The DWD ceilometer and lidar mapping

The DWD ceilometer and lidar mapping
September 1st, 2014
[email protected]
The interactive map shows ceilometers and lidars world-wide. Clicking on an
icon will show the station name and the instrument type. Needle markers with
green inner symbols (squares, diamonds or circles) denote stations offering
further information. Clicking on those icons opens either a quick look of visualized raw data or offers a link to an external web page with further station
information.
All quick looks from the German ceilometer network, operated by DWD, show
uncalibrated but range-corrected backscatter intensities as a function of
height (y-axis) and time of the day (x-axis). The data has not been subject of
extensive quality control procedures and is only available as image representation. Data is provided as is. It is the responsibility of users to carefully consider date and time of provided plots for further applications.
All quick look images and stations information from third parties outside
DWD’s responsibility are provided as is and fall under the responsibility of the
contributor.
Navigation:
Use the arrow symbols in the upper left corner or press the left mouse button
for moving the map to east/west, south/north. Alternatively, press and hold
the left mouse button and move the mouse inside the map. Use the
plus/minus symbols below or use a mouse wheel (if present) to zoomin/zoom-out the map, respectively.
Use the plus symbol in the upper right corner to get access to more
data/additional information that can be overlaid across the map. Once the
menu has opened set a tick mark by mouse click (left mouse button) into the
square boxes. The following additional products are available:
SF-Product: The 24 hours accumulated precipitation over Germany and
neighbouring countries derived from the German rain radar network operated
by DWD.
Locations, Boundaries and Rivers: Show all these elements, yes/no
Ceilometer: Show all available ceilometers and Lidar stations, yes/no
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Cloud-top height MET10: Cloud-top height above sea level derived from
METEOSAT/SEVIRI and available as a semi-transparent layer. A slider appearing in the lower left corner below the map allows customization of the image transparency. There is another link provided that opens the corresponding colour legend (red = low-level clouds, blue/white = high-level clouds,
green = unprocessed, no cloud-top information).
Cloud mask MET10 (EUMETSAT): Cloud coverage derived from
METEOSAT/SEVIRI, provided by EUMETSAT and available every 3 hours as
a semi-transparent layer. A slider appearing in the lower left corner below the
map allows customization of the image transparency.
Trajek_MOHP_GME_xx: Backward trajectories (7 days) at the Met. Observatory Hohenpeissenberg/Germany calculated by DWD’s global numerical
weather prediction model GME. Backward trajectories allow the trace-back of
air masses from a given geographical position. Suffixes lt/ut/st denote trajectories in the lower troposphere (lt), the upper troposphere (ut) and the stratosphere (st). The temporal resolution of trajectories is 1 hour. Three trajectories per height regime are displayed (pink = lower, yellow = middle, sea green
= higher). Trajectories are available for heights in the lower troposphere with
start levels below 5000 m, the upper troposphere/lower stratosphere region
below 10000 m and the stratosphere above 10000 m, respectively. See the
terms of reference using trajectories.
Volcano_Trajek_GME_volcano_name_xx: Forward trajectories (7 days) released at the geographical position of Europe’s most important volcanoes.
Forward trajectories allow the prediction of the movement of air masses from
a given geographical position. Trajectories are calculated by DWD’s global
numerical weather prediction model GME. Suffixes lt/ut denote trajectories in
the lower troposphere (lt) and the upper troposphere (ut). The temporal resolution of trajectories is 1 hour. Three trajectories per height regime are displayed (pink = lower, yellow = middle, sea green = higher). Trajectories are
available for release heights in the lower troposphere with start levels at 1500
m (Mt. Etna 2500 m), 3000 m and 5000 m and the upper troposphere/lower
stratosphere region with release levels at 7500 m, 10000 m and 12500 m,
respectively. See the terms of reference using trajectories.
Download:
- The ceilometer map as Google-Earth kml-file.
- Tutorial – Volcanic ash episodes (April/May 2010)
o A kml-formatted animation related to the outbreak of the
Eyjafjallajökull/ Iceland and showing the spatio-temporal distribution of volcanic ash clouds over Europe. We provide synoptical in-2-
formation, forecast maps of the London Volcanic Ash Advisory
Centre, backscatter profiles of lidars and ceilometers at selected
stations in Europe and trajectory calculations at the Hohenpeißenberg Meteorological Observatory.
- Tutorial – Saharan dust episodes (2011)
o A kml-formatted animation of 6 Saharan dust events over Central
Europe in 2011. We provide synoptical information, predicted dust
concentrations provided by the SDS-WAS (WMO Sand and Dust
Storm Warning Advisory and Assessment System) and the
ECMWF (European Centre for Medium Range Weather Forecast)
in the framework of MACC (Monitoring Atmospheric Composition
and Climate - EU- FP7 Project), backscatter profiles of lidars and
ceilometers, and trajectory calculations at selected stations in
Europe.
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Symbols
• Instrumental families and instruments from the same manufacturer
are identified by symbol colours. See exemplarily the blue symbols used for the different Vaisala instruments.
• Stations for which instrumental raw data is stored but is not available on-line, are marked by red circles , squares , and diainside the needle symbols.
monds
• Stations storing instrumental raw data and providing links to quick
looks and/or web pages are marked by green circles , squares ,
and diamonds
inside the needle symbols.
• Stations having neither a link to quick looks or web pages nor
storing instrumental raw data are marked by white circles ,
squares , and diamonds
inside the needle symbols.
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Impulsphysik LD12 – cyan square (no storage, link available, raw data stored)
Impulsphysik LD40 – cyan diamond (no storage, link available, raw data stored)
Vaisala AW11 – cyan circle (no storage, link available, raw data stored)
,
,
Vaisala CT12 – ltblu circle (no storage, link available, raw data stored)
Vaisala CTC21 – ltblu square (no storage, link available, raw data stored)
Vaisala CT75K – ltblu diamond (no storage, link available, raw data stored)
Vaisala CT25K – blue circle (no storage, link available, raw data stored)
Vaisala CL31K – blue square (no storage, link available, raw data stored)
Vaisala CL51K – blue diamond (no storage, link available, raw data stored)
Jenoptik CHM15K – green circle (no storage, link available, raw data stored)
Jenoptik CHM15KX – green diamond (no storage, link available, raw data stored)
Eliasson CBME80 – purple circle (no storage, link available, raw data stored)
Telvent Cirrus 100 – purple square (no storage, link available, raw data stored)
MTECH 8200-CHS – purple diamond (no storage, link available, raw data stored)
LIDARs – yellow diamond (no storage, link available, raw data stored)
unknown –white circle (no storage, link available, raw data stored)
Networks – red with letters inside (no storage, link available, raw data stored)
A = AD-Net, C = CIS-Linet, E = EARLINET, L = Leonet, M = MPLnet, N = NDACC, P = PollyNET
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