 |
| Titel |
Multi-resolution analysis of high density spatial and temporal cloud inhomogeneity fields from HOPE campaign |
| VerfasserIn |
Bomidi Lakshmi Madhavan, Hartwig Deneke, Andreas Macke |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250109629
|
| Publikation (Nr.) |
 EGU/EGU2015-9555.pdf |
|
|
|
|
|
| Zusammenfassung |
| Clouds are the most complex structures in both spatial and temporal scales of the Earth’s
atmosphere that effect the downward surface reaching fluxes and thus contribute to large
uncertainty in the global radiation budget. Within the framework of High Definition Clouds
and Precipitation for advancing Climate Prediction (HD(CP)2) Observational Prototype
Experiment (HOPE), a high density network of 99 pyranometer stations was set up around
Jülich, Germany (~ 10 x 12 km2 area) during April to July 2013 to capture the small-scale
variability in cloud induced radiation fields at the surface. In this study, we perform
multi-resolution analysis of the downward solar irradiance variability at the surface from
the pyranometer network to investigate the dependence of temporal and spatial
averaging scales on the variance and spatial correlation for different cloud regimes.
Preliminary results indicate that correlation is strongly scale-dependent where as the
variance is dependent on the length of averaging period. Implications of our findings
will be useful for quantifying the effect of spatial collocation while validating the
satellite inferred solar irradiance estimates, and also to explore the link between
cloud structure and radiation. We will present the details of our analysis and results. |
|
|
|
|
|
|