Astrometeorology

A ~1500-year periodicity has been reported in paleoclimate proxy data and claims have been made that this rhythm persists through glacial and interglacial periods. It has been suggested that the periodicity is driven by solar cycles, though solar cycles longer than 200 years are not well-documented. Here this periodicity is investigated in the context of a 1542-year recurring series of conjunctions of Saturn, Uranus and Neptune. Correlations with solar irradiance, galactic cosmic ray flux, and global temperatures suggest that these conjunctions may drive a regular periodicity in climate regimes that are inherently unstable, but only punctuate stable climate regimes that are following longer orbital periodicities. Keywords: Holocene, barycenter, BP (before present), IRD (ice rafted debris), THC (thermohaline circulation), solar irradiance, GCR (galactic cosmic ray) flux, TSI (total solar irradiance), proxy data, cosmogenic isotopes 10 Be and 14 C,

A ~1500-year periodicity has been reported in paleoclimate proxy data and claims have been made that this rhythm persists through glacial and interglacial periods. It has been suggested that the periodicity is driven by solar cycles, though solar cycles longer than 200 years are not well-documented. Here this periodicity is investigated in the context of a 1542-year recurring series of conjunctions of Saturn, Uranus and Neptune. Correlations with solar irradiance, galactic cosmic ray flux, and global temperatures suggest that these conjunctions may drive a regular periodicity in climate regimes that are inherently unstable, but only punctuate stable climate regimes that are following longer orbital periodicities. Keywords: Holocene, barycenter, BP (before present), IRD (ice rafted debris), THC (thermohaline circulation), solar irradiance, GCR (galactic cosmic ray) flux, TSI (total solar irradiance), proxy data, cosmogenic isotopes 10 Be and 14 C,

https://doi.org/10.1515/janeh-2020-0009
This paper addresses developments in the prediction of weather phenomena in Late Babylonian scholarly texts. Previously published and unpublished texts are analyzed and the underlying methods are compared with omen-based weather prognostication, developments in Babylonian astronomical prediction and reporting practices in the astronomical diaries. It is found that some texts combine long-term astronomical prediction with inferential methods for predicting weather phenomena. It is argued that these new methods for predicting weather phenomena are part of a larger Babylonian effort to predict and explain non-astronomical phenomena by relating them to predictable astronomical phenomena.

Here an attempt is made to find positive numbers a,b and c such that a^n+b^n=c^n. Two cases were considered. a^n+b^n is not divisible by (a+b)^2 and a^n+b^n is divisible by (a+b)^2. From this a solution for the case n=3 is obtained as (9+5)3 + (9^3-sqrt(5))^3 = 12^3. A condition for finding such numbers for any n is also reached using elementary number theory in 3 pages.