fr/cersat/facilities/mwf-blended-nrt/
or at http://www.mersea.eu.org/forcing-F/1-forcingfield-blended.html.
Data include wind speed, zonal and meridional components, wind stress and the related
components. Contacts : A. Bentamy (abderrahim.bentamy"at"ifremer.fr)
and D. Croize Fillon (denis.croize.fillon"at"ifremer.fr). Turbulent Fluxes. A 15-year data set (1992 –
2006) of turbulent flux fields at global scales over the oceans (excluding sea ice areas)
with a spatial resolution of 1 degree, and weekly and monthly temporal resolutions between
80°S and 80°N are available at Ifremer via ftp upon request (Contact: Abderrahim.Bentamy@ifremer.fr). For more
information about the data set, see: http://cersat.ifremer.fr/science/air_sea_interaction/retrieving_turbulent_fluxes_from_satellite |
| April 2007 | New
PI Product from Tim Hume and Christian Jakob, "Forcing Data for the ARM
Tropical Western Pacific sites of Manus and Nauru for use in SCMs or CRMs."
Forcing data, suitable for use with single column models and cloud resolving models have been derived from numerical weather prediction analyses for the Atmospheric Radiation Measurement (ARM) Tropical Western Pacific sites of Manus Island and Nauru. As described in Hume_and_Jakob_2005, four separate forcing data sets were generated from ERA-40 reanalyses, operational ECMWF analyses, the Bureau of Meteorology GASP model and NCEP reanalyses, respectively. The data cover the complete 1999-2000 period in 6-hour time increments. PI Products web page: http://www.arm.gov/data/pi_products.stm
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| March 2007 | DLR-ISIS data set derived
from ISCCP cloud data via radiative transfer calculations. The Institute of
Atmospheric Physics of the German Aerospace Center (DLR)-Irradiance at the Surface derived
from ISCCP (ISIS) cloud data data set was developed to study the long-term variability of
direct normal irradiance for solar energy applications (Lohmann et al. 2006, Lohmann et
al. 2007). The ISCCP FD input data set was used as the source. The DLR-ISIS
data set provides a time series of direct, diffuse and global irradiance, which allows the
separate study of all three irradiance components, as well as the analysis of energy
shifts between them (e.g., caused by changes in the atmospheric composition). Comparisons
to DLR-ISIS irradiance components can deliver important clues to errors in the calculation
of irradiances in climate models. The radiative transfer calculations were performed twice
for the complete DLR-ISIS data set, once with and once without stratospheric aerosol from
volcanic eruptions. Therefore, the data set allows the study of the effects of volcanic
eruptions on all three irradiance components as well as the analysis of long irradiance
time series that are not polluted by volcanic aerosols. Since clouds are the dominant
influence for solar irradiance at the surface, any weakness in the cloud data will cause
errors in the irradiance data. Also, tropospheric aerosol was only included as monthly
climatological values. Use of the DLR-ISIS data for derivation of long-term trends is
therefore not recommended. The DLR-ISIS data is provided freely for research purposes. For
further inquiries please contact Bernhard.Mayer"at"dlr.de.
Lohmann, S., Schillings, C., Mayer, B., Meyer, R. (2006): Long-term variability of solar direct and global radiation derived from ISCCP data and comparison with reanalysis data. Solar Energy, 80, 1390-1401 Lohmann, S., Riihimaki, L., Vignola, F., Meyer, R. (2007): Trends in direct normal irradiance in Oregon: Comparison of surface-based measurements and ISCCP derived irradiance. Geophys. Res. Lett., 34.
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| Jan 2007 | New ARM data product - MWRRET The Cloud Property Working Group has recently endorsed a new data set that provides improved retrievals of precipitable water vapor (PWV) and liquid water path (LWP) from the ARM microwave radiometers (MWRs). The algorithm was developed by ARM scientists and is called "MWRRET". This algorithm is currently being implemented in the ARM data system as a value added procedure (VAP) to provide these improved retrievals routinely. Several years of data from the various ARM sites have been processed and are currently available at http://iop.archive.arm.gov/arm-iop/0pi-data/turner/.
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| Sept 2006 | The
monthly GPCP Version
2 Satellite-Gauge Combined Precipitation Product is designed to cover the
entire globe, combining observations from the international constellation of
precipitation-related satellite data sources with precipitation gauge analyses for the
entire record of continuous satellite observations. The record begins in 1979 and
continues to be extended as new months occur. |
| Sept 2006 | The Lightning
Imaging Sensor (LIS) Science Team released of Version 2.2 of the
LIS/OTD 11-Year Climatology data set. This release includes updates to the 6
existing datasets and the addition of four new data sets. The data sets have been updated
through December 2005, except for the time series data sets which have been updated
through April 2006. These data sets can be ordered from the Global Hydrology Resource
Center (GHRC) using HyDRO or
downloaded from the Thunder
website. You can find more information about these data sets as well as others
at http://ghrc.nsstc.nasa.gov/. |
| May 2006 | For a comprehensive summary of the International Satellite Cloud Climatology Project (ISCCP) data products, click here. |
| May 2006 | Water and Energy Balance Variables Output from the Global Land Data Assimilation System (GLDAS) are available. These include a set of a global time series of land surface water and energy cycle variables simulated by GLDAS (Rodell et al., 2004) driving the Noah land surface model (LSM) (Ek et al., 2003). GLDAS products support weather and climate model initialization studies, water resources and other applications, and water and energy cycle investigations. For more information, click here. |
| May 2006 | The Radiative Flux Assessment (RFA) Project has launched its web site at http://gewex-rfa.larc.nasa.gov/. This GEWEX Radiation Panel project will provide a forum for consistent analysis of long-term radiative flux products, primarily top-of-atmosphere and surface fluxes, to establish a foundation for better global radiation budget analysis. |
| April 2006 | 2nd Global
Soil Wetness Project (GSWP-2) Multi-Model Analysis (MMA) Product. The GSWP-2
MMA is the first global (excluding Antarctica) gridded multi-model analysis of
land surface state variables and fluxes. Simulations from 13 land models from five nations
have gone into producing the analysis. The resulting analysis includes multi-model means
and standard deviations on the monthly time scale, as well as daily data for the 10-year
period 1986-1995. For more information about the GSWP-2 MMA and how to access the product,
click here. |
| March 2006 | The NAME
upper air composites released in February 2006 for the entire NAME Field Phase (1
June 2004-30 Sept 2004) are located at: Upper Air Multi-Network "Composite" (5-mb Level): http://www.joss.ucar.edu/cgi-bin/codiac/dss?82.157 Upper Air Multi-Network "Composite" (Highest Resolution): http://www.joss.ucar.edu/cgi-bin/codiac/dss?82.143 The Hourly and Daily Precipitation "Composites" (including associated station lists) for the 2004 NAME Field Phase (1 June 2004-30 Sept 2004) are available via the NAME Master Data set List at: http://www.joss.ucar.edu/name/dm/archive/ . There are 38,764 stations included in the final NAME 2004 Station List and this file is linked under the Cross-Platform Category of the Master Dataset List, or directly at: http://www.joss.ucar.edu/cgi-bin/codiac/dss?82.179 |